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分类: 系统运维

2017-06-29 19:00:30

最近服务器忽然变得很慢,很慢。排查了各种问题,各种怀疑,各种折腾,最后发现是CPU温度过高,降频了,降频了,降频了。
记录一下:
1,内核日志影子
  1. [ 2761.502936] perf: interrupt took too long (10788 > 10748), lowering kernel.perf_event_max_sample_rate to 18000
  2. [ 3775.114536] perf: interrupt took too long (13698 > 13485), lowering kernel.perf_event_max_sample_rate to 14000
  3. [ 4896.214284] perf: interrupt took too long (17275 > 17122), lowering kernel.perf_event_max_sample_rate to 11000
  4. [ 6379.029543] perf: interrupt took too long (25326 > 21593), lowering kernel.perf_event_max_sample_rate to 7000
  5. [ 9151.900238] perf: interrupt took too long (31833 > 31657), lowering kernel.perf_event_max_sample_rate to 6000
  6. [13024.406999] perf: interrupt took too long (40010 > 39791), lowering kernel.perf_event_max_sample_rate to 4000
  7. [19542.371362] perf: interrupt took too long (50099 > 50012), lowering kernel.perf_event_max_sample_rate to 3000
  8. [30380.717133] perf: interrupt took too long (62978 > 62623), lowering kernel.perf_event_max_sample_rate to 3000
  9. [30380.729842] perf: interrupt took too long (78753 > 78722), lowering kernel.perf_event_max_sample_rate to 2000
  10. [30380.784735] perf: interrupt took too long (98507 > 98441), lowering kernel.perf_event_max_sample_rate to 2000
  11. [30381.244220] perf: interrupt took too long (124173 > 123133), lowering kernel.perf_event_max_sample_rate to 1000
  12. [30384.253023] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 361908.001 msecs
  13. [30385.536514] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 999247.001 msecs
  14. [30385.905688] perf: interrupt took too long (158684 > 155216), lowering kernel.perf_event_max_sample_rate to 1000

2,/proc/cpuinfo

点击(此处)折叠或打开

  1. processor    : 0
  2. vendor_id    : GenuineIntel
  3. cpu family    : 6
  4. model        : 45
  5. model name    : Intel(R) Xeon(R) CPU E5-2430 0 @ 2.20GHz
  6. stepping    : 7
  7. microcode    : 0x710
  8. cpu MHz        : 183.906
  9. cache size    : 15360 KB
可以看到cpu MHz  183  呵呵,缩小了十倍,服务器能不慢么!!!!!!
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