Message-Id: <20180125062855.GZ3741@linux.vnet.ibm.com>
Date:   Wed, 24 Jan 2018 22:28:55 -0800
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     lianglihao@...wei.com
Cc:     guohanjun@...wei.com, heng.z@...wei.com, hb.chen@...wei.com,
        lihao.liang@...il.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC 15/16] rcutorture: Add scripts to run experiments

On Tue, Jan 23, 2018 at 03:59:40PM +0800, lianglihao@...wei.com wrote:
> From: Lihao Liang <lianglihao@...wei.com>
> 
> Signed-off-by: Lihao Liang <lianglihao@...wei.com>
> ---
>  kvm.sh         | 452 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  run-rcuperf.sh |  26 ++++

The usual approach would be to add what you need to the existing kvm.sh...

								Thanx, Paul

>  2 files changed, 478 insertions(+)
>  create mode 100755 kvm.sh
>  create mode 100755 run-rcuperf.sh
> 
> diff --git a/kvm.sh b/kvm.sh
> new file mode 100755
> index 00000000..3b3c1b69
> --- /dev/null
> +++ b/kvm.sh
> @@ -0,0 +1,452 @@
> +#!/bin/bash
> +#
> +# Run a series of 14 tests under KVM.  These are not particularly
> +# well-selected or well-tuned, but are the current set.  Run from the
> +# top level of the source tree.
> +#
> +# Edit the definitions below to set the locations of the various directories,
> +# as well as the test duration.
> +#
> +# Usage: kvm.sh [ options ]
> +#
> +# This program is free software; you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation; either version 2 of the License, or
> +# (at your option) any later version.
> +#
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, you can access it online at
> +# http://www.gnu.org/licenses/gpl-2.0.html.
> +#
> +# Copyright (C) IBM Corporation, 2011
> +#
> +# Authors: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> +
> +scriptname=$0
> +args="$*"
> +
> +T=/tmp/kvm.sh.$$
> +trap 'rm -rf $T' 0
> +mkdir $T
> +
> +dur=$((30*60))
> +dryrun=""
> +KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
> +PATH=${KVM}/bin:$PATH; export PATH
> +TORTURE_DEFCONFIG=defconfig
> +TORTURE_BOOT_IMAGE=""
> +TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD
> +TORTURE_KMAKE_ARG=""
> +TORTURE_SHUTDOWN_GRACE=180
> +TORTURE_SUITE=rcu
> +resdir=""
> +configs=""
> +cpus=0
> +ds=`date +%Y.%m.%d-%H:%M:%S`
> +jitter="-1"
> +
> +. functions.sh
> +
> +usage () {
> +	echo "Usage: $scriptname optional arguments:"
> +	echo "       --bootargs kernel-boot-arguments"
> +	echo "       --bootimage relative-path-to-kernel-boot-image"
> +	echo "       --buildonly"
> +	echo "       --configs \"config-file list w/ repeat factor (3*TINY01)\""
> +	echo "       --cpus N"
> +	echo "       --datestamp string"
> +	echo "       --defconfig string"
> +	echo "       --dryrun sched|script"
> +	echo "       --duration minutes"
> +	echo "       --interactive"
> +	echo "       --jitter N [ maxsleep (us) [ maxspin (us) ] ]"
> +	echo "       --kmake-arg kernel-make-arguments"
> +	echo "       --mac nn:nn:nn:nn:nn:nn"
> +	echo "       --no-initrd"
> +	echo "       --qemu-args qemu-system-..."
> +	echo "       --qemu-cmd qemu-system-..."
