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2026-03-31 - 16:43
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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 rackbslot7.osadl.org (updated Tue Mar 31, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7587991183,31cyclictest352-21runrttasks11:11:060
75879911143,59cyclictest0-21swapper/010:14:360
7587991114,29cyclictest352-21runrttasks10:27:160
7587991113,30cyclictest29339-21ssh09:27:570
7587991083,30cyclictest10774-21ssh10:45:080
7587991082,43cyclictest22946-21apt-get07:49:190
75879910747,53cyclictest23841-21sh09:19:110
75879910747,53cyclictest23841-21sh09:19:110
7587991073,25cyclictest19676-21snmpd10:55:150
7587991073,25cyclictest19676-21snmpd10:55:150
7587991072,25cyclictest5042-21sh11:29:220
76039910628,37cyclictest0-21swapper/208:59:212
7587991064,29cyclictest13013-21latency_hist07:19:350
7587991064,29cyclictest13013-21latency_hist07:19:350
75879910615,61cyclictest352-21runrttasks11:56:090
734421066,15sleep00-21swapper/007:03:070
6454210647,18sleep2181rcu_preempt06:59:392
7587991053,26cyclictest10125-21rm12:31:100
7597991042,84cyclictest24149-21ssh09:19:281
7587991045,10cyclictest0-21swapper/010:19:210
7587991033,30cyclictest32005-21sh12:14:200
7587991033,24cyclictest19780-21tune2fs10:59:300
7587991032,26cyclictest4636-21ssh11:28:580
7597991022,90cyclictest11695-21modprobe07:14:331
7597991022,90cyclictest11695-21modprobe07:14:331
7587991024,29cyclictest352-21runrttasks08:53:290
7587991023,29cyclictest352-21runrttasks08:55:520
7587991023,25cyclictest30236-21runrttasks11:16:320
7587991022,24cyclictest12235-21sh09:53:530
7587991014,33cyclictest31873-21if_eth011:19:320
7587991014,33cyclictest31873-21if_eth011:19:320
7587991012,22cyclictest27208-21seq08:00:100
75879910111,8cyclictest0-21swapper/009:54:200
7603991003,59cyclictest24145-21ssh09:19:272
75979910059,20cyclictest181rcu_preempt10:29:121
75979910059,20cyclictest181rcu_preempt10:29:121
7587991004,22cyclictest28957-21seq08:07:020
7587991004,22cyclictest28957-21seq08:07:020
7587991003,25cyclictest18527-21runrttasks11:50:550
7587991003,25cyclictest18527-21runrttasks11:50:550
758799994,33cyclictest352-21runrttasks11:44:220
758799994,30cyclictest352-21runrttasks09:01:390
758799993,29cyclictest24096-21apt-get09:19:440
758799993,26cyclictest29385-21/usr/sbin/munin08:09:470
758799993,25cyclictest30563-21latency09:29:340
7603999824,34cyclictest0-21swapper/208:59:102
758799983,35cyclictest9324-21ssh11:35:140
758799983,35cyclictest9324-21ssh11:35:140
758799983,35cyclictest352-21runrttasks12:23:530
758799983,27cyclictest352-21runrttasks12:13:120
758799983,27cyclictest352-21runrttasks12:13:120
758799983,23cyclictest5051-21ssh09:40:340
758799975,8cyclictest0-21swapper/012:04:240
758799975,31cyclictest21400-21unin-run10:09:090
758799974,28cyclictest8009-21tune2fs07:04:290
758799974,28cyclictest8009-21tune2fs07:04:290
7587999740,51cyclictest8696-21latency08:44:300
758799973,9cyclictest0-21swapper/010:39:200
7587999734,56cyclictest0-21swapper/010:29:430
7587999734,56cyclictest0-21swapper/010:29:430
758799972,30cyclictest352-21runrttasks09:07:410
758799972,23cyclictest17095-21ssh10:00:360
7603999628,28cyclictest0-21swapper/209:54:202
7603999623,31cyclictest31934-21latency11:19:342
7603999623,31cyclictest31934-21latency11:19:342
7597999655,8cyclictest181rcu_preempt10:49:091
758799964,30cyclictest5780-21tune2fs12:24:270
758799963,32cyclictest5706-21grep08:34:410
758799963,32cyclictest19676-21snmpd11:41:380
7603999529,28cyclictest27256-21taskset09:24:252
7603999528,22cyclictest723-21seq12:14:582
758799954,31cyclictest352-21runrttasks10:50:020
758799953,32cyclictest352-21runrttasks09:13:360
758799953,27cyclictest9348-21munin-node07:09:170
758799953,27cyclictest9348-21munin-node07:09:170
7587999532,56cyclictest3127-21cron08:29:080
758799953,21cyclictest20262-21taskset07:39:360
758799952,25cyclictest32348-21runrttasks08:18:540
758799952,22cyclictest23365-21ssh10:11:220
7603999427,24cyclictest0-21swapper/210:33:392
7603999427,24cyclictest0-21swapper/210:33:392
758799944,10cyclictest0-21swapper/009:34:200
7597999353,16cyclictest181rcu_preempt08:34:481
7597999333,15cyclictest0-21swapper/111:19:351
7597999333,15cyclictest0-21swapper/111:19:351
758799934,30cyclictest4300-21grep08:29:430
758799933,30cyclictest352-21runrttasks09:48:000
758799933,30cyclictest352-21runrttasks09:48:000
758799933,30cyclictest24557-21/usr/sbin/munin07:54:350
758799933,29cyclictest18907-21timerandwakeup07:34:430
760399923,66cyclictest10471-21apt-get10:44:402
7603999218,39cyclictest0-21swapper/207:59:352
7603999218,36cyclictest0-21swapper/209:34:192
7597999253,8cyclictest181rcu_preempt12:01:291
7597999253,8cyclictest181rcu_preempt12:01:291
758799924,33cyclictest7612-21unixbench_multi08:39:450
758799924,30cyclictest583-21wc08:19:350
758799922,25cyclictest14199-21grep07:20:000
758799922,25cyclictest14199-21grep07:20:000
7587999214,23cyclictest6279-21sh10:37:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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