Messages in this thread | | | Subject | Re: [BUG] perf failed on multi-cpus system with multi-events specified | From | Peter Zijlstra <> | Date | Wed, 02 Mar 2011 10:38:36 +0100 |
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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.
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