mirror of
https://github.com/MariaDB/server.git
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5357110556
In commit f5ca4077, an the "--log" option was added but it was implemented by
invoking a sub-shell. Any errors in the sub-shell would not be propagated and
thus cause mini-benchmark to suppress errors.
The fix here is to propagate the exit status of the sub-shell.
All new code of the whole pull request, including one or several files that are
either new files or modified ones, are contributed under the BSD-new license. I
am contributing on behalf of my employer Amazon Web Services, Inc.
313 lines
9.4 KiB
Bash
Executable file
313 lines
9.4 KiB
Bash
Executable file
#!/bin/bash
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# Abort on errors
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set -ex
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display_help() {
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echo "Usage: $(basename "$0") [-h] [--perf] [--perf-flamegraph]"
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echo
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echo "This is a very small and naive benchmark script designed to be suitable"
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echo "for running in a CI system on every commit to detect severe performance"
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echo "regressions."
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echo
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echo "optional arguments:"
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echo " --name STRING identifier for the benchmark, added to the "
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echo " folder name and (if --log is set) the log file "
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echo " --threads \"STRING\" quoted string of space-separated integers "
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echo " representing the threads to run."
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echo " example: --threads \"1 32 64 128\""
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echo " default: \"1 2 4 8 16\""
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echo " --duration INTEGER duration of each thread run in seconds"
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echo " default: 60"
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echo " --workload STRING sysbench workload to execute"
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echo " default: oltp_read_write"
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echo " --log logs the mini-benchmark stdout/stderr into the"
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echo " benchmark folder."
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echo " --perf measure CPU cycles and instruction count in for "
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echo " sysbench runs"
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echo " --perf-flamegraph record performance counters in perf.data.* and"
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echo " generate flamegraphs automatically"
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echo " --cpu-limit upper limit on the number of CPU cycles (in billions) used for the benchmark"
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echo " default: 750"
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echo " -h, --help display this help and exit"
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}
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# Default parameters
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BENCHMARK_NAME='mini-benchmark'
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THREADS='1 2 4 8 16'
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DURATION=60
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WORKLOAD='oltp_read_write'
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while :
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do
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case "$1" in
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-h | --help)
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display_help
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exit 0
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;;
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--version)
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display_version
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exit 0
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;;
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--name)
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shift
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BENCHMARK_NAME+='-'
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BENCHMARK_NAME+=$1
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shift
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;;
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--threads)
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shift
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THREADS=$1
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shift
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;;
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--duration)
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shift
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DURATION=$1
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shift
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;;
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--workload)
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shift
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WORKLOAD=$1
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shift
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;;
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--log)
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LOG=true
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shift
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;;
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--perf)
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PERF=true
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shift
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;;
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--perf-flamegraph)
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PERF_RECORD=true
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shift
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;;
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--cpu-limit)
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shift
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CPU_CYCLE_LIMIT=$1
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shift
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;;
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-*)
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echo "Error: Unknown option: $1" >&2
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## or call function display_help
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exit 1
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;;
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*) # No more options
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break
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;;
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esac
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done
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# Save results of this run in a subdirectory so that they are not overwritten by
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# the next run
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TIMESTAMP="$(date -Iseconds)"
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mkdir "$BENCHMARK_NAME-$TIMESTAMP"
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cd "$BENCHMARK_NAME-$TIMESTAMP" || exit 1
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(
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# Check that the dependencies of this script are available
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if [ ! -e /usr/bin/pgrep ]
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then
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echo "ERROR: Command 'pgrep' missing, please install package 'psproc'"
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exit 1
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fi
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if [ ! -e /usr/bin/sysbench ]
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then
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echo "ERROR: Command 'sysbench' missing, please install package 'sysbench'"
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exit 1
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fi
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# If there are multiple processes, assume the last one is the actual server and
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# any potential other ones were just part of the service wrapper chain
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# shellcheck disable=SC2005
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MARIADB_SERVER_PID="$(echo "$(pgrep -f mariadbd || pgrep -f mysqld)" | tail -n 1)"
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if [ -z "$MARIADB_SERVER_PID" ]
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then
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echo "ERROR: Server 'mariadbd' or 'mysqld' is not running, please start the service"
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exit 1
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fi
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if [ "$PERF" == true ] && [ "$PERF_RECORD" == true ]
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then
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echo "ERROR: Cannot select both --perf and --perf-flamegraph options simultaneously. Please choose one or the other."
