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2022-07-05 - 21:26

x86 Intel N455 @1660 MHz, Linux 5.4.34-rt21 (Profile)

Latency plot of system in rack #3, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 100 highest latencies:
System rack3slot6 (updated Tue Jul 05, 2022 12:45:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2472921420,17sleep12868199cyclictest08:30:321
3194021030,20sleep12868199cyclictest10:25:431
28201210030,31sleep10-21swapper/107:06:121
2818528818,31sleep00-21swapper/007:06:000
143242770,10sleep02867099cyclictest08:00:240
28670997531,16cyclictest9-21ksoftirqd/008:30:290
28670997433,18cyclictest9-21ksoftirqd/007:35:260
28670997238,12cyclictest9-21ksoftirqd/009:20:000
39612710,10sleep00-21swapper/012:15:160
28681997142,17cyclictest15624-21runrttasks11:15:141
28670997133,14cyclictest9-21ksoftirqd/009:05:010
28670997034,12cyclictest9-21ksoftirqd/011:20:000
28670997033,14cyclictest9-21ksoftirqd/012:30:000
28670996935,11cyclictest9-21ksoftirqd/009:25:000
28670996930,16cyclictest9-21ksoftirqd/009:35:230
28670996833,13cyclictest9-21ksoftirqd/011:00:000
28670996833,12cyclictest9-21ksoftirqd/011:15:000
28670996831,13cyclictest9-21ksoftirqd/010:00:000
28670996736,12cyclictest9-21ksoftirqd/010:20:010
28670996733,13cyclictest9-21ksoftirqd/007:15:000
28670996732,11cyclictest9-21ksoftirqd/008:00:010
28670996731,12cyclictest9-21ksoftirqd/011:50:320
28670996632,11cyclictest9-21ksoftirqd/011:10:010
28670996631,12cyclictest9-21ksoftirqd/009:45:050
28670996614,17cyclictest8503-21cron10:55:010
2867099659,12cyclictest10355-21cron07:50:010
28670996530,13cyclictest9-21ksoftirqd/008:30:000
28681996436,16cyclictest0-21swapper/108:45:151
28681996430,22cyclictest0-21swapper/107:15:111
28670996432,11cyclictest9-21ksoftirqd/007:40:060
28670996431,13cyclictest9-21ksoftirqd/010:00:060
28670996430,11cyclictest9-21ksoftirqd/007:20:010
28670996429,13cyclictest9-21ksoftirqd/008:40:010
28670996429,12cyclictest9-21ksoftirqd/012:40:000
28670996429,12cyclictest9-21ksoftirqd/011:35:010
28670996428,14cyclictest9-21ksoftirqd/009:30:010
28670996428,12cyclictest9-21ksoftirqd/011:30:000
28670996427,13cyclictest9-21ksoftirqd/009:45:010
28670996425,15cyclictest9-21ksoftirqd/011:05:000
28681996335,17cyclictest0-21swapper/109:55:121
28681996335,17cyclictest0-21swapper/109:15:141
28681996334,16cyclictest0-21swapper/107:40:241
28681996333,18cyclictest0-21swapper/107:25:111
28681996310,46cyclictest15150irq/30-ahci[00010:20:001
28670996330,11cyclictest9-21ksoftirqd/008:05:050
28670996329,11cyclictest9-21ksoftirqd/008:25:010
28670996325,24cyclictest9-21ksoftirqd/008:10:310
189062630,6sleep121-21ksoftirqd/111:25:021
28681996234,17cyclictest0-21swapper/111:50:471
28681996233,17cyclictest0-21swapper/109:50:111
28681996232,15cyclictest0-21swapper/108:00:141
28670996232,16cyclictest9-21ksoftirqd/010:25:410
28670996229,16cyclictest9-21ksoftirqd/009:10:220
28670996227,13cyclictest9-21ksoftirqd/010:35:040
28670996227,13cyclictest9-21ksoftirqd/008:55:000
28670996227,12cyclictest9-21ksoftirqd/011:50:010
28670996227,12cyclictest9-21ksoftirqd/011:50:000
2867099622,55cyclictest29236-21kworker/0:311:57:340
28681996131,16cyclictest0-21swapper/109:10:141
28681996128,18cyclictest0-21swapper/108:15:121
28670996126,12cyclictest9-21ksoftirqd/011:40:000
28670996126,12cyclictest9-21ksoftirqd/008:45:000
218842613,12sleep121897-21vmstat08:20:381
143132610,7sleep121-21ksoftirqd/111:10:331
28681996031,16cyclictest0-21swapper/110:05:151
28681996031,15cyclictest0-21swapper/108:55:131
2867099604,40cyclictest2998-21awk12:10:380
28670996027,12cyclictest9-21ksoftirqd/009:05:110
28670996026,12cyclictest9-21ksoftirqd/012:04:590
28670996024,12cyclictest9-21ksoftirqd/007:25:010
28670996011,22cyclictest9-21ksoftirqd/012:30:280
2868199595,11cyclictest21-21ksoftirqd/109:45:011
28681995932,14cyclictest0-21swapper/109:00:251
28681995930,17cyclictest0-21swapper/107:20:141
28681995930,14cyclictest0-21swapper/109:05:141
28681995927,19cyclictest0-21swapper/110:10:131
28670995927,11cyclictest9-21ksoftirqd/009:50:120
28670995926,12cyclictest9-21ksoftirqd/010:10:000
28670995926,11cyclictest9-21ksoftirqd/010:50:000
28670995924,12cyclictest9-21ksoftirqd/008:55:360
28670995923,12cyclictest9-21ksoftirqd/012:25:000
28670995923,12cyclictest9-21ksoftirqd/010:34:590
28670995922,13cyclictest9-21ksoftirqd/010:25:000
28670995913,23cyclictest9-21ksoftirqd/012:05:170
28670995911,30cyclictest9-21ksoftirqd/008:18:470
28681995832,15cyclictest0-21swapper/111:45:171
28681995832,15cyclictest0-21swapper/111:45:161
28681995831,16cyclictest0-21swapper/110:40:141
2868199582,11cyclictest21-21ksoftirqd/107:40:011
28670995823,13cyclictest9-21ksoftirqd/007:30:000
313372576,41sleep10-21swapper/112:00:181
2868199574,11cyclictest21-21ksoftirqd/112:30:011
2868199574,11cyclictest21-21ksoftirqd/108:00:001
28681995730,19cyclictest21-21ksoftirqd/110:35:241
28670995722,12cyclictest9-21ksoftirqd/011:25:010
28670995722,12cyclictest9-21ksoftirqd/009:34:590
28670995721,13cyclictest9-21ksoftirqd/011:45:000
131102576,11sleep10-21swapper/111:05:501
2868199567,10cyclictest21-21ksoftirqd/111:05:001
2868199563,11cyclictest21-21ksoftirqd/108:45:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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