Date: Tue, 29 Mar 2016 10:27:26 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r297380 - user/pho/stress2/misc Message-ID: <201603291027.u2TARQ5c061889@repo.freebsd.org>
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Author: pho Date: Tue Mar 29 10:27:25 2016 New Revision: 297380 URL: https://svnweb.freebsd.org/changeset/base/297380 Log: Trim MAXVNODES based on problem found. Limit tmpfs size. Sponsored by: EMC / Isilon Storage Division Modified: user/pho/stress2/misc/core5.sh Modified: user/pho/stress2/misc/core5.sh ============================================================================== --- user/pho/stress2/misc/core5.sh Tue Mar 29 10:25:01 2016 (r297379) +++ user/pho/stress2/misc/core5.sh Tue Mar 29 10:27:25 2016 (r297380) @@ -34,6 +34,10 @@ # http://people.freebsd.org/~pho/stress/log/core5.txt # Fixed by r279237. +# 20150714 Slowdown seen with core5 waiting in vlruwk. +# sysctl vfs.vlru_allow_cache_src=1 resolves this. +# For now change MAXVNODES from 1.000 to 1.500. + [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 . ../default.cfg @@ -102,12 +106,12 @@ cd $mntpoint mp2=${mntpoint}2 [ -d $mp2 ] || mkdir $mp2 mount | grep -q "on $mp2 " && umount $mp2 -mount -t tmpfs tmpfs $mp2 || exit 1 +mount -o size=2g -t tmpfs tmpfs $mp2 || exit 1 for i in `jot 10`; do (cd $mp2; /tmp/core5-dumper$i ) & done maxvnodes=`sysctl -n kern.maxvnodes` -trap "sysctl kern.maxvnodes=$maxvnodes > /dev/null" 0 +trap "sysctl kern.maxvnodes=$maxvnodes > /dev/null" EXIT INT $mntpoint/core5 $mntpoint/dir wait umount $mp2 @@ -131,7 +135,7 @@ EOF #include <time.h> #include <unistd.h> -#define MAXVNODES 1000 +#define MAXVNODES 1500 #define NBFILES 10000 #define PARALLEL 4 #define RTIME (10 * 60)
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