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2022-11-27 - 15:32

x86 Intel Xeon E3-1220 @3100 MHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #2, 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 rack2slot0.osadl.org (updated Sun Nov 27, 2022 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205322760,0sleep10-21swapper/109:28:431
113902640,0sleep20-21swapper/211:10:122
307632600,0sleep20-21swapper/212:03:112
189952550,1sleep3391rcuc/309:36:063
205772500,0sleep10-21swapper/112:00:251
205122500,0sleep00-21swapper/012:08:460
52322480,0sleep00-21swapper/012:12:580
35652470,2sleep32377199cyclictest09:16:273
33662470,0sleep00-21swapper/010:28:100
19742470,0sleep00-21swapper/011:23:520
131412450,2sleep32377199cyclictest11:34:443
289292420,0sleep20-21swapper/210:58:272
103182400,0sleep20-21swapper/212:14:202
2356723423,6sleep20-21swapper/207:08:592
234782309,7sleep10-21swapper/107:07:531
2353322917,7sleep30-21swapper/307:08:323
2351922816,7sleep00-21swapper/007:08:240
308102150,0sleep20-21swapper/210:19:022
65642140,1sleep16567-21bash10:52:541
316872140,0sleep10-21swapper/109:15:211
121372140,0sleep30-21swapper/311:26:123
2376899130,12cyclictest13353-21sshd12:31:022
206542130,0sleep1241ktimersoftd/110:08:321
23768991210,1cyclictest19288-21sshd10:48:022
2376299120,1cyclictest0-21swapper/110:22:591
2375899126,5cyclictest21891-21sshd11:12:390
2375899125,6cyclictest598-21avahi-daemon11:41:020
2375899125,6cyclictest598-21avahi-daemon10:32:010
2375899125,6cyclictest598-21avahi-daemon09:15:150
2375899120,0cyclictest0-21swapper/009:38:190
23771991110,0cyclictest0-21swapper/310:06:413
23771991110,0cyclictest0-21swapper/310:03:113
2377199110,10cyclictest2527-21sshd12:28:323
2377199110,10cyclictest0-21swapper/311:06:413
2377199110,10cyclictest0-21swapper/311:01:523
2377199110,10cyclictest0-21swapper/309:34:113
2376899119,1cyclictest0-21swapper/212:17:432
2376899119,1cyclictest0-21swapper/212:17:422
2376899110,10cyclictest0-21swapper/210:36:532
2376899110,10cyclictest0-21swapper/210:28:522
2376899110,0cyclictest0-21swapper/209:28:222
23762991110,0cyclictest0-21swapper/108:50:191
2376299110,0cyclictest0-21swapper/112:14:591
2376299110,0cyclictest0-21swapper/111:45:591
2375899117,3cyclictest0-21swapper/012:35:490
2375899117,3cyclictest0-21swapper/010:15:290
2375899115,5cyclictest598-21avahi-daemon10:45:150
2375899115,5cyclictest598-21avahi-daemon10:40:270
2375899114,6cyclictest598-21avahi-daemon09:14:290
2375899114,1cyclictest968-21sshd10:59:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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