Messages in this thread |  | | | Date | Wed, 7 Apr 2010 07:38:55 -0300 | | From | Arnaldo Carvalho de Melo <> | | Subject | Re: Floating point exception by perf record |
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Em Wed, Apr 07, 2010 at 05:32:24PM +0900, Hitoshi Mitake escreveu: > On 04/06/10 03:31, Arnaldo Carvalho de Melo wrote: > > Em Sun, Apr 04, 2010 at 05:10:57PM +0900, Hitoshi Mitake escreveu: > > [root@doppio ~]# perf lock report | head -3 > > Warning: Error: expected 'data' but read 'overwrite' > > ID Name acquired contended > total wait (ns) max wait (ns) min wait (ns) > > > > 0xffff8800029d4b28&q->lock 0 0 0 > 0 0 > > [root@doppio ~]# > > > > My system details: > > > > [root@doppio ~]# uname -a > > Linux doppio.ghostprotocols.net 2.6.34-rc3-tip+ #1 SMP Mon Apr 5 > 13:49:42 BRT 2010 x86_64 x86_64 x86_64 GNU/Linux > > [root@doppio ~]# rpm -q newt > > newt-0.52.10-4.fc11.x86_64 > > [root@doppio ~]# > > > > No segfaults here :-\ > > > > - Arnaldo > > > > I tested perf lock trace and got a similar error (but different). > % sudo ./perf lock trace > Fatal: reading input file (size expected=3 received=0) > It seems that perf.data is broken :( I'll search the cause.
Take a look at:
http://git.kernel.org/?p=linux/kernel/git/acme/linux-2.6.git;a=summary
"perf" branch, there is at least one fix there, the "overwrite" one.
- Arnaldo
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