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exit 1
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fi
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if [ "$PERF" == true ] || [ "$PERF_RECORD" == true ]
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then
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if [ ! -e /usr/bin/perf ]
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then
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echo "ERROR: Command 'perf' missing, please install package 'perf'"
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exit 1
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fi
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fi
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if [ "$PERF_RECORD" == true ]
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then
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if [ ! -e /usr/bin/flamegraph.pl ]
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then
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echo "ERROR: Command 'flamegraph.pl' missing, please install package 'flamegraph'"
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exit 1
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fi
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if [ ! -e /usr/bin/stackcollapse-perf.pl ]
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then
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echo "ERROR: Command 'stackcollapse-perf.pl' missing, please install package 'flamegraph-stackcollapse-perf'"
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exit 1
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fi
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if [ ! -e /usr/bin/debuginfo-install ]
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then
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echo "ERROR: Command 'debuginfo-install' missing, please install package 'dnf-utils'"
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exit 1
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fi
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echo "Ensure the MariaDB Server debug symbols are installed"
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for x in $(ldd /usr/sbin/mariadbd | grep -oE " /.* ")
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do
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rpm -q --whatprovides --qf '%{name}' "$x" | cut -d : -f 1
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done | sort -u > mariadbd-dependencies.txt
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# shellcheck disable=SC2046
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debuginfo-install -y mariadb-server $(cat mariadbd-dependencies.txt)
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if ! (perf record echo "testing perf") > /dev/null 2>&1
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then
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echo "perf does not have permission to run on this system. Skipping."
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PERF_COMMAND=""
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else
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echo "Using 'perf' to record performance counters in perf.data files"
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PERF_COMMAND="perf record -g --freq=99 --output=perf.data --timestamp-filename --pid=$MARIADB_SERVER_PID --"
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fi
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elif [ "$PERF" == true ]
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then
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# If flamegraphs were not requested, log normal perf counters if possible
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if ! (perf stat echo "testing perf") > /dev/null 2>&1
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then
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echo "perf does not have permission to run on this system. Skipping."
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PERF_COMMAND=""
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else
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echo "Using 'perf' to log basic performance counters for benchmark"
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PERF_COMMAND="perf stat -p $MARIADB_SERVER_PID --"
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fi
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fi
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# Run sysbench on another CPU if system has more than one available
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if [ "$(nproc)" -gt 1 ]
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then
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TASKSET_SYSBENCH='taskset -c 1'
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else
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TASKSET_SYSBENCH=''
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fi
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echo "System hardware information:"
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lscpu
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free -m
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df -h .
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uname -a
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echo
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echo "Set highest priority for MariaDB Server process ID $MARIADB_SERVER_PID"
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renice --priority -20 --pid "$MARIADB_SERVER_PID" || echo "renice failed. Not setting priority."
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echo "Set CPU affinity 0 for MariaDB Server process ID $MARIADB_SERVER_PID"
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taskset -cp 0 "$MARIADB_SERVER_PID" || echo "taskset failed. Not setting cpu affinity."
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mariadb -e "
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CREATE DATABASE IF NOT EXISTS sbtest;
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CREATE USER IF NOT EXISTS sbtest@localhost;
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GRANT ALL PRIVILEGES ON sbtest.* TO sbtest@localhost"
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sysbench "$WORKLOAD" prepare --tables=20 --table-size=100000 | tee sysbench-prepare.log
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sync && sleep 1 # Ensure writes were propagated to disk
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# Run benchmark with increasing thread counts. The MariaDB Server will be using
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# around 300 MB of RAM and mostly reading and writing in RAM, so I/O usage is
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# also low. The benchmark will most likely be CPU bound to due to the load
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# profile, and also guaranteed to be CPU bound because of being limited to a
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# single CPU with 'tasksel'.
