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2026-03-11 - 21:35
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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 Mar 11, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
245902295270,16sleep10-21swapper/107:06:301
247952275244,20sleep30-21swapper/307:08:533
248522272247,16sleep20-21swapper/207:09:372
246882263234,19sleep00-21swapper/007:07:450
248372710,0sleep30-21swapper/311:30:313
287082600,0sleep00-21swapper/011:33:280
140982580,0sleep30-21swapper/311:44:253
121242580,0sleep012-21ksoftirqd/011:42:530
24632550,0sleep10-21swapper/111:55:561
267812530,0sleep30-21swapper/310:53:363
12872230,0sleep20-21swapper/210:38:182
319932190,0sleep10-21swapper/111:55:001
241922180,0sleep00-21swapper/011:10:500
185882130,0sleep30-21swapper/312:25:173
157162130,0sleep10-21swapper/112:04:451
239412120,0sleep20-21swapper/208:15:172
7462280,0sleep00-21swapper/009:44:050
6208280,0sleep30-21swapper/311:39:453
249939983,3cyclictest275-21systemd-journal07:50:322
249939982,3cyclictest6920-21cron07:40:022
249899987,1cyclictest22-21ksoftirqd/110:30:011
249899983,3cyclictest275-21systemd-journal07:15:011
249899980,7cyclictest19485-21ssh09:11:521
32523270,0sleep00-21swapper/010:18:210
249989973,3cyclictest658-21snmpd10:14:583
249989973,3cyclictest658-21snmpd09:48:373
249989973,3cyclictest275-21systemd-journal10:09:553
249989973,3cyclictest11793-21sed10:25:133
249989973,2cyclictest275-21systemd-journal08:23:583
249989970,1cyclictest32470-21ssh10:37:203
249939975,1cyclictest0-21swapper/209:16:352
249939974,2cyclictest504-21dbus-daemon11:08:402
249939974,2cyclictest27070-11brltty10:21:592
249939973,3cyclictest8082-21ntpq11:40:162
249939973,2cyclictest275-21systemd-journal08:10:332
249939973,1cyclictest0-21swapper/210:40:032
249939970,4cyclictest24463-21munin-run09:35:012
249939970,4cyclictest24463-21munin-run09:35:002
249899974,2cyclictest275-21systemd-journal09:00:401
249899973,3cyclictest658-21snmpd09:38:171
249899973,3cyclictest658-21snmpd09:33:331
249899973,3cyclictest658-21snmpd09:33:331
249899971,5cyclictest24821-21apt-get12:10:121
249899970,3cyclictest31957-21irqstats11:35:141
249859975,2cyclictest12-21ksoftirqd/007:20:010
249859974,2cyclictest2771-21/usr/sbin/munin10:20:140
249859973,3cyclictest560-21gdbus08:20:010
249859973,3cyclictest5078-21apt-get11:00:110
249859973,3cyclictest275-21systemd-journal11:28:400
249859973,2cyclictest275-21systemd-journal12:08:230
249859973,1cyclictest0-21swapper/012:39:050
249859972,3cyclictest275-21systemd-journal07:52:370
249989964,1cyclictest27788-21munin-node07:15:013
249989963,2cyclictest8601-21dump-pmu-power12:20:003
249989963,2cyclictest658-21snmpd07:58:083
249989963,2cyclictest504-21dbus-daemon07:15:023
249989963,2cyclictest501-21in:imuxsock09:59:543
249989963,2cyclictest4809-21cat10:40:153
249989963,2cyclictest4745-21ssh09:42:013
249989963,2cyclictest22976-21ssh10:31:283
249989963,2cyclictest2151-21sh11:17:203
249989963,2cyclictest17593-21ntp_states12:05:153
249989963,2cyclictest16194-21fschecks_count09:10:143
249989963,1cyclictest0-21swapper/309:34:353
249989963,1cyclictest0-21swapper/309:34:353
249989962,3cyclictest9791-21cat09:25:193
249989962,3cyclictest8818-21seq07:40:533
249989962,3cyclictest8425-21sshd08:53:043
249989962,3cyclictest658-21snmpd11:50:103
249989962,3cyclictest658-21snmpd11:20:273
249989962,3cyclictest658-21snmpd11:06:143
249989962,3cyclictest658-21snmpd11:00:293
249989962,3cyclictest658-21snmpd09:36:533
249989962,3cyclictest658-21snmpd09:08:563
249989962,3cyclictest658-21snmpd09:02:173
249989962,3cyclictest658-21snmpd08:45:363
249989962,3cyclictest658-21snmpd08:43:333
249989962,3cyclictest658-21snmpd08:16:153
249989962,3cyclictest658-21snmpd08:00:083
249989962,3cyclictest658-21snmpd07:46:243
249989962,3cyclictest658-21snmpd07:30:043
249989962,3cyclictest658-21snmpd07:30:043
249989962,3cyclictest30455-21expr08:30:113
249989962,3cyclictest26994-21expr10:15:113
249989962,3cyclictest26288-21cat12:30:113
249989962,3cyclictest24785-21ssh12:10:103
249989962,3cyclictest2273-21seq11:55:473
249989962,3cyclictest21239-21cat08:10:143
249989962,3cyclictest10511-21cat12:20:183
249989962,3cyclictest10048-21sensors08:55:193
249989962,2cyclictest275-21systemd-journal11:27:303
249989962,1cyclictest0-21swapper/311:13:413
249989962,1cyclictest0-21swapper/310:20:213
249989962,1cyclictest0-21swapper/309:50:273
249989962,1cyclictest0-21swapper/309:15:063
249989960,6cyclictest0-21swapper/311:45:113
249989960,5cyclictest1057-21ssh09:20:163
249989960,3cyclictest8136-21/usr/sbin/munin12:00:103
249989960,3cyclictest3188-21ssh10:00:183
249939963,2cyclictest9406-21sh11:02:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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