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add Hydra 👋
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‎hydra/README.md

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# Hydra
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Hydra is an open source data warehouse built on Postgres.
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* [Homepage](https://hydras.io)
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* [GitHub](https://github.com/HydrasDB/hydra)
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## Running the benchmark
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The benchmark has been configured for a `c6a.4xlarge` running Ubuntu 22.04 and can be run without attendance.
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```
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export HOST=ec2-127-0-0-1.compute-1.amazonaws.com
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scp -i ~/.ssh/aws.pem *.sh *.sql ubuntu@$HOST:~
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ssh -i ~/.ssh/aws.pem ubuntu@$HOST ./benchmark.sh
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```

‎hydra/benchmark.sh

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#!/bin/bash
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set -euo pipefail
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IFS=$'\n\t'
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# sets up PG14, configs, and build deps on ubuntu 22.04
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sudo ./install.sh
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# download hits.tsv if we dont already have it
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if [ ! -e hits.tsv ]; then
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wget --continue 'https://datasets.clickhouse.com/hits_compatible/hits.tsv.gz'
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gzip -d hits.tsv.gz
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fi
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# ensure postgres user can access hits.tsv
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chmod a+rX . hits.tsv
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# set up db, user, table; load data.
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sudo -u postgres psql -t -c 'CREATE DATABASE test'
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sudo -u postgres psql test -t < create.sql
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sudo -u postgres psql test -t -c 'TRUNCATE hits'
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sudo -u postgres psql test -t -c '\timing' -c "\\copy hits FROM 'hits.tsv'"
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# COPY 99997497
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# Time: 1320024.670 ms (22:00.025)
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# run test
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./run.sh 2>&1 | tee log.txt
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# disk usage
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sudo du -bcs /var/lib/postgresql/14/main/
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# 18979994590
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# parse results for json file
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./parse.sh < log.txt