> +	echo "       --results absolute-pathname"
> +	echo "       --torture rcu"
> +	exit 1
> +}
> +
> +while test $# -gt 0
> +do
> +	case "$1" in
> +	--bootargs|--bootarg)
> +		checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
> +		TORTURE_BOOTARGS="$2"
> +		shift
> +		;;
> +	--bootimage)
> +		checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
> +		TORTURE_BOOT_IMAGE="$2"
> +		shift
> +		;;
> +	--buildonly)
> +		TORTURE_BUILDONLY=1
> +		;;
> +	--configs|--config)
> +		checkarg --configs "(list of config files)" "$#" "$2" '^[^/]*$' '^--'
> +		configs="$2"
> +		shift
> +		;;
> +	--cpus)
> +		checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
> +		cpus=$2
> +		shift
> +		;;
> +	--datestamp)
> +		checkarg --datestamp "(relative pathname)" "$#" "$2" '^[^/]*$' '^--'
> +		ds=$2
> +		shift
> +		;;
> +	--defconfig)
> +		checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
> +		TORTURE_DEFCONFIG=$2
> +		shift
> +		;;
> +	--dryrun)
> +		checkarg --dryrun "sched|script" $# "$2" 'sched\|script' '^--'
> +		dryrun=$2
> +		shift
> +		;;
> +	--duration)
> +		checkarg --duration "(minutes)" $# "$2" '^[0-9]*$' '^error'
> +		dur=$(($2*60))
> +		shift
> +		;;
> +	--interactive)
> +		TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
> +		;;
> +	--jitter)
> +		checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$' '^error$'
> +		jitter="$2"
> +		shift
> +		;;
> +	--kmake-arg)
> +		checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
> +		TORTURE_KMAKE_ARG="$2"
> +		shift
> +		;;
> +	--mac)
> +		checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
> +		TORTURE_QEMU_MAC=$2
> +		shift
> +		;;
> +	--no-initrd)
> +		TORTURE_INITRD=""; export TORTURE_INITRD
> +		;;
> +	--qemu-args|--qemu-arg)
> +		checkarg --qemu-args "-qemu args" $# "$2" '^-' '^error'
> +		TORTURE_QEMU_ARG="$2"
> +		shift
> +		;;
> +	--qemu-cmd)
> +		checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
> +		TORTURE_QEMU_CMD="$2"
> +		shift
> +		;;
> +	--results)
> +		checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
> +		resdir=$2
> +		shift
> +		;;
> +	--shutdown-grace)
> +		checkarg --shutdown-grace "(seconds)" "$#" "$2" '^[0-9]*$' '^error'
> +		TORTURE_SHUTDOWN_GRACE=$2
> +		shift
> +		;;
> +	--torture)
> +		checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuperf\)$' '^--'
> +		TORTURE_SUITE=$2
> +		shift
> +		;;
> +	*)
> +		echo Unknown argument $1
> +		usage
> +		;;
> +	esac
> +	shift
> +done
> +
> +CONFIGFRAG=${KVM}/configs/${TORTURE_SUITE}; export CONFIGFRAG
> +
> +if test -z "$configs"
> +then
> +	configs="`cat $CONFIGFRAG/CFLIST`"
> +fi
> +
> +if test -z "$resdir"
> +then
> +	resdir=$KVM/res
> +fi
> +
> +# Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
> +touch $T/cfgcpu
> +for CF in $configs
> +do
> +	case $CF in
> +	[0-9]\**|[0-9][0-9]\**|[0-9][0-9][0-9]\**)
> +		config_reps=`echo $CF | sed -e 's/\*.*$//'`
> +		CF1=`echo $CF | sed -e 's/^[^*]*\*//'`
> +		;;
> +	*)
> +		config_reps=1
> +		CF1=$CF
> +		;;
> +	esac
> +	if test -f "$CONFIGFRAG/$CF1"
> +	then
> +		cpu_count=`configNR_CPUS.sh $CONFIGFRAG/$CF1`
> +		cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
> +		for ((cur_rep=0;cur_rep<$config_reps;cur_rep++))
> +		do
> +			echo $CF1 $cpu_count >> $T/cfgcpu
> +		done
> +	else
> +		echo "The --configs file $CF1 does not exist, terminating."
> +		exit 1
> +	fi
> +done
> +sort -k2nr $T/cfgcpu > $T/cfgcpu.sort
> +
> +# Use a greedy bin-packing algorithm, sorting the list accordingly.
> +awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
> +BEGIN {
> +	njobs = 0;
> +}
> +
> +{
> +	# Read file of tests and corresponding required numbers of CPUs.
> +	cf[njobs] = $1;
> +	cpus[njobs] = $2;
> +	njobs++;
> +}
> +
> +END {
> +	alldone = 0;
> +	batch = 0;
> +	nc = -1;
> +
> +	# Each pass through the following loop creates on test batch
> +	# that can be executed concurrently given ncpus.  Note that a
> +	# given test that requires more than the available CPUs will run in
> +	# their own batch.  Such tests just have to make do with what
> +	# is available.
> +	while (nc != ncpus) {
> +		batch++;
> +		nc = ncpus;
> +
> +		# Each pass through the following loop considers one
> +		# test for inclusion in the current batch.
> +		for (i = 0; i < njobs; i++) {
> +			if (done[i])
> +				continue; # Already part of a batch.
