perf interrupt took too long

[Thorsten Glaser <t.glaser@tarent.de>]

Hi,

just got this vomited onto the console and into dmesg:

[  998.354300] perf interrupt took too long (2516 > 2500), lowering kernel.perf_event_max_sample_rate to 50000

What sort of problem is this, and why is it so important that it
occurs basically on every boot, and what can I do to “fix” it,
whatever a “fix” is. I do not use perf.

This is an IBM X61 laptop.

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 Duo CPU     T7300  @ 2.00GHz
stepping        : 11
microcode       : 0xba
cpu MHz         : 800.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 1
initial apicid  : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dtherm tpr_shadow vnmi flexpriority
bogomips        : 3990.28
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:


Thanks,
//mirabilos
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