‎hydra/create.sql

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CREATE EXTENSION IF NOT EXISTS columnar;
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CREATE TABLE IF NOT EXISTS hits
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(
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WatchID BIGINT NOT NULL,
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JavaEnable SMALLINT NOT NULL,
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Title TEXT NOT NULL,
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GoodEvent SMALLINT NOT NULL,
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EventTime TIMESTAMP NOT NULL,
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EventDate Date NOT NULL,
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CounterID INTEGER NOT NULL,
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ClientIP INTEGER NOT NULL,
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RegionID INTEGER NOT NULL,
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UserID BIGINT NOT NULL,
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CounterClass SMALLINT NOT NULL,
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OS SMALLINT NOT NULL,
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UserAgent SMALLINT NOT NULL,
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URL TEXT NOT NULL,
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Referer TEXT NOT NULL,
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IsRefresh SMALLINT NOT NULL,
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RefererCategoryID SMALLINT NOT NULL,
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RefererRegionID INTEGER NOT NULL,
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URLCategoryID SMALLINT NOT NULL,
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URLRegionID INTEGER NOT NULL,
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ResolutionWidth SMALLINT NOT NULL,
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ResolutionHeight SMALLINT NOT NULL,
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ResolutionDepth SMALLINT NOT NULL,
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FlashMajor SMALLINT NOT NULL,
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FlashMinor SMALLINT NOT NULL,
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FlashMinor2 TEXT NOT NULL,
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NetMajor SMALLINT NOT NULL,
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NetMinor SMALLINT NOT NULL,
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UserAgentMajor SMALLINT NOT NULL,
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UserAgentMinor VARCHAR(255) NOT NULL,
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CookieEnable SMALLINT NOT NULL,
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JavascriptEnable SMALLINT NOT NULL,
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IsMobile SMALLINT NOT NULL,
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MobilePhone SMALLINT NOT NULL,
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MobilePhoneModel TEXT NOT NULL,
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Params TEXT NOT NULL,
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IPNetworkID INTEGER NOT NULL,
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TraficSourceID SMALLINT NOT NULL,
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SearchEngineID SMALLINT NOT NULL,
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SearchPhrase TEXT NOT NULL,
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AdvEngineID SMALLINT NOT NULL,
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IsArtifical SMALLINT NOT NULL,
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WindowClientWidth SMALLINT NOT NULL,
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WindowClientHeight SMALLINT NOT NULL,
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ClientTimeZone SMALLINT NOT NULL,
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ClientEventTime TIMESTAMP NOT NULL,
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SilverlightVersion1 SMALLINT NOT NULL,
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SilverlightVersion2 SMALLINT NOT NULL,
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SilverlightVersion3 INTEGER NOT NULL,
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SilverlightVersion4 SMALLINT NOT NULL,
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PageCharset TEXT NOT NULL,
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CodeVersion INTEGER NOT NULL,
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IsLink SMALLINT NOT NULL,
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IsDownload SMALLINT NOT NULL,
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IsNotBounce SMALLINT NOT NULL,
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FUniqID BIGINT NOT NULL,
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OriginalURL TEXT NOT NULL,
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HID INTEGER NOT NULL,
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IsOldCounter SMALLINT NOT NULL,
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IsEvent SMALLINT NOT NULL,
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IsParameter SMALLINT NOT NULL,
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DontCountHits SMALLINT NOT NULL,
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WithHash SMALLINT NOT NULL,
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HitColor CHAR NOT NULL,
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LocalEventTime TIMESTAMP NOT NULL,
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Age SMALLINT NOT NULL,
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Sex SMALLINT NOT NULL,
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Income SMALLINT NOT NULL,
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Interests SMALLINT NOT NULL,
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Robotness SMALLINT NOT NULL,
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RemoteIP INTEGER NOT NULL,
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WindowName INTEGER NOT NULL,
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OpenerName INTEGER NOT NULL,
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HistoryLength SMALLINT NOT NULL,
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BrowserLanguage TEXT NOT NULL,
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BrowserCountry TEXT NOT NULL,
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SocialNetwork TEXT NOT NULL,
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SocialAction TEXT NOT NULL,
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HTTPError SMALLINT NOT NULL,
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SendTiming INTEGER NOT NULL,
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DNSTiming INTEGER NOT NULL,
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ConnectTiming INTEGER NOT NULL,
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ResponseStartTiming INTEGER NOT NULL,
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ResponseEndTiming INTEGER NOT NULL,
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FetchTiming INTEGER NOT NULL,
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SocialSourceNetworkID SMALLINT NOT NULL,
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SocialSourcePage TEXT NOT NULL,
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ParamPrice BIGINT NOT NULL,
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ParamOrderID TEXT NOT NULL,
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ParamCurrency TEXT NOT NULL,
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ParamCurrencyID SMALLINT NOT NULL,
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OpenstatServiceName TEXT NOT NULL,
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OpenstatCampaignID TEXT NOT NULL,
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OpenstatAdID TEXT NOT NULL,
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OpenstatSourceID TEXT NOT NULL,
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UTMSource TEXT NOT NULL,
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UTMMedium TEXT NOT NULL,
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UTMCampaign TEXT NOT NULL,
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UTMContent TEXT NOT NULL,
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UTMTerm TEXT NOT NULL,
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FromTag TEXT NOT NULL,
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HasGCLID SMALLINT NOT NULL,
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RefererHash BIGINT NOT NULL,
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URLHash BIGINT NOT NULL,
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CLID INTEGER NOT NULL,
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PRIMARY KEY (CounterID, EventDate, UserID, EventTime, WatchID)
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)
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USING columnar;

