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2026-05-03 - 19:38
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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 rackbslot7.osadl.org (updated Sun May 03, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310669911967,33cyclictest1750-21ssh11:36:532
310649911470,37cyclictest2374-21systemd-journal07:11:551
310589911150,53cyclictest0-21swapper/010:17:000
310589911150,53cyclictest0-21swapper/010:17:000
3062721096,16sleep00-21swapper/006:58:230
310649910857,44cyclictest5508-21diskmemload12:17:211
310589910529,57cyclictest0-21swapper/012:02:100
310589910529,57cyclictest0-21swapper/012:02:100
929121040,6sleep09260-21ssh09:07:210
929121040,6sleep09260-21ssh09:07:210
31058991033,68cyclictest29640-21latency_hist09:41:590
31058991033,68cyclictest29640-21latency_hist09:41:590
310589910328,70cyclictest15350irq/295-2188000.ethernet10:57:070
31058991024,88cyclictest2095-21apt-get11:37:080
31058991023,66cyclictest0-21swapper/010:05:330
31058991023,66cyclictest0-21swapper/010:05:330
310589910223,72cyclictest0-21swapper/009:44:110
31064991012,31cyclictest19122-21taskset10:17:541
310589910117,51cyclictest0-21swapper/009:27:060
310649910058,34cyclictest0-21swapper/110:26:591
310589910036,57cyclictest0-21swapper/010:52:340
310589910035,58cyclictest0-21swapper/007:07:340
310589910016,75cyclictest20643-21latency_hist09:26:580
31064999952,40cyclictest32277-21processes11:32:291
31064999940,52cyclictest30544-21sh09:42:301
3105899983,83cyclictest0-21swapper/009:17:130
3105899983,83cyclictest0-21swapper/009:17:130
3105899983,72cyclictest17434-21df07:58:100
31058999836,52cyclictest0-21swapper/007:47:290
31058999836,52cyclictest0-21swapper/007:47:290
3105899983,61cyclictest22560-21find11:17:040
31058999831,57cyclictest0-21swapper/008:47:180
31058999831,57cyclictest0-21swapper/008:47:180
31064999631,11cyclictest0-21swapper/108:41:571
31058999637,53cyclictest15386-21ssh11:58:080
3105899962,76cyclictest5508-21diskmemload12:27:150
3106499955,46cyclictest24642-21switchtime09:32:311
31064999523,15cyclictest0-21swapper/112:12:201
3105899953,85cyclictest5508-21diskmemload09:12:080
3105899953,57cyclictest25104-21rm12:15:100
31058999530,58cyclictest0-21swapper/011:42:310
31058999530,58cyclictest0-21swapper/011:42:310
3105899952,77cyclictest21980-21sshd11:16:100
3105899952,77cyclictest21980-21sshd11:16:100
31066999448,40cyclictest31708-21latency_hist12:26:582
31066999448,40cyclictest31708-21latency_hist12:26:582
31064999434,12cyclictest0-21swapper/107:56:591
31064999434,12cyclictest0-21swapper/107:56:591
3105899944,82cyclictest309-21apt-get09:47:070
31058999437,49cyclictest0-21swapper/009:52:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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