> +			if (nc >= cpus[i] || nc == ncpus) {
> +
> +				# This test fits into the current batch.
> +				done[i] = batch;
> +				nc -= cpus[i];
> +				if (nc <= 0)
> +					break; # Too-big test in its own batch.
> +			}
> +		}
> +	}
> +
> +	# Dump out the tests in batch order.
> +	for (b = 1; b <= batch; b++)
> +		for (i = 0; i < njobs; i++)
> +			if (done[i] == b)
> +				print cf[i], cpus[i];
> +}'
> +
> +# Generate a script to execute the tests in appropriate batches.
> +cat << ___EOF___ > $T/script
> +CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
> +KVM="$KVM"; export KVM
> +PATH="$PATH"; export PATH
> +TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
> +TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
> +TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
> +TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
> +TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
> +TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
> +TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
> +TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
> +TORTURE_SHUTDOWN_GRACE="$TORTURE_SHUTDOWN_GRACE"; export TORTURE_SHUTDOWN_GRACE
> +TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
> +if ! test -e $resdir
> +then
> +	mkdir -p "$resdir" || :
> +fi
> +mkdir $resdir/$ds
> +echo Results directory: $resdir/$ds
> +echo $scriptname $args
> +touch $resdir/$ds/log
> +echo $scriptname $args >> $resdir/$ds/log
> +echo ${TORTURE_SUITE} > $resdir/$ds/TORTURE_SUITE
> +pwd > $resdir/$ds/testid.txt
> +if test -d .git
> +then
> +	git status >> $resdir/$ds/testid.txt
> +	git rev-parse HEAD >> $resdir/$ds/testid.txt
> +	if ! git diff HEAD > $T/git-diff 2>&1
> +	then
> +		cp $T/git-diff $resdir/$ds
> +	fi
> +fi
> +___EOF___
> +awk < $T/cfgcpu.pack \
> +	-v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \
> +	-v CONFIGDIR="$CONFIGFRAG/" \
> +	-v KVM="$KVM" \
> +	-v ncpus=$cpus \
> +	-v jitter="$jitter" \
> +	-v rd=$resdir/$ds/ \
> +	-v dur=$dur \
> +	-v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
> +	-v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
> +'BEGIN {
> +	i = 0;
> +}
> +
> +{
> +	cf[i] = $1;
> +	cpus[i] = $2;
> +	i++;
> +}
> +
> +# Dump out the scripting required to run one test batch.
> +function dump(first, pastlast, batchnum)
> +{
> +	print "echo ----Start batch " batchnum ": `date`";
> +	print "echo ----Start batch " batchnum ": `date` >> " rd "/log";
> +	jn=1
> +	for (j = first; j < pastlast; j++) {
> +		builddir=KVM "/b" jn
> +		cpusr[jn] = cpus[j];
> +		if (cfrep[cf[j]] == "") {
> +			cfr[jn] = cf[j];
> +			cfrep[cf[j]] = 1;
> +		} else {
> +			cfrep[cf[j]]++;
> +			cfr[jn] = cf[j] "." cfrep[cf[j]];
> +		}
> +		if (cpusr[jn] > ncpus && ncpus != 0)
> +			ovf = "-ovf";
> +		else
> +			ovf = "";
> +		print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date`";
> +		print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` >> " rd "/log";
> +		print "rm -f " builddir ".*";
> +		print "touch " builddir ".wait";
> +		print "mkdir " builddir " > /dev/null 2>&1 || :";
> +		print "mkdir " rd cfr[jn] " || :";
> +		print "kvm-test-1-run.sh " CONFIGDIR cf[j], builddir, rd cfr[jn], dur " \"" TORTURE_QEMU_ARG "\" \"" TORTURE_BOOTARGS "\" > " rd cfr[jn]  "/kvm-test-1-run.sh.out 2>&1 &"
> +		print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date`";
> +		print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` >> " rd "/log";
> +		print "while test -f " builddir ".wait"
> +		print "do"
> +		print "\tsleep 1"
> +		print "done"
> +		print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date`";
> +		print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` >> " rd "/log";
> +		jn++;
> +	}
> +	for (j = 1; j < jn; j++) {
> +		builddir=KVM "/b" j
> +		print "rm -f " builddir ".ready"
> +		print "if test -z \"$TORTURE_BUILDONLY\""
> +		print "then"
> +		print "\techo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date`";
> +		print "\techo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date` >> " rd "/log";
> +		print "fi"
> +	}
> +	njitter = 0;
> +	split(jitter, ja);
> +	if (ja[1] == -1 && ncpus == 0)
> +		njitter = 1;
> +	else if (ja[1] == -1)
> +		njitter = ncpus;
> +	else
> +		njitter = ja[1];
> +	if (TORTURE_BUILDONLY && njitter != 0) {
> +		njitter = 0;
> +		print "echo Build-only run, so suppressing jitter >> " rd "/log"
> +	}
> +	for (j = 0; j < njitter; j++)
> +		print "jitter.sh " j " " dur " " ja[2] " " ja[3] "&"
> +	print "wait"
> +	print "if test -z \"$TORTURE_BUILDONLY\""
> +	print "then"
> +	print "\techo ---- All kernel runs complete. `date`";
> +	print "\techo ---- All kernel runs complete. `date` >> " rd "/log";
> +	print "fi"
> +	for (j = 1; j < jn; j++) {
> +		builddir=KVM "/b" j
> +		print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results:";
> +		print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: >> " rd "/log";
> +		print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out";
> +		print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out >> " rd "/log";
> +	}
> +}
> +
> +END {
> +	njobs = i;
> +	nc = ncpus;
> +	first = 0;
> +	batchnum = 1;
> +
> +	# Each pass through the following loop considers one test.