‎hydra/install.sh

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#!/bin/bash
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set -euo pipefail
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IFS=$'\n\t'
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config_file="/etc/postgresql/14/main/conf.d/hydra.conf"
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write_config_file() {
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# config for a c6a.4xlarge
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cat >${config_file} << CONF
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max_worker_processes = 32
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max_parallel_workers = 16
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work_mem = 64MB
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shared_buffers = 8GB
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effective_cache_size = 24GB
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effective_io_concurrency = 100
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hash_mem_multiplier = 8
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shared_preload_libraries = 'columnar'
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columnar.min_parallel_processes = 16
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CONF
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}
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if [ ! ${EUID} -eq 0 ]; then
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echo "Please run as root or with sudo"
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exit 1
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fi
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# already ran this setup file
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if [ -f "$config_file" ]; then
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# rewrite the file with any tweaks
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write_config_file
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service postgresql restart
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exit 0
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fi
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export DEBIAN_FRONTEND=noninteractive
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# install pg14 from pgdg, install build deps
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apt-get update
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apt-get install gnupg postgresql-common -y
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sh /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh -y
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apt-get update
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apt-get upgrade -y
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apt-get install lsb-release gcc make libssl-dev autoconf pkg-config \
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postgresql-14 postgresql-server-dev-14 libcurl4-gnutls-dev \
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liblz4-dev libzstd-dev -y
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# build and install hydra columnar extension
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if [ ! -d hydra ]; then
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git clone --depth 1 https://github.com/HydrasDB/hydra.git
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fi
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cd hydra/columnar
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./configure
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make
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make install
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cd ../..
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write_config_file
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service postgresql restart

‎hydra/parse.sh

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#!/bin/bash
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# OS X: you need to use the gnu tools from homebrew
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GREP="grep"
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if command -v ggrep >/dev/null 2>&1; then
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grep="ggrep"
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fi
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SED="sed"
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if command -v gsed >/dev/null 2>&1; then
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sed="gsed"
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fi
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$GREP -oP 'Time: \d+\.\d+ ms' | $SED -r -e 's/Time: ([0-9]+\.[0-9]+) ms/\1/' |
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awk '{ if (i % 3 == 0) { printf "[" }; printf $1 / 1000; if (i % 3 != 2) { printf "," } else { print "]," }; ++i; }'

