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2026-07-29 - 10:07
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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 Wed Jul 29, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31665215713,94sleep231712-21cstates18:51:212
640991202,33cyclictest25505-21mailstats23:11:370
640991183,37cyclictest26604-21latency_hist22:21:060
6409911440,11cyclictest0-21swapper/019:26:390
640991142,43cyclictest1401-21cmp23:26:070
640991142,43cyclictest1401-21cmp23:26:070
2734821130,7sleep1618-21cyclictest20:16:251
6509911132,33cyclictest181rcu_preempt23:06:501
6409911139,19cyclictest31007-21grep22:26:400
640991103,39cyclictest28471-21/usr/sbin/munin00:11:290
640991103,39cyclictest28471-21/usr/sbin/munin00:11:290
3273721106,15sleep00-21swapper/018:53:270
6409910936,11cyclictest0-21swapper/023:41:060
6409910936,11cyclictest0-21swapper/023:41:060
6409910915,11cyclictest0-21swapper/021:26:390
640991073,31cyclictest16859-21ssh21:11:040
640991073,26cyclictest7986-21fschecks_time19:16:250
6409910642,14cyclictest31465-21/usr/sbin/munin00:16:240
6409910638,9cyclictest0-21swapper/023:55:260
6409910638,9cyclictest0-21swapper/023:55:260
640991063,38cyclictest11613-21modprobe21:56:030
640991063,38cyclictest11613-21modprobe21:56:030
640991063,29cyclictest14184-21/usr/sbin/munin23:46:360
6409910539,16cyclictest21823-21timerandwakeup22:11:370
640991053,39cyclictest2958-21/usr/sbin/munin20:42:440
640991053,37cyclictest20945-21tune2fs19:56:260
6409910533,12cyclictest0-21swapper/021:46:370
6409910516,34cyclictest28294-21sshd23:16:310
650991044,71cyclictest1854-21df23:26:471
650991044,71cyclictest1854-21df23:26:471
640991044,37cyclictest1671-21runrttasks21:38:300
6409910433,11cyclictest0-21swapper/000:10:080
6409910417,33cyclictest15558-21munin-run19:41:040
6409910417,33cyclictest15558-21munin-run19:41:040
6409910334,9cyclictest0-21swapper/020:57:030
640991033,44cyclictest11788-21/usr/sbin/munin21:01:380
640991033,38cyclictest12776-21fschecks_count22:51:270
640991033,37cyclictest6768-21grep19:11:370
640991033,33cyclictest5782-21latency_hist21:46:070
640991033,24cyclictest22188-21cpuspeed23:07:180
3263721035,14sleep10-21swapper/118:52:101
6409910237,12cyclictest352-21runrttasks18:56:410
6409910237,12cyclictest352-21runrttasks18:56:410
640991023,36cyclictest1417-21fschecks_time20:36:330
640991023,36cyclictest1417-21fschecks_time20:36:330
640991023,34cyclictest352-21runrttasks21:16:140
640991023,33cyclictest21496-21gpgv23:06:060
6409910220,28cyclictest3600-21switchtime19:01:410
2455221020,7sleep30-21swapper/323:11:053
640991013,40cyclictest352-21runrttasks22:06:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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