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2026-09-21 - 00:15
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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 50 highest latencies:
System rackaslot8.osadl.org (updated Sun Sep 20, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304992359291,21sleep10-21swapper/107:07:361
304952280254,17sleep20-21swapper/207:07:332
304562267236,20sleep00-21swapper/007:07:020
305902254224,20sleep30-21swapper/307:08:453
287872800,0sleep30-21swapper/311:30:003
24312600,0sleep30-21swapper/312:11:533
57872590,0sleep00-21swapper/011:35:140
290312590,0sleep30-21swapper/312:08:493
222242570,0sleep20-21swapper/212:04:592
142562560,0sleep20-21swapper/211:20:342
209642540,0sleep20-21swapper/209:29:252
235522530,0sleep020687-21diskmemload10:48:120
9372230,0sleep30-21swapper/311:51:273
239952190,0sleep228-21ksoftirqd/210:29:212
198992190,0sleep20-21swapper/210:06:542
16292180,0sleep10-21swapper/112:11:141
137602180,0sleep20-21swapper/210:03:342
108782180,0sleep10-21swapper/110:01:211
7662170,1sleep1211rcuc/110:15:151
23152160,0sleep00-21swapper/009:17:590
189362160,0sleep10-21swapper/109:27:531
31292140,0sleep10-21swapper/109:18:361
238462140,0sleep00-21swapper/011:07:230
50962130,0sleep30-21swapper/309:58:193
324642130,0chrt0-21swapper/010:53:370
315942130,0sleep10-21swapper/110:52:591
288732130,0sleep00-21swapper/011:49:230
218562120,0sleep121858-21sh11:45:121
172852120,0sleep00-21swapper/012:20:310
3080899106,3cyclictest14917-21snmpd10:31:522
32604290,0sleep20-21swapper/210:53:442
308129994,4cyclictest504-21dbus-daemon08:40:213
308089993,2cyclictest275-21systemd-journal11:20:002
308089991,5cyclictest141rcu_preempt08:10:132
308039998,1cyclictest22-21ksoftirqd/111:40:011
307989993,3cyclictest9577-21munin-run08:45:010
308089986,1cyclictest28-21ksoftirqd/208:35:002
308089980,7cyclictest28400-21ssh10:12:032
308039983,3cyclictest18932-21munin-run11:05:001
307989987,1cyclictest12-21ksoftirqd/011:35:010
307989985,2cyclictest14917-21snmpd09:57:480
307989985,2cyclictest10239-21ssh09:41:350
9255270,0sleep10-21swapper/109:21:531
308129974,2cyclictest275-21systemd-journal07:29:453
308129973,3cyclictest14917-21snmpd10:19:453
308129973,3cyclictest14917-21snmpd10:13:223
308129973,1cyclictest0-21swapper/312:37:523
308129973,1cyclictest0-21swapper/312:37:523
308129973,1cyclictest0-21swapper/311:18:293
308129973,1cyclictest0-21swapper/309:21:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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