‎hydra/queries.sql

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SELECT COUNT(*) FROM hits;
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SELECT COUNT(*) FROM hits WHERE AdvEngineID <> 0;
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SELECT SUM(AdvEngineID), COUNT(*), AVG(ResolutionWidth) FROM hits;
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SELECT AVG(UserID) FROM hits;
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SELECT COUNT(DISTINCT UserID) FROM hits;
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SELECT COUNT(DISTINCT SearchPhrase) FROM hits;
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SELECT MIN(EventDate), MAX(EventDate) FROM hits;
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SELECT AdvEngineID, COUNT(*) FROM hits WHERE AdvEngineID <> 0 GROUP BY AdvEngineID ORDER BY COUNT(*) DESC;
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SELECT RegionID, COUNT(DISTINCT UserID) AS u FROM hits GROUP BY RegionID ORDER BY u DESC LIMIT 10;
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SELECT RegionID, SUM(AdvEngineID), COUNT(*) AS c, AVG(ResolutionWidth), COUNT(DISTINCT UserID) FROM hits GROUP BY RegionID ORDER BY c DESC LIMIT 10;
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SELECT MobilePhoneModel, COUNT(DISTINCT UserID) AS u FROM hits WHERE MobilePhoneModel <> '' GROUP BY MobilePhoneModel ORDER BY u DESC LIMIT 10;
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SELECT MobilePhone, MobilePhoneModel, COUNT(DISTINCT UserID) AS u FROM hits WHERE MobilePhoneModel <> '' GROUP BY MobilePhone, MobilePhoneModel ORDER BY u DESC LIMIT 10;
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SELECT SearchPhrase, COUNT(*) AS c FROM hits WHERE SearchPhrase <> '' GROUP BY SearchPhrase ORDER BY c DESC LIMIT 10;
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SELECT SearchPhrase, COUNT(DISTINCT UserID) AS u FROM hits WHERE SearchPhrase <> '' GROUP BY SearchPhrase ORDER BY u DESC LIMIT 10;
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SELECT SearchEngineID, SearchPhrase, COUNT(*) AS c FROM hits WHERE SearchPhrase <> '' GROUP BY SearchEngineID, SearchPhrase ORDER BY c DESC LIMIT 10;
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SELECT UserID, COUNT(*) FROM hits GROUP BY UserID ORDER BY COUNT(*) DESC LIMIT 10;
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SELECT UserID, SearchPhrase, COUNT(*) FROM hits GROUP BY UserID, SearchPhrase ORDER BY COUNT(*) DESC LIMIT 10;
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SELECT UserID, SearchPhrase, COUNT(*) FROM hits GROUP BY UserID, SearchPhrase LIMIT 10;
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SELECT UserID, extract(minute FROM EventTime) AS m, SearchPhrase, COUNT(*) FROM hits GROUP BY UserID, m, SearchPhrase ORDER BY COUNT(*) DESC LIMIT 10;
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SELECT UserID FROM hits WHERE UserID = 435090932899640449;
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SELECT COUNT(*) FROM hits WHERE URL LIKE '%google%';
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SELECT SearchPhrase, MIN(URL), COUNT(*) AS c FROM hits WHERE URL LIKE '%google%' AND SearchPhrase <> '' GROUP BY SearchPhrase ORDER BY c DESC LIMIT 10;
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SELECT SearchPhrase, MIN(URL), MIN(Title), COUNT(*) AS c, COUNT(DISTINCT UserID) FROM hits WHERE Title LIKE '%Google%' AND URL NOT LIKE '%.google.%' AND SearchPhrase <> '' GROUP BY SearchPhrase ORDER BY c DESC LIMIT 10;
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SELECT * FROM hits WHERE URL LIKE '%google%' ORDER BY EventTime LIMIT 10;
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SELECT SearchPhrase FROM hits WHERE SearchPhrase <> '' ORDER BY EventTime LIMIT 10;
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SELECT SearchPhrase FROM hits WHERE SearchPhrase <> '' ORDER BY SearchPhrase LIMIT 10;
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SELECT SearchPhrase FROM hits WHERE SearchPhrase <> '' ORDER BY EventTime, SearchPhrase LIMIT 10;
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SELECT CounterID, AVG(length(URL)) AS l, COUNT(*) AS c FROM hits WHERE URL <> '' GROUP BY CounterID HAVING COUNT(*) > 100000 ORDER BY l DESC LIMIT 25;
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SELECT REGEXP_REPLACE(Referer, '^https?://(?:www\.)?([^/]+)/.*$', '\1') AS k, AVG(length(Referer)) AS l, COUNT(*) AS c, MIN(Referer) FROM hits WHERE Referer <> '' GROUP BY k HAVING COUNT(*) > 100000 ORDER BY l DESC LIMIT 25;
