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2026-05-03 - 14:35
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Sun May 03, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
153839911055,48cyclictest11979-21sh21:35:151
15373991043,77cyclictest15655-21apt-get19:02:520
15373991012,68cyclictest22495-21apt-get22:47:120
1392729926,40sleep10-21swapper/118:57:231
15395999710,68cyclictest0-21swapper/222:47:142
140522979,58sleep014092-21if_eth018:57:260
15395999642,46cyclictest0-21swapper/221:07:012
15395999642,46cyclictest0-21swapper/221:07:012
1539599963,36cyclictest31518-21fschecks_time22:07:212
15373999646,33cyclictest4129-21threads00:02:330
15373999646,33cyclictest4129-21threads00:02:330
1537399943,82cyclictest25235-21taskset21:57:130
1537399943,82cyclictest25235-21taskset21:57:130
15395999366,18cyclictest6481-21apt-key21:27:002
1539599933,35cyclictest22213-21ssh21:52:192
1539599933,29cyclictest27807-21latency_hist19:37:012
1539599922,36cyclictest30471-21ntp_kernel_pll_21:12:252
15373999263,21cyclictest1636-21latency_hist22:12:010
1539599914,29cyclictest24505-21/usr/sbin/munin23:42:332
15395999138,45cyclictest0-21swapper/223:32:332
1539599913,34cyclictest12293-21open_inodes23:22:292
1539599913,33cyclictest15646-21find19:02:082
1539599904,29cyclictest14179-21fschecks_time20:33:252
1539599904,29cyclictest14179-21fschecks_time20:33:252
1539599904,29cyclictest14179-21fschecks_time20:33:252
1539599903,35cyclictest19485-21apt22:41:572
15395999033,49cyclictest0-21swapper/221:17:162
1539599903,31cyclictest14043-21ssh21:37:362
15395999025,55cyclictest0-21swapper/221:27:082
1539599902,26cyclictest835-21/usr/sbin/munin23:57:262
15383999070,14cyclictest7061-21switchtime00:07:321
15373999067,15cyclictest1131-21ssh23:57:330
1537399903,71cyclictest5533-21apt-get20:07:220
1537399903,71cyclictest5533-21apt-get20:07:220
1539599894,33cyclictest29032-21/usr/sbin/munin22:57:322
15395998937,43cyclictest0-21swapper/222:32:232
1539599893,35cyclictest5966-21idleruntime-cro00:06:562
1539599893,35cyclictest5966-21idleruntime-cro00:06:562
1539599893,35cyclictest18596-21latency_hist20:47:002
1539599893,32cyclictest12622-21fschecks_time00:17:202
15395998930,50cyclictest0-21swapper/221:42:232
15395998867,15cyclictest11773-21latency_hist20:26:592
15395998865,15cyclictest14950-21fschecks_time23:27:202
1539599883,36cyclictest27281-21runrttasks21:07:532
1539599883,36cyclictest27281-21runrttasks21:07:532
1539599883,35cyclictest2283-21grep19:57:192
1539599883,34cyclictest978-21ntpq19:52:262
1539599883,31cyclictest19207-21ntpq20:47:252
1539599883,31cyclictest16369-21wc20:37:542
15395998820,19cyclictest10655-21readlink21:32:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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