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2023-06-03 - 19:23

x86 Intel Xeon E3-1270 v2 @3500 MHz, Linux 4.19.25-rt16 (Profile)

Latency plot of system in rack #3, slot #0
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
Characteristics of the 50 highest latencies:
System rack3slot0.osadl.org (updated Sat Jun 03, 2023 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1505324925,8sleep20-21swapper/207:03:392
57142470,1sleep6893-21gdbus11:28:166
57142470,1sleep6893-21gdbus11:28:166
318302460,0sleep10-21swapper/111:14:261
285852440,0sleep60-21swapper/612:32:316
291262430,1sleep31548299cyclictest12:32:443
1532424230,8sleep00-21swapper/007:07:220
1518324229,9sleep70-21swapper/707:05:287
1517024129,9sleep30-21swapper/307:05:163
1289224128,9sleep40-21swapper/407:03:014
1532024028,8sleep50-21swapper/507:07:195
106532400,0sleep70-21swapper/712:14:387
1509723926,9sleep60-21swapper/607:04:156
1520923827,8sleep10-21swapper/107:05:471
251632300,0sleep10-21swapper/110:27:571
15485992015,4cyclictest893-21gdbus10:22:036
15485992015,4cyclictest893-21gdbus10:22:036
1548099131,1cyclictest25-21ksoftirqd/111:57:411
1547999138,3cyclictest9-21ksoftirqd/010:23:410
201582120,0sleep20-21swapper/210:25:582
1548699125,6cyclictest25470-21kworker/7:109:25:267
1548699125,6cyclictest13708-21kworker/7:310:02:547
15486991210,1cyclictest780-21runrttasks12:00:367
1548499120,11cyclictest7423-21sshd12:24:445
1548499120,11cyclictest7423-21sshd12:24:445
15483991210,1cyclictest49-21ksoftirqd/411:08:194
1548099128,3cyclictest25-21ksoftirqd/109:29:521
1548099128,3cyclictest25-21ksoftirqd/109:29:521
1548099127,3cyclictest25-21ksoftirqd/112:08:141
1548099127,3cyclictest25-21ksoftirqd/109:43:301
15480991211,1cyclictest25-21ksoftirqd/111:51:551
115562120,0sleep50-21swapper/509:27:315
1548699119,1cyclictest2535-21kworker/7:209:54:327
1548699119,1cyclictest17765-21kworker/7:010:29:027
1548699118,2cyclictest25675-21kworker/7:310:22:127
1548699118,2cyclictest25675-21kworker/7:310:22:127
1548699115,6cyclictest8052-21kworker/7:011:03:287
1548699115,6cyclictest17765-21kworker/7:010:38:387
1548699115,6cyclictest17765-21kworker/7:010:38:387
1548699115,6cyclictest1493-21kworker/7:111:13:547
1548699114,6cyclictest1493-21kworker/7:111:25:347
1548699114,6cyclictest11602-21kworker/7:111:53:107
1548599112,8cyclictest11834-21grepconf.sh10:00:486
1548499110,10cyclictest0-21swapper/509:33:305
1548499110,10cyclictest0-21swapper/509:33:305
1548499110,1cyclictest0-21swapper/509:28:275
1548499110,1cyclictest0-21swapper/509:28:275
1548299119,2cyclictest17962-21kworker/3:310:38:363
1548299119,2cyclictest17962-21kworker/3:310:38:363
1548099119,1cyclictest25-21ksoftirqd/111:27:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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