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2026-08-31 - 19:10
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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 Mon Aug 31, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171862299275,14sleep20-21swapper/207:05:022
189352273242,21sleep10-21swapper/107:07:181
190052265236,19sleep30-21swapper/307:08:133
189292260230,19sleep00-21swapper/007:07:120
187022880,0sleep30-21swapper/311:28:443
171122760,0sleep20-21swapper/209:33:182
171122760,0sleep20-21swapper/209:33:182
263812660,0sleep20-21swapper/209:57:452
85912620,1sleep20-21swapper/212:38:582
288202600,0sleep20-21swapper/212:12:432
270622590,0sleep00-21swapper/010:35:510
104402590,0sleep10-21swapper/111:23:531
104402590,0sleep10-21swapper/111:23:531
61262580,0sleep30-21swapper/311:01:493
174552580,0sleep10-21swapper/108:15:131
94082570,0sleep30-21swapper/311:23:073
94082570,0sleep30-21swapper/311:23:073
24162570,0sleep10-21swapper/112:35:121
158042550,0sleep30-21swapper/309:13:253
310132520,0sleep20-21swapper/210:38:492
307972490,0sleep30-21swapper/312:14:123
234542200,0sleep20-21swapper/211:30:552
245842160,0sleep20-21swapper/211:50:412
311442150,0sleep30-21swapper/309:22:143
185582150,0sleep00-21swapper/011:28:360
8282140,0sleep20-21swapper/210:40:132
122692140,0sleep30-21swapper/309:49:533
169822130,0sleep10-21swapper/111:27:251
220732110,0sleep022080-21gltestperf09:55:150
1927299107,3cyclictest22-21ksoftirqd/109:20:001
2725290,0sleep10-21swapper/112:16:061
192769992,3cyclictest10929-21ls09:30:002
192679992,4cyclictest31177-21perf10:20:010
3055280,0sleep10-21swapper/111:38:351
192809985,2cyclictest6679-21awk11:40:193
192809980,7cyclictest14369-21ssh09:31:143
192809980,7cyclictest14369-21ssh09:31:143
192769980,5cyclictest8173-21grep07:55:012
192679986,1cyclictest0-21swapper/010:10:130
19033280,0sleep00-21swapper/009:15:140
11638280,0sleep10-21swapper/110:26:591
32277270,0chrt0-21swapper/110:00:481
192809974,2cyclictest6391-21ssh10:24:253
192809973,3cyclictest15221-21snmpd09:58:563
192809971,5cyclictest23752-21smart_sda11:50:203
192809970,6cyclictest7254-21apt-config09:05:003
192769970,6cyclictest0-21swapper/210:17:022
192729973,3cyclictest275-21systemd-journal09:10:061
192729973,3cyclictest275-21systemd-journal08:49:081
192729973,3cyclictest275-21systemd-journal07:29:571
192729972,3cyclictest275-21systemd-journal07:40:361
192729971,6cyclictest51050irq/138-enp4s0-11:46:321
192679974,2cyclictest275-21systemd-journal11:45:180
192679973,3cyclictest275-21systemd-journal12:28:500
192679973,3cyclictest275-21systemd-journal09:49:210
192679973,3cyclictest275-21systemd-journal07:15:010
192679973,3cyclictest22532-21wc07:15:020
192679973,3cyclictest15221-21snmpd10:53:430
192679973,3cyclictest15221-21snmpd08:46:050
192679973,1cyclictest25977-21munin-run08:35:000
192679972,3cyclictest275-21systemd-journal11:39:170
192679971,3cyclictest20923-21ls09:55:010
192809966,0cyclictest0-21swapper/311:17:343
192809966,0cyclictest0-21swapper/309:54:353
192809964,1cyclictest9442-21diskmemload10:50:163
192809964,1cyclictest26604-21df08:35:123
192809963,2cyclictest8022-21sh10:44:313
192809963,2cyclictest31530-21ssh10:39:123
192809963,2cyclictest3083-21awk12:35:153
192809963,2cyclictest30266-21sh09:40:253
192809963,2cyclictest23938-21ssh11:12:263
192809963,2cyclictest23638-21seq08:28:573
192809963,2cyclictest23323-21tr10:15:123
192809963,2cyclictest19977-21sshd12:25:523
192809963,2cyclictest1876-21cat08:50:203
192809963,2cyclictest18005-21ssh11:47:053
192809963,2cyclictest0-21swapper/312:00:023
192809962,3cyclictest7927-21ls10:25:123
192809962,3cyclictest30918-21cat11:55:123
192809962,3cyclictest30255-21expr10:00:113
192809962,3cyclictest27769-21cat07:25:163
192809962,3cyclictest275-21systemd-journal12:05:173
192809962,3cyclictest275-21systemd-journal11:05:063
192809962,3cyclictest1626-21munin-run11:00:013
192809962,3cyclictest15221-21snmpd11:35:113
192809962,3cyclictest15221-21snmpd10:30:183
192809962,3cyclictest15221-21snmpd09:37:033
192809962,3cyclictest15221-21snmpd08:00:103
192809962,3cyclictest15221-21snmpd07:58:283
192809962,3cyclictest15221-21snmpd07:54:463
192809962,3cyclictest15221-21snmpd07:45:103
192809962,3cyclictest1-21systemd07:40:063
192809962,3cyclictest0-21swapper/310:47:373
192809962,2cyclictest15242-21fw_packets10:10:143
192809961,4cyclictest18832-21fschecks_time09:15:133
192809961,4cyclictest0-21swapper/311:30:133
192809961,3cyclictest30491-21rm12:32:253
192809961,3cyclictest275-21systemd-journal08:55:493
192809961,3cyclictest10735-21sh10:07:243
192809960,6cyclictest0-21swapper/312:24:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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