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2026-01-03 - 17:01
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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 Sat Jan 03, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
187342283251,22sleep20-21swapper/207:05:592
188772278247,21sleep30-21swapper/307:07:503
189382272239,22sleep10-21swapper/107:08:351
188582272240,21sleep00-21swapper/007:07:330
116982690,0sleep10-21swapper/111:01:031
143862620,0sleep30-21swapper/311:58:183
46642580,0sleep10-21swapper/112:30:121
25212570,0sleep20-21swapper/210:19:472
226472570,0sleep10-21swapper/112:21:151
54462560,0sleep30-21swapper/307:50:023
202402540,0sleep20-21swapper/209:34:422
157162540,0sleep20-21swapper/210:45:152
125232510,1sleep0131rcuc/012:35:000
277962180,0sleep30-21swapper/310:51:573
103192150,0sleep00-21swapper/011:55:190
276512110,0sleep10-21swapper/109:56:361
1916299118,2cyclictest4223-21irqstats09:25:150
1916699102,7cyclictest15519-21sh12:17:231
12032100,0sleep11208-21tail10:00:161
12032100,0sleep11208-21tail10:00:161
191669990,8cyclictest3016-21ssh10:38:031
18808290,0sleep20-21swapper/212:38:182
191749987,1cyclictest34-21ksoftirqd/311:50:003
191749983,3cyclictest275-21systemd-journal08:43:493
191629984,3cyclictest275-21systemd-journal11:45:410
191629983,2cyclictest27748-21turbostat12:25:010
5589270,0sleep20-21swapper/210:02:432
5589270,0sleep20-21swapper/210:02:422
23917270,0sleep30-21swapper/311:26:443
191749976,1cyclictest34-21ksoftirqd/308:30:013
191749974,2cyclictest3799-21ntpq11:15:153
191749973,3cyclictest275-21systemd-journal09:18:193
191709974,2cyclictest504-21dbus-daemon12:17:452
191709973,3cyclictest275-21systemd-journal10:00:022
191709973,3cyclictest275-21systemd-journal07:27:202
191709970,4cyclictest25666-21idleruntime-cro08:35:012
191669976,1cyclictest30009-21apt-get09:40:101
191669975,1cyclictest21126-21cron12:40:001
191669974,2cyclictest275-21systemd-journal09:15:001
191669973,3cyclictest674-21lldpd11:19:331
191669973,3cyclictest275-21systemd-journal10:51:121
191669973,2cyclictest275-21systemd-journal08:20:061
191669973,1cyclictest14780-21munin-run09:50:021
191669970,3cyclictest275-21systemd-journal10:10:471
191629976,1cyclictest0-21swapper/007:20:160
191629973,3cyclictest658-21snmpd11:07:200
191629973,3cyclictest658-21snmpd07:43:090
191629973,3cyclictest504-21dbus-daemon07:15:010
191629973,1cyclictest0-21swapper/012:17:280
191629970,7cyclictest28885-21ssh09:57:290
12521270,0sleep20-21swapper/211:39:072
11852270,0sleep00-21swapper/011:01:110
2451260,0sleep20-21swapper/210:55:432
191749966,0cyclictest0-21swapper/312:12:013
191749966,0cyclictest0-21swapper/311:30:173
191749965,1cyclictest8854-21diskmemload10:35:543
191749965,0cyclictest50850irq/136-enp4s0-10:00:153
191749965,0cyclictest50850irq/136-enp4s0-10:00:153
191749964,2cyclictest501-21in:imuxsock08:50:253
191749963,2cyclictest8429-21ssh09:45:303
191749963,2cyclictest674-21lldpd09:20:133
191749963,2cyclictest658-21snmpd08:20:473
191749963,2cyclictest6024-21ssh09:25:543
191749963,2cyclictest6013-21diskstats11:35:153
191749963,2cyclictest501-21in:imuxsock07:36:273
191749963,2cyclictest275-21systemd-journal12:20:153
191749963,2cyclictest25961-21grep07:20:203
191749963,2cyclictest25475-21cat09:55:213
191749963,2cyclictest2397-21sh10:55:423
191749963,2cyclictest18239-21cut10:10:133
191749963,2cyclictest15044-21ssh10:26:103
191749963,2cyclictest14525-21cat11:40:123
191749963,2cyclictest10196-21sh12:33:193
191749963,1cyclictest0-21swapper/312:08:443
191749962,3cyclictest9771-21expr09:10:173
191749962,3cyclictest658-21snmpd12:26:313
191749962,3cyclictest658-21snmpd12:02:323
191749962,3cyclictest658-21snmpd12:02:323
191749962,3cyclictest658-21snmpd11:10:013
191749962,3cyclictest658-21snmpd11:00:403
191749962,3cyclictest658-21snmpd08:57:293
191749962,3cyclictest658-21snmpd08:12:163
191749962,3cyclictest658-21snmpd07:56:103
191749962,3cyclictest6198-21cat07:50:163
191749962,3cyclictest5610-21ntpq09:00:163
191749962,3cyclictest560-21gdbus07:15:003
191749962,3cyclictest19375-21sed11:05:213
191749962,3cyclictest11191-21date11:20:003
191749962,1cyclictest0-21swapper/312:16:583
191749962,1cyclictest0-21swapper/311:50:273
191749962,1cyclictest0-21swapper/310:42:253
191749962,1cyclictest0-21swapper/309:50:083
191749962,1cyclictest0-21swapper/309:36:283
191749961,3cyclictest275-21systemd-journal09:30:323
191749960,6cyclictest0-21swapper/310:31:563
191749960,6cyclictest0-21swapper/310:09:423
191749960,0cyclictest0-21swapper/312:35:203
191709966,0cyclictest0-21swapper/210:27:582
191709966,0cyclictest0-21swapper/209:35:152
191709963,2cyclictest674-21lldpd11:41:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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