> +	for (i = 0; i < njobs; i++) {
> +		if (ncpus == 0) {
> +			# Sequential test specified, each test its own batch.
> +			dump(i, i + 1, batchnum);
> +			first = i;
> +			batchnum++;
> +		} else if (nc < cpus[i] && i != 0) {
> +			# Out of CPUs, dump out a batch.
> +			dump(first, i, batchnum);
> +			first = i;
> +			nc = ncpus;
> +			batchnum++;
> +		}
> +		# Account for the CPUs needed by the current test.
> +		nc -= cpus[i];
> +	}
> +	# Dump the last batch.
> +	if (ncpus != 0)
> +		dump(first, i, batchnum);
> +}' >> $T/script
> +
> +cat << ___EOF___ >> $T/script
> +echo
> +echo
> +echo " --- `date` Test summary:"
> +echo Results directory: $resdir/$ds
> +kvm-recheck.sh $resdir/$ds
> +___EOF___
> +
> +if test "$dryrun" = script
> +then
> +	cat $T/script
> +	exit 0
> +elif test "$dryrun" = sched
> +then
> +	# Extract the test run schedule from the script.
> +	egrep 'Start batch|Starting build\.' $T/script |
> +		grep -v ">>" |
> +		sed -e 's/:.*$//' -e 's/^echo //'
> +	exit 0
> +else
> +	# Not a dryrun, so run the script.
> +	sh $T/script
> +fi
> +
> +# Tracing: trace_event=rcu:rcu_grace_period,rcu:rcu_future_grace_period,rcu:rcu_grace_period_init,rcu:rcu_nocb_wake,rcu:rcu_preempt_task,rcu:rcu_unlock_preempted_task,rcu:rcu_quiescent_state_report,rcu:rcu_fqs,rcu:rcu_callback,rcu:rcu_kfree_callback,rcu:rcu_batch_start,rcu:rcu_invoke_callback,rcu:rcu_invoke_kfree_callback,rcu:rcu_batch_end,rcu:rcu_torture_read,rcu:rcu_barrier
> diff --git a/run-rcuperf.sh b/run-rcuperf.sh
> new file mode 100755
> index 00000000..0526fff1
> --- /dev/null
> +++ b/run-rcuperf.sh
> @@ -0,0 +1,26 @@
> +#!/bin/bash
> +
> +dur=10
> +run=10
> +torture="rcuperf"
> +rest="1m"
> +path=`pwd`
> +
> +for cpu in 4 8 16
> +do
> +	for type in PRCU TREE
> +	do
> +		folder="$path/res/rcuperf/cpu-$cpu/$type"
> +		if ! test -d $folder
> +		then
> +			echo "$folder does not exist..."
> +			exit
> +		fi
> +
> +		echo "Running rcuperf-$type-${cpu}cpus..."
> +		`./kvm.sh --torture $torture --duration $dur --configs ${run}*${type}-${cpu} --results $folder &> $folder/$type-cpu${cpu}-${dur}min.out`
> +
> +		echo "Sleep $rest..."
> +		`sleep $rest`
> +	done
> +done
> -- 
> 2.14.1.729.g59c0ea183
> 

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