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2023-12-09 - 09:24
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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 rackcslot4.osadl.org (updated Sat Dec 09, 2023 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
367133825130,7sleep0161rcuc/019:05:190
36727882248206,27sleep10-21swapper/119:07:021
367314799143138,3cyclictest3753389-21kworker/u8:022:17:591
3673147997025,3cyclictest3698482-21packagekitd20:10:041
37206192640,4chrt0-21swapper/121:05:001
38120422620,4sleep126-21ksoftirqd/123:11:491
38576782610,11sleep013-21ksoftirqd/000:15:230
37605582570,4sleep10-21swapper/122:01:151
367314799562,9cyclictest3792046-21apt-get22:45:211
3673147995623,3cyclictest3702762-21seq20:20:011
37857002550,3sleep13785697-21find22:35:371
37857002550,3sleep13785697-21find22:35:371
367314799548,3cyclictest3707795-21needreboot20:30:301
38707682530,5sleep10-21swapper/100:33:181
3673147995218,2cyclictest3709467-21tail20:35:261
3673147995218,2cyclictest3709467-21tail20:35:251
367314799518,5cyclictest3717855-21mailstats20:55:351
367314799517,2cyclictest3838667-21apt-key23:50:031
367314799517,2cyclictest3669655-1kworker/1:1H20:10:021
3673147995124,2cyclictest3738808-21ssh21:30:361
3673147995116,4cyclictest3813315-1kworker/1:0H00:00:011
3673147995113,7cyclictest3780016-21http22:30:201
159199510,4rtkit-daemon1590-21rtkit-daemon23:08:121
159199510,11rtkit-daemon3705746-21load20:25:351
367314799507,7cyclictest3776884-21tr22:25:211
38620422490,6sleep03862047-21pmu-power00:20:380
3673147994817,3cyclictest3682179-21tail19:30:291
3673147994810,2cyclictest0-21swapper/100:35:221
159199480,3rtkit-daemon1590-21rtkit-daemon22:51:060
159199480,3rtkit-daemon1590-21rtkit-daemon21:57:520
3673147994722,2cyclictest3678654-21cut19:20:321
3673147994722,2cyclictest3677597-21grep19:20:001
3673147994717,3cyclictest3693814-21apt-key20:00:021
367314799471,6cyclictest3722535-21diskmemload22:40:031
3673147994714,3cyclictest3711295-21grep20:40:251
3673147994713,3cyclictest3730069-21sendmail21:20:001
3673147994711,4cyclictest3796335-21tail22:50:291
367314799470,4cyclictest3827723-21grep23:35:011
367314799469,5cyclictest3763129-21kernelversion22:05:271
367314799468,5cyclictest3752268-21head21:50:301
3673147994613,2cyclictest0-21swapper/123:20:241
3673147994613,2cyclictest0-21swapper/123:20:241
367314799461,2cyclictest0-21swapper/119:40:171
3673147994611,2cyclictest3747740-21taskset21:44:461
3673146994613,18cyclictest3710844-21perf20:40:000
3673146994613,18cyclictest3710844-21perf20:40:000
159199460,3rtkit-daemon1590-21rtkit-daemon23:30:040
38683482450,3sleep0161rcuc/000:30:200
3673147994515,5cyclictest3828147-21ls23:35:211
3673147994514,2cyclictest0-21swapper/123:00:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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