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2023-05-28 - 01:37

x86 Intel Xeon-E31220L @2200 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #5, 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 rack5slot0.osadl.org (updated Sat May 27, 2023 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2089621280,3sleep31708599cyclictest09:26:533
983121240,1sleep31877-21nfsd11:20:273
16647211032,47sleep30-21swapper/307:07:593
16581210133,40sleep10-21swapper/107:07:091
154912990,1sleep30-21swapper/309:53:143
28472960,1sleep12848-21bash11:55:241
86252930,4sleep00-21swapper/009:40:420
133422920,1sleep017081-21cyclictest12:25:080
235322910,1sleep08-21rcu_preempt10:05:340
243012900,3sleep01708299cyclictest11:29:180
161672890,2sleep216161-21rm09:37:502
302032880,3sleep01708299cyclictest08:50:240
240072870,2sleep224011-21id10:16:502
176742850,2sleep217673-21bash11:57:002
32802840,3sleep30-21swapper/309:13:273
322362840,2sleep332234-21sshd09:24:293
149302830,1sleep20-21swapper/211:38:582
212712820,1sleep20-21swapper/209:26:562
169112820,2sleep116908-21sshd11:35:321
70362800,3sleep27022-21sshd12:06:312
146342800,2sleep20-21swapper/211:31:452
219652790,1sleep30-21swapper/309:46:143
288342770,2sleep328833-21id11:51:043
256412760,1sleep12121-21runrttasks08:40:191
211902760,1sleep11708399cyclictest10:23:581
261672740,3sleep21708499cyclictest10:57:222
169052740,2sleep116904-21sshd12:07:371
10222740,0sleep00-21swapper/012:02:200
83912730,2sleep38388-21bash12:06:403
297852730,1sleep029780-21sshd11:36:590
231252730,1sleep30-21swapper/310:31:303
310672720,2sleep10-21swapper/109:28:081
112632720,1sleep20-21swapper/212:21:132
159222700,0sleep00-21swapper/010:23:210
5082680,0sleep00-21swapper/009:39:530
198322680,1sleep20-21swapper/212:00:452
170432680,3sleep31708599cyclictest09:57:113
1661926331,12sleep20-21swapper/207:07:382
1678225832,14sleep00-21swapper/007:09:360
154252370,2sleep115423-21sshd10:19:371
8242360,1sleep10-21swapper/111:44:341
67712360,34sleep228750irq/26-ahci[00011:16:352
13952300,1sleep11708399cyclictest10:25:231
298082290,1sleep10-21swapper/112:23:201
28612280,3sleep01708299cyclictest10:10:380
213052280,1sleep30-21swapper/310:38:393
272752270,2sleep127272-21sshd11:22:261
196972270,3sleep01876-21nfsd10:38:280
161002270,1sleep016096-21sshd11:31:550
68722260,2sleep21876-21nfsd10:48:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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