From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030265AbcDLPtT (ORCPT ); Tue, 12 Apr 2016 11:49:19 -0400 Received: from e18.ny.us.ibm.com ([129.33.205.208]:59759 "EHLO e18.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965752AbcDLPnn (ORCPT ); Tue, 12 Apr 2016 11:43:43 -0400 X-IBM-Helo: d01dlp02.pok.ibm.com X-IBM-MailFrom: paulmck@linux.vnet.ibm.com X-IBM-RcptTo: linux-kernel@vger.kernel.org From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com, bobby.prani@gmail.com, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 08/24] rcutorture: Print measure of batching efficiency Date: Tue, 12 Apr 2016 08:43:41 -0700 Message-Id: <1460475837-26498-8-git-send-email-paulmck@linux.vnet.ibm.com> X-Mailer: git-send-email 2.5.2 In-Reply-To: <20160412154332.GA24983@linux.vnet.ibm.com> References: <20160412154332.GA24983@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16041215-0045-0000-0000-000003E46405 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This commit adds a line giving the number of grace periods, the number of batches, and the ratio. The larger the ratio, the greater the batching efficiency. Signed-off-by: Paul E. McKenney --- .../rcutorture/bin/kvm-recheck-rcuperf.sh | 26 +++++++++++++--------- 1 file changed, 16 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh index e5b28174fda0..1f72df8eedc7 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh @@ -34,33 +34,38 @@ fi configfile=`echo $i | sed -e 's/^.*\///'` -grep -e '-perf:.*writer-duration' $i/console.log | sed -e 's/^\[[^]]*]//' | +sed -e 's/^\[[^]]*]//' < $i/console.log | awk ' -{ +/-perf: .* gps: .* batches:/ { + ngps = $9; + nbatches = $11; +} + +/-perf: .*writer-duration/ { gptimes[++n] = $5 / 1000.; sum += $5 / 1000.; } END { - if (NR <= 0) { + newNR = asort(gptimes); + if (newNR <= 0) { print "No rcuperf records found???" exit; } - asort(gptimes); - pct50 = int(NR * 50 / 100); + pct50 = int(newNR * 50 / 100); if (pct50 < 1) pct50 = 1; - pct90 = int(NR * 90 / 100); + pct90 = int(newNR * 90 / 100); if (pct90 < 1) pct90 = 1; - pct99 = int(NR * 99 / 100); + pct99 = int(newNR * 99 / 100); if (pct99 < 1) pct99 = 1; div = 10 ** int(log(gptimes[pct90]) / log(10) + .5) / 100; print "Histogram bucket size: " div; last = gptimes[1] - 10; count = 0; - for (i = 1; i <= NR; i++) { + for (i = 1; i <= newNR; i++) { current = div * int(gptimes[i] / div); if (last == current) { count++; @@ -73,10 +78,11 @@ END { } if (count > 0) print last, count; - print "Average grace-period duration: " sum / NR " microseconds"; + print "Average grace-period duration: " sum / newNR " microseconds"; print "Minimum grace-period duration: " gptimes[1]; print "50th percentile grace-period duration: " gptimes[pct50]; print "90th percentile grace-period duration: " gptimes[pct90]; print "99th percentile grace-period duration: " gptimes[pct99]; - print "Maximum grace-period duration: " gptimes[NR]; + print "Maximum grace-period duration: " gptimes[newNR]; + print "Grace periods: " ngps + 0 " Batches: " nbatches + 0 " Ratio: " ngps / nbatches; }' -- 2.5.2