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2025-11-05 - 21:54
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackaslot8.osadl.org (updated Wed Nov 05, 2025 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
264732295262,20sleep20-21swapper/207:07:242
266462269235,21sleep30-21swapper/307:09:183
264002266230,21sleep10-21swapper/107:06:271
264712257208,37sleep00-21swapper/007:07:220
29902640,0sleep00-21swapper/012:01:540
25072590,0sleep00-21swapper/010:20:280
226302580,0sleep10-21swapper/112:36:301
279972540,0sleep30-21swapper/309:19:273
262172460,0sleep00-21swapper/009:45:230
243132190,0sleep20-21swapper/211:05:182
158152170,0chrt0-21swapper/009:05:140
197712150,0sleep30-21swapper/311:27:413
2681699140,7cyclictest19032-21latency_hist12:35:003
2681699140,10cyclictest28416-21rm11:57:053
206842140,0sleep20-21swapper/211:01:502
116702140,0sleep20-21swapper/211:20:192
2681699132,8cyclictest8856-21chrt11:44:113
2681699132,8cyclictest0-21swapper/309:43:373
2681699132,6cyclictest508-21dbus-daemon11:09:323
2681699130,9cyclictest4557-21ssh10:22:513
2681699130,9cyclictest3413-21ssh12:25:093
2681699130,9cyclictest3191-21ssh09:54:523
2681699130,9cyclictest21810-21ssh12:35:523
2681699130,9cyclictest19337-21ssh11:00:223
2681699130,9cyclictest17391-21ssh11:50:083
2681699130,9cyclictest17194-21diskmemload11:22:593
2681699130,9cyclictest11076-21ssh12:07:253
2681699130,9cyclictest10843-21ssh10:00:573
2681699130,7cyclictest29331-21rm10:42:233
2681699130,7cyclictest1-21systemd08:10:073
2681699130,10cyclictest7257-21rm09:29:403
2681699130,10cyclictest3553-21ssh10:48:553
2681699130,10cyclictest23026-21ssh10:37:223
2681699120,9cyclictest9466-21ssh10:25:503
2681699120,9cyclictest8055-21ssh09:59:393
2681699120,9cyclictest6096-21chrt07:34:413
2681699120,9cyclictest31956-21ssh12:00:043
2681699120,9cyclictest31736-21ssh12:21:583
2681699120,9cyclictest29711-21sh09:49:473
2681699120,9cyclictest26142-21ssh10:14:343
2681699120,9cyclictest17408-21seq09:38:583
2681699120,9cyclictest11534-21taskset09:33:123
2681699120,8cyclictest30735-21ssh09:20:333
2681699120,7cyclictest9446-21ntpq08:50:163
2681699120,7cyclictest21483-21cpuspeed_turbos12:15:143
2681699120,7cyclictest1643-21ssh11:38:563
2681699120,7cyclictest15555-21sed10:05:173
2681699120,7cyclictest14660-21ssh10:57:113
2681699120,6cyclictest18617-21ntpq09:10:183
2681699120,11cyclictest0-21swapper/310:50:453
2681699114,6cyclictest19982-21systemd-journal08:55:433
2681699110,8cyclictest967-21taskset08:32:043
2681699110,8cyclictest8028-21chrt08:47:393
2681699110,8cyclictest30654-21snmpd08:16:263
2681699110,8cyclictest30276-21/usr/sbin/munin11:10:133
2681699110,8cyclictest14863-21chrt07:51:383
2681699110,8cyclictest14181-21ssh12:10:073
2681699110,7cyclictest29741-11brltty07:15:283
2681699110,7cyclictest2501-21cut08:35:163
2681699110,6cyclictest674-21ntpq07:20:193
2681699110,6cyclictest3912-21ssh11:15:133
2681699110,6cyclictest29147-21sh10:15:373
2681699110,6cyclictest2737-21memory07:25:163
2681699110,6cyclictest25390-21ssh11:31:393
2681699110,6cyclictest17194-21diskmemload10:33:553
2681699110,6cyclictest12556-21ssh11:45:573
2681699110,6cyclictest10035-21find07:40:203
2681699110,10cyclictest7360-21ntp_states07:35:213
2681199114,4cyclictest20293-21idleruntime-cro10:10:012
184842110,0sleep00-21swapper/010:34:320
2681699102,7cyclictest51850irq/136-enp4s0-07:45:163
2681699100,9cyclictest31427-21cron08:30:013
2681699100,7cyclictest19876-21taskset08:04:173
2681699100,6cyclictest16861-21unixbench-2d07:55:243
2681699100,5cyclictest28223-21timerandwakeup08:20:203
268169992,6cyclictest4851-21missed_timers08:40:183
268169990,7cyclictest19982-21systemd-journal07:10:443
268169990,7cyclictest0-21swapper/309:01:373
268119994,3cyclictest19982-21systemd-journal09:23:072
268119994,3cyclictest19982-21systemd-journal09:16:022
268029994,3cyclictest19982-21systemd-journal09:30:130
268029992,4cyclictest31874-21ls07:20:000
6520280,0sleep00-21swapper/012:26:250
268169984,3cyclictest508-21dbus-daemon08:05:073
268169980,7cyclictest16323-21/usr/sbin/munin09:05:223
268119984,3cyclictest19982-21systemd-journal07:44:152
268119984,3cyclictest1-21systemd08:40:062
268119983,3cyclictest19982-21systemd-journal10:39:042
268119983,3cyclictest19982-21systemd-journal10:11:572
268119982,3cyclictest28903-21munin-run08:25:012
268119980,5cyclictest31450-21turbostat08:30:002
268079985,2cyclictest11736-21in:imuxsock08:40:591
268079983,3cyclictest7661-21lldpd12:27:151
268079983,3cyclictest19982-21systemd-journal12:15:011
268079983,3cyclictest19982-21systemd-journal07:58:261
268029982,3cyclictest6144-21awk07:35:000
2367280,0sleep20-21swapper/207:25:152
15290280,1sleep10-21swapper/111:24:391
4101270,0sleep10-21swapper/109:55:131
268119976,1cyclictest28-21ksoftirqd/212:05:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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