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SELECT SUM(ResolutionWidth), SUM(ResolutionWidth + 1), SUM(ResolutionWidth + 2), SUM(ResolutionWidth + 3), SUM(ResolutionWidth + 4), SUM(ResolutionWidth + 5), SUM(ResolutionWidth + 6), SUM(ResolutionWidth + 7), SUM(ResolutionWidth + 8), SUM(ResolutionWidth + 9), SUM(ResolutionWidth + 10), SUM(ResolutionWidth + 11), SUM(ResolutionWidth + 12), SUM(ResolutionWidth + 13), SUM(ResolutionWidth + 14), SUM(ResolutionWidth + 15), SUM(ResolutionWidth + 16), SUM(ResolutionWidth + 17), SUM(ResolutionWidth + 18), SUM(ResolutionWidth + 19), SUM(ResolutionWidth + 20), SUM(ResolutionWidth + 21), SUM(ResolutionWidth + 22), SUM(ResolutionWidth + 23), SUM(ResolutionWidth + 24), SUM(ResolutionWidth + 25), SUM(ResolutionWidth + 26), SUM(ResolutionWidth + 27), SUM(ResolutionWidth + 28), SUM(ResolutionWidth + 29), SUM(ResolutionWidth + 30), SUM(ResolutionWidth + 31), SUM(ResolutionWidth + 32), SUM(ResolutionWidth + 33), SUM(ResolutionWidth + 34), SUM(ResolutionWidth + 35), SUM(ResolutionWidth + 36), SUM(ResolutionWidth + 37), SUM(ResolutionWidth + 38), SUM(ResolutionWidth + 39), SUM(ResolutionWidth + 40), SUM(ResolutionWidth + 41), SUM(ResolutionWidth + 42), SUM(ResolutionWidth + 43), SUM(ResolutionWidth + 44), SUM(ResolutionWidth + 45), SUM(ResolutionWidth + 46), SUM(ResolutionWidth + 47), SUM(ResolutionWidth + 48), SUM(ResolutionWidth + 49), SUM(ResolutionWidth + 50), SUM(ResolutionWidth + 51), SUM(ResolutionWidth + 52), SUM(ResolutionWidth + 53), SUM(ResolutionWidth + 54), SUM(ResolutionWidth + 55), SUM(ResolutionWidth + 56), SUM(ResolutionWidth + 57), SUM(ResolutionWidth + 58), SUM(ResolutionWidth + 59), SUM(ResolutionWidth + 60), SUM(ResolutionWidth + 61), SUM(ResolutionWidth + 62), SUM(ResolutionWidth + 63), SUM(ResolutionWidth + 64), SUM(ResolutionWidth + 65), SUM(ResolutionWidth + 66), SUM(ResolutionWidth + 67), SUM(ResolutionWidth + 68), SUM(ResolutionWidth + 69), SUM(ResolutionWidth + 70), SUM(ResolutionWidth + 71), SUM(ResolutionWidth + 72), SUM(ResolutionWidth + 73), SUM(ResolutionWidth + 74), SUM(ResolutionWidth + 75), SUM(ResolutionWidth + 76), SUM(ResolutionWidth + 77), SUM(ResolutionWidth + 78), SUM(ResolutionWidth + 79), SUM(ResolutionWidth + 80), SUM(ResolutionWidth + 81), SUM(ResolutionWidth + 82), SUM(ResolutionWidth + 83), SUM(ResolutionWidth + 84), SUM(ResolutionWidth + 85), SUM(ResolutionWidth + 86), SUM(ResolutionWidth + 87), SUM(ResolutionWidth + 88), SUM(ResolutionWidth + 89) FROM hits;
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SELECT SearchEngineID, ClientIP, COUNT(*) AS c, SUM(IsRefresh), AVG(ResolutionWidth) FROM hits WHERE SearchPhrase <> '' GROUP BY SearchEngineID, ClientIP ORDER BY c DESC LIMIT 10;
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SELECT WatchID, ClientIP, COUNT(*) AS c, SUM(IsRefresh), AVG(ResolutionWidth) FROM hits WHERE SearchPhrase <> '' GROUP BY WatchID, ClientIP ORDER BY c DESC LIMIT 10;
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SELECT WatchID, ClientIP, COUNT(*) AS c, SUM(IsRefresh), AVG(ResolutionWidth) FROM hits GROUP BY WatchID, ClientIP ORDER BY c DESC LIMIT 10;
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SELECT URL, COUNT(*) AS c FROM hits GROUP BY URL ORDER BY c DESC LIMIT 10;
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SELECT 1, URL, COUNT(*) AS c FROM hits GROUP BY 1, URL ORDER BY c DESC LIMIT 10;
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SELECT ClientIP, ClientIP - 1, ClientIP - 2, ClientIP - 3, COUNT(*) AS c FROM hits GROUP BY ClientIP, ClientIP - 1, ClientIP - 2, ClientIP - 3 ORDER BY c DESC LIMIT 10;
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SELECT URL, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND DontCountHits = 0 AND IsRefresh = 0 AND URL <> '' GROUP BY URL ORDER BY PageViews DESC LIMIT 10;
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SELECT Title, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND DontCountHits = 0 AND IsRefresh = 0 AND Title <> '' GROUP BY Title ORDER BY PageViews DESC LIMIT 10;
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SELECT URL, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND IsRefresh = 0 AND IsLink <> 0 AND IsDownload = 0 GROUP BY URL ORDER BY PageViews DESC LIMIT 10 OFFSET 1000;
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SELECT TraficSourceID, SearchEngineID, AdvEngineID, CASE WHEN (SearchEngineID = 0 AND AdvEngineID = 0) THEN Referer ELSE '' END AS Src, URL AS Dst, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND IsRefresh = 0 GROUP BY TraficSourceID, SearchEngineID, AdvEngineID, Src, Dst ORDER BY PageViews DESC LIMIT 10 OFFSET 1000;
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SELECT URLHash, EventDate, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND IsRefresh = 0 AND TraficSourceID IN (-1, 6) AND RefererHash = 3594120000172545465 GROUP BY URLHash, EventDate ORDER BY PageViews DESC LIMIT 10 OFFSET 100;
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SELECT WindowClientWidth, WindowClientHeight, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND IsRefresh = 0 AND DontCountHits = 0 AND URLHash = 2868770270353813622 GROUP BY WindowClientWidth, WindowClientHeight ORDER BY PageViews DESC LIMIT 10 OFFSET 10000;
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SELECT DATE_TRUNC('minute', EventTime) AS M, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-14' AND EventDate <= '2013-07-15' AND IsRefresh = 0 AND DontCountHits = 0 GROUP BY DATE_TRUNC('minute', EventTime) ORDER BY DATE_TRUNC('minute', EventTime) LIMIT 10 OFFSET 1000;

