Messages in this thread | | | Date | Wed, 2 Mar 2011 18:12:53 +0800 | From | Han Pingtian <> | Subject | Re: [BUG] perf failed on multi-cpus system with multi-events specified |
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On Wed, Mar 02, 2011 at 10:38:36AM +0100, Peter Zijlstra wrote: > On Wed, 2011-03-02 at 11:58 +0800, Han Pingtian wrote: > > Error: sys_perf_event_open() syscall returned with -1 (Too many open > > files). /bin/dmesg may provide additional information. > > Well, you tried to use 42 events (quick count), we need to open a fd for > each cpu for each event, which results in 1008 fds, which together with > some actual file handles might have tickled your fd limit. Got it. Thanks.
-- Han Pingtian Quality Engineer hpt @ #kernel-qe Red Hat, Inc Freedom ... courage ... Commitment ... ACCOUNTABILITY
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