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2024-04-26 - 04:32
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7.osadl.org (updated Fri Apr 26, 2024 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189569910950,20cyclictest29259-21cron19:35:080
189569910649,23cyclictest12154-21/usr/sbin/munin00:25:290
189569910644,25cyclictest4959-21awk20:00:080
189569910639,44cyclictest19148-21latency_hist23:40:110
189569910635,49cyclictest20302-21unixbench_singl23:40:460
189569910353,18cyclictest25212-21ntpq21:00:370
189569910353,18cyclictest25212-21ntpq21:00:370
189569910154,19cyclictest17123-21sed00:35:100
189569910143,19cyclictest16755-21grep20:35:350
189569910039,32cyclictest6860-21sh22:23:440
189569910039,32cyclictest6860-21sh22:23:440
189569910039,28cyclictest554-21timerandwakeup21:15:430
18956999944,29cyclictest26039-21diskmemload22:50:250
18956999940,36cyclictest399-21runrttasks22:15:230
1826329817,46sleep20-21swapper/219:00:552
1826329817,46sleep20-21swapper/219:00:552
18956999742,25cyclictest8255-21ssh21:30:110
18956999742,21cyclictest7733-21grep20:05:430
18956999742,21cyclictest7733-21grep20:05:430
18956999641,24cyclictest1180-21latency_hist23:10:110
18956999639,36cyclictest25028-21sh23:50:230
18956999638,20cyclictest30445-21kworker/u8:300:00:080
18956999638,20cyclictest30445-21kworker/u8:300:00:080
18956999627,47cyclictest0-21swapper/022:30:320
18956999627,47cyclictest0-21swapper/022:30:320
18956999548,20cyclictest0-21swapper/000:07:310
18956999534,17cyclictest0-21swapper/019:45:450
18956999449,34cyclictest2494-21/usr/sbin/munin21:20:340
18956999447,13cyclictest12769-21apt-get23:30:210
18956999441,22cyclictest21456-21fschecks_time19:10:310
18956999441,22cyclictest21456-21fschecks_time19:10:310
18956999440,19cyclictest20465-21kernelversion21:50:410
18956999342,29cyclictest26813-21tr19:25:430
18956999342,29cyclictest26813-21tr19:25:430
18956999340,21cyclictest23102-21fschecks_count21:55:320
18956999339,31cyclictest21690-21ssh22:49:350
18956999338,31cyclictest11227-21sh00:23:440
18956999338,30cyclictest14695-21irqstats21:40:400
18956999338,30cyclictest14695-21irqstats21:40:400
18956999338,29cyclictest15037-21wc20:30:250
18956999333,16cyclictest0-21swapper/000:10:280
18956999250,16cyclictest24914-21df19:21:190
18956999141,21cyclictest399-21runrttasks22:03:290
18956999141,18cyclictest8789-21fschecks_count21:30:330
18956999071,9cyclictest4296-21apt-get23:15:210
18956999056,29cyclictest0-21swapper/022:09:170
18956999056,29cyclictest0-21swapper/022:09:170
18956999041,34cyclictest18339-21ssh21:46:050
18956999036,33cyclictest17429-21awk22:40:470
18956999036,33cyclictest17429-21awk22:40:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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