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Add mountCgroups() and tweak/correct fixLimits()

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This commit is contained in:
Bob Lantz
2012-04-08 20:49:04 -07:00
parent 50202e1246
commit a7648e78fb
1 changed files with 13 additions and 2 deletions
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mininet/util.py
+13 -2
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@@ -305,8 +305,19 @@ def makeNumeric( s ):
def fixLimits(): def fixLimits():
"Fix ridiculously small resource limits." "Fix ridiculously small resource limits."
setrlimit( RLIMIT_NPROC, ( 4096, 8192 ) ) setrlimit( RLIMIT_NPROC, ( 8192, 8192 ) )
setrlimit( RLIMIT_NOFILE, ( 16384, 32768 ) ) setrlimit( RLIMIT_NOFILE, ( 16384, 16384 ) )
def mountCgroups():
"Make sure cgroups file system is mounted"
mounts = quietRun( 'mount' )
cgdir = '/sys/fs/cgroup'
csdir = cgdir + '/cpuset'
if 'cgroups on %s' % cgdir not in mounts:
raise Exception( "cgroups not mounted on " + cgdir )
if 'cpuset on %s' % csdir not in mounts:
errRun( 'mkdir -p', csdir )
errRun( 'mount -t cgroup -ocpuset cpuset', csdir )
def natural( text ): def natural( text ):
"To sort sanely/alphabetically: sorted( l, key=natural )" "To sort sanely/alphabetically: sorted( l, key=natural )"