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for t in $THREADS
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do
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# Prepend command with perf if defined
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# Output stderr to stdout as perf outputs everything in stderr
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# shellcheck disable=SC2086
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$PERF_COMMAND $TASKSET_SYSBENCH sysbench "$WORKLOAD" run --threads=$t --time=$DURATION --report-interval=10 2>&1 | tee sysbench-run-$t.log
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done
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sysbench "$WORKLOAD" cleanup --tables=20 | tee sysbench-cleanup.log
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# Store results from 4 thread run in a Gitlab-CI compatible metrics file
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grep -oE '[a-z]+:[ ]+[0-9.]+' sysbench-run-4.log | sed -r 's/\s+/ /g' | tail -n 15 > metrics.txt
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echo # Newline improves readability
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echo "== SUMMARY =="
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# Print performance counter summary if they were logged
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if grep --quiet cycles sysbench-run-*.log
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then
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grep -e cycles sysbench-run-*.log | sort -k 2
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echo "Total: $(grep -h -e cycles sysbench-run-*.log | sort -k 1 | awk '{s+=$1}END{print s}')"
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echo # Newline improves readability
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grep -e instructions sysbench-run-*.log | sort -k 2
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echo "Total: $(grep -h -e instructions sysbench-run-*.log | sort -k 1 | awk '{s+=$1}END{print s}')"
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echo # Newline improves readability
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if [ -z "$CPU_CYCLE_LIMIT" ]
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then
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# 04-04-2024: We found this to be an appropriate default limit after running a few benchmarks
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# Configure the limit with --cpu-limit if needed
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CPU_CYCLE_LIMIT=750
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fi
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CPU_CYCLE_LIMIT_LONG="${CPU_CYCLE_LIMIT}000000000"
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# Final verdict based on cpu cycle count
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RESULT="$(grep -h -e cycles sysbench-run-*.log | sort -k 1 | awk '{s+=$1}END{print s}')"
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if [ "$RESULT" -gt "$CPU_CYCLE_LIMIT_LONG" ]
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then
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echo # Newline improves readability
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echo "Benchmark exceeded the allowed limit of ${CPU_CYCLE_LIMIT} billion CPU cycles"
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echo "Performance most likely regressed!"
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exit 1
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fi
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fi
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# List all sysbench status lines at once
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grep -h thds sysbench-run-*.log | sort -k 5 -h
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echo # Newline improves readability
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echo "Highest count for queries per second:"
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sort -k 9 -h sysbench-run-*.log | tail -n 1
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if [ "$PERF_RECORD" == true ]
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then
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for f in perf.data.*
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do
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perf script -i "$f" | stackcollapse-perf.pl | flamegraph.pl --width 1800 > "$f".svg
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done
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echo "Flamegraphs stored in folder $BENCHMARK_NAME-$TIMESTAMP/"
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fi
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# Fallback if CPU cycle count not available: final verdict based on peak QPS
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RESULT="$(sort -k 9 -h sysbench-run-*.log | tail -n 1 | grep -oE "qps: [0-9]+" | grep -oE "[0-9]+")"
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case $RESULT in
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''|*[!0-9]*)
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echo "ERROR: Benchmark result invalid, not an integer."
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exit 1
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;;
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*)
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if [ "$RESULT" -lt 13000 ]
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then
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echo # Newline improves readability
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echo "Benchmark did not reach 13000+ qps, performance most likely regressed!"
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exit 1
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else
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echo "Banchmark passed with $RESULT queries per second as peak value"
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fi
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;;
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esac
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# Record the output into the log file, if requested
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) 2>&1 | ($LOG && tee "$BENCHMARK_NAME"-"$TIMESTAMP".log)
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exit ${PIPESTATUS[0]} # Propagate errors in the sub-shell
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