You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-01-28 - 00:27

x86 Intel Core i7-2600K @3400 MHz, Linux 5.9.0-rc2-rt1 (Profile)

Latency plot of system in rack #4, 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 -h200 -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 rack4slot6.osadl.org (updated Fri Jan 27, 2023 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6190521160,106pltrace0-21swapper/207:07:462
6190521060,101pltrace0-21swapper/607:07:306
335352950,90pltrace0-21swapper/507:05:155
1639852790,0pltrace0-21swapper/009:45:350
649727752,12sleep30-21swapper/307:09:543
2818952770,5pltrace675299cyclictest11:00:347
624927660,12sleep10-21swapper/107:06:221
77942750,1sleep40-21swapper/411:13:494
284282750,0sleep70-21swapper/712:05:207
1297752730,0pltrace0-21swapper/709:10:357
1297752730,0pltrace0-21swapper/709:10:347
2831852720,1pltrace28322-21pltrace-run09:25:355
272342690,2sleep755-21ksoftirqd/709:56:447
231962690,0sleep20-21swapper/210:25:232
254452670,0pltrace0-21swapper/012:10:350
236412640,0sleep00-21swapper/010:56:390
642726246,12sleep00-21swapper/007:08:540
41592620,0sleep40-21swapper/412:13:344
627526145,12sleep70-21swapper/707:06:457
644026043,12sleep40-21swapper/407:09:074
2399252590,0pltrace0-21swapper/507:35:355
430952330,0pltrace4313-21tail11:40:351
2798852310,1pltrace27992-21pltrace-run08:40:341
671399240,23cyclictest0-21swapper/111:45:571
264432230,0sleep60-21swapper/610:28:336
1978652230,7pltrace671899cyclictest08:25:342
6725992119,1cyclictest0-21swapper/307:40:463
6737991911,6cyclictest0-21swapper/510:03:005
1466952190,1pltrace9-21ksoftirqd/010:20:160
6742991815,2cyclictest4969-21ssh11:41:476
2306852180,1pltrace23073-21pltrace-run10:55:342
2306852180,1pltrace19-21ksoftirqd/110:55:421
194082180,4chrt674299cyclictest07:30:156
181232180,0sleep20-21swapper/209:15:382
181232180,0sleep20-21swapper/209:15:372
172332180,0sleep50-21swapper/511:55:005
1624652180,2pltrace111rcu_preempt11:20:381
6737991712,2cyclictest0-21swapper/511:57:575
6737991711,3cyclictest0-21swapper/511:23:235
671899179,7cyclictest0-21swapper/212:04:512
6718991711,3cyclictest0-21swapper/212:25:412
6713991711,3cyclictest0-21swapper/108:36:081
303902170,0sleep40-21swapper/412:06:364
2831852170,0pltrace0-21swapper/109:30:331
2647052170,1pltrace19-21ksoftirqd/111:32:451
2301752170,4pltrace111rcu_preempt12:31:271
147912170,0sleep6481rcuc/611:51:006
779652160,1pltrace0-21swapper/110:40:351
6752991613,2cyclictest8421-21ssh10:41:437
6742991611,3cyclictest0-21swapper/612:16:216
6742991611,2cyclictest0-21swapper/612:10:586
6737991610,3cyclictest0-21swapper/507:27:055
673799160,15cyclictest0-21swapper/512:29:335
673199160,1cyclictest0-21swapper/409:28:224
671899161,4cyclictest0-21swapper/207:36:192
671899160,2cyclictest21268-21ssh09:50:262
671399160,4cyclictest0-21swapper/108:30:211
260272160,0sleep00-21swapper/009:55:250
2306852160,1pltrace43-21ksoftirqd/510:55:455
86052150,0pltrace111rcu_preempt11:08:136
767052150,11pltrace1186-21runrttasks12:19:511
6742991511,2cyclictest0-21swapper/610:06:446
6742991510,2cyclictest0-21swapper/612:34:466
6742991510,2cyclictest0-21swapper/608:17:086
674299151,12cyclictest0-21swapper/610:30:316
6737991510,3cyclictest0-21swapper/512:14:195
6737991510,3cyclictest0-21swapper/510:22:395
6737991510,3cyclictest0-21swapper/509:05:195
6737991510,3cyclictest0-21swapper/509:05:195
6737991510,2cyclictest0-21swapper/509:49:515
6737991510,2cyclictest0-21swapper/509:34:045
6737991510,2cyclictest0-21swapper/508:33:515
673799150,3cyclictest0-21swapper/511:15:535
673799150,3cyclictest0-21swapper/511:01:235
673799150,3cyclictest0-21swapper/508:40:345
673799150,14cyclictest0-21swapper/507:54:385
6731991513,1cyclictest20101-21sh10:54:294
6731991513,1cyclictest0-21swapper/411:46:584
6725991513,1cyclictest0-21swapper/310:58:103
6725991513,1cyclictest0-21swapper/309:50:003
6725991513,1cyclictest0-21swapper/309:33:403
672599150,14cyclictest0-21swapper/311:37:403
672599150,1cyclictest0-21swapper/312:03:543
671899159,4cyclictest0-21swapper/211:46:432
671899159,3cyclictest0-21swapper/211:33:232
671899159,3cyclictest0-21swapper/209:03:482
671899159,3cyclictest0-21swapper/209:03:482
671899159,3cyclictest0-21swapper/207:34:432
6718991510,2cyclictest0-21swapper/208:36:322
671899151,7cyclictest0-21swapper/207:58:162
671899150,3cyclictest0-21swapper/210:54:162
671899150,14cyclictest0-21swapper/212:06:262
671399159,3cyclictest0-21swapper/109:46:261
6713991511,2cyclictest0-21swapper/110:49:291
6713991510,3cyclictest0-21swapper/112:29:531
6713991510,3cyclictest0-21swapper/109:10:001
6713991510,3cyclictest0-21swapper/109:10:001
6713991510,2cyclictest0-21swapper/109:00:351
6713991510,2cyclictest0-21swapper/109:00:341
671399150,8cyclictest0-21swapper/109:13:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional