[BUG] perf kmem: Processed 0 events and LOST 75691!

[Han Pingtian]

Hello,

I got this with 3.0 perf, but the running kernel is a old one:

[root@hp-dl580g7-01 perf]# ./perf kmem record sleep 1
[ perf record: Woken up 0 times to write data ]
[ perf record: Captured and wrote 21.789 MB perf.data (~951977 samples)
]
Processed 0 events and LOST 76148!

Check IO/CPU overload!

[root@hp-dl580g7-01 perf]# ./perf kmem stat
Processed 0 events and LOST 76148!

Check IO/CPU overload!


SUMMARY
=======
Total bytes requested: 5725028
Total bytes allocated: 6291512
Total bytes wasted on internal fragmentation: 566484
Internal fragmentation: 9.003941%
Cross CPU allocations: 28/84295

Is this a bug?

Thanks.

-- 
Han Pingtian
Quality Engineer
hpt @ #kernel-qe
Red Hat, Inc
Freedom ... courage ... Commitment ... ACCOUNTABILITY
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