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2022-06-27 - 17:57

x86 Intel Xeon E3-1220 @3100 MHz, Linux 4.19.8-rt6 (Profile)

Latency plot of system in rack #1, 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 rack1slot0.osadl.org (updated Mon Jun 27, 2022 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
305662900,2sleep02529299cyclictest12:23:370
325662830,0sleep00-21swapper/010:49:300
140552650,0sleep20-21swapper/210:13:312
140552650,0sleep20-21swapper/210:13:302
201612630,0sleep20-21swapper/212:05:282
35532610,0sleep20-21swapper/212:36:262
278282610,0sleep00-21swapper/010:54:040
79092580,0sleep232331-21gdbus11:17:202
43882580,0sleep20-21swapper/209:43:012
2493925834,7sleep00-21swapper/007:07:050
134632580,0sleep013458-21sshd12:02:300
318562570,0sleep20-21swapper/210:02:292
248222570,0sleep10-21swapper/112:23:101
162992570,0sleep316301-21sshd09:36:293
99632560,1sleep29952-21sshd11:57:152
157402560,1sleep115734-21sshd09:18:561
151282560,0sleep00-21swapper/012:39:520
69952550,1sleep121597-21nfsd11:39:391
303472550,0sleep10-21swapper/111:58:501
284932550,1sleep2321ktimersoftd/211:38:492
277192550,0sleep20-21swapper/211:26:192
277192550,0sleep20-21swapper/211:26:182
19722550,0sleep10-21swapper/112:31:191
183202540,2sleep12530199cyclictest10:26:081
2510725341,7sleep30-21swapper/307:09:003
2508125341,7sleep20-21swapper/207:08:392
2500825140,7sleep10-21swapper/107:07:501
93932490,2sleep12530199cyclictest10:20:301
64132490,0sleep10-21swapper/110:49:591
297832480,0sleep00-21swapper/009:45:000
133352480,1sleep3401ktimersoftd/310:33:103
283602450,0sleep2311rcuc/210:21:592
221952450,0sleep00-21swapper/009:11:380
126902440,0sleep10-21swapper/111:12:441
242672410,1sleep0820-21dbus-daemon11:01:130
42792200,0sleep13523-21sshd11:17:031
271362200,0sleep20-21swapper/210:56:262
254762200,1sleep1801-21systemd-logind10:43:581
63952190,1sleep26370-21sshd09:25:422
316412190,1sleep231644-21bash12:28:412
265532180,0sleep326546-21lspci11:06:203
171352180,0sleep1231rcuc/111:52:501
155802180,0sleep30-21swapper/310:28:263
139632180,1sleep313961-21grepconf.sh09:26:203
33892170,0sleep2311rcuc/211:07:032
215222170,0sleep00-21swapper/011:20:520
112482170,0sleep00-21swapper/012:17:090
78702160,1sleep27867-21lspci11:44:422
300382160,0sleep00-21swapper/011:46:190
298942160,0sleep30-21swapper/310:41:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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