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2026-05-23 - 22:44
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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 Sat May 23, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1280521327,17sleep00-21swapper/006:57:410
1280521327,17sleep00-21swapper/006:57:410
12276210715,54sleep212325-21awk06:56:162
12276210715,54sleep212325-21awk06:56:162
1319699973,42cyclictest25125-21ssh11:50:492
1319699973,42cyclictest25125-21ssh11:50:492
1319199943,37cyclictest15593-21/usr/sbin/munin10:41:111
13196999244,42cyclictest8238-21timerwakeupswit08:21:122
13196999244,41cyclictest18699-21latency_hist08:55:392
1319199923,33cyclictest3418-21ssh10:20:371
13200999111,70cyclictest5828-21chrt08:16:023
13191999036,47cyclictest0-21swapper/109:21:021
13187999065,9cyclictest181rcu_preempt08:56:030
13187999065,9cyclictest181rcu_preempt08:56:030
1319199894,43cyclictest8915-21apt-get09:35:481
1319199894,35cyclictest29992-21ntpq09:16:051
1319199892,37cyclictest5862-21unixbench_multi12:11:121
13187998968,15cyclictest18422-21latency_hist07:15:370
13196998859,21cyclictest10941-21switchtime11:26:102
13196998859,21cyclictest10941-21switchtime11:26:102
13196998844,37cyclictest0-21swapper/209:06:122
1319699883,39cyclictest17921-21runrttasks09:50:502
1319199883,34cyclictest27587-21/usr/sbin/munin11:01:071
13191998832,49cyclictest0-21swapper/111:56:131
1319199882,35cyclictest29331-21latency_hist09:15:391
13187998865,17cyclictest8838-21latency_hist08:25:370
13196998739,40cyclictest22585-21switchtime07:26:162
13196998739,40cyclictest22585-21switchtime07:26:162
1319699873,41cyclictest6338-21ssh10:25:362
1319699872,30cyclictest30958-21taskset07:51:292
1319199874,36cyclictest31422-21/usr/sbin/munin12:00:501
1319199874,28cyclictest7504-21timerandwakeup10:26:141
1319199874,28cyclictest7504-21timerandwakeup10:26:141
1319199873,34cyclictest25047-21latency_hist07:35:381
1319199873,34cyclictest25047-21latency_hist07:35:381
1319199873,34cyclictest2219-21latency_hist08:05:381
1319199873,34cyclictest2219-21latency_hist08:05:381
1319199873,34cyclictest18907-21fschecks_count08:55:561
1319199873,34cyclictest18907-21fschecks_count08:55:561
1319199873,33cyclictest3114-21grep08:06:101
1319199873,31cyclictest352-21runrttasks12:27:431
1319199872,33cyclictest31757-21/usr/sbin/munin07:55:581
1319199872,32cyclictest20634-21ssh09:00:581
13191998721,21cyclictest10738-21sh11:26:061
13191998721,21cyclictest10738-21sh11:26:061
1319699869,64cyclictest5808-21apt-get08:16:022
13196998659,17cyclictest544-21cron07:15:392
13196998643,36cyclictest0-21swapper/207:05:352
13196998643,36cyclictest0-21swapper/207:05:352
1319699863,6cyclictest0-21swapper/207:45:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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