‎hydra/results/c6a.4xlarge.json

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{
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"system": "Hydra",
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"date": "2022-12-09",
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"machine": "c6a.4xlarge, 500gb gp2",
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"cluster_size": 1,
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"comment": "",
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"tags": [
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"C",
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"PostgreSQL compatible",
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"column-oriented"
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],
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"load_time": 1320,
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"data_size": 18979994590,
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"result": [
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[0.740694,0.559759,0.554923],
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[0.301194,0.177796,0.177315],
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[1.02766,0.932874,0.93086],
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[0.822004,0.670304,0.669193],
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[22.1797,21.4226,21.1139],
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[36.6104,32.6343,33.2646],
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[0.86711,0.726068,0.717364],
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[0.197655,0.183667,0.179238],
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[27.4706,26.7764,26.5041],
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[27.5853,26.3914,26.6962],
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[3.35359,3.32823,2.5907],
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[2.94602,2.74354,2.62606],
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[6.87809,6.25172,6.33486],
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[12.325,10.0007,10.5973],
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[9.19494,8.12375,8.15671],
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[9.00219,9.03757,9.06412],
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[29.8696,30.932,29.5041],
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[4.37935,4.27177,4.22549],
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[39.0721,38.0603,38.0578],
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[0.136752,0.097382,0.094568],
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[5.25151,2.64213,2.63089],
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[2.83423,2.82903,2.83144],
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[4.15824,3.49945,3.47109],
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[29.7921,19.2574,19.4905],
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[1.95286,0.997379,0.994311],
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[1.02292,0.781007,0.775684],
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[1.23559,1.0049,0.99849],
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[4.3043,4.12738,4.12725],
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[46.2241,45.5508,45.5717],
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[8.13096,7.45358,7.50328],
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[10.1521,10.1498,9.63454],
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[19.2246,17.6757,17.6227],
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[144.626,145.754,147.718],
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[25.2833,25.5076,24.6359],
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[26.0226,28.9469,27.4574],
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[9.45768,8.53303,8.51915],
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[0.972488,0.863001,0.858721],
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[0.469013,0.488229,0.452213],
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[0.144778,0.118679,0.116987],
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[1.91039,1.81155,1.98042],
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[0.122169,0.116007,0.120359],
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[0.142668,0.124877,0.108149],
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[0.185689,0.17577,0.171818]
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]
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}

‎hydra/run.sh

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#!/bin/bash
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TRIES=3
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cat queries.sql | while read query; do
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sync
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echo 3 | sudo tee /proc/sys/vm/drop_caches
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echo "$query";
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for i in $(seq 1 $TRIES); do
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sudo -u postgres psql test -t -c '\timing' -c "$query" | grep 'Time'
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done;
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done;

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