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2025-11-29 - 05:25
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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 Nov 29, 2025 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31259991039,81cyclictest24379-21dpkg23:29:241
31259991032,37cyclictest355-21runrttasks22:49:091
815921020,9sleep20-21swapper/219:34:282
815921020,9sleep20-21swapper/219:34:282
29794210114,41sleep10-21swapper/119:04:161
31259999819,32cyclictest1021-21load21:54:211
31259999819,32cyclictest1021-21load21:54:211
31259999734,8cyclictest0-21swapper/120:09:321
31259999734,8cyclictest0-21swapper/120:09:321
31259999634,14cyclictest0-21swapper/100:24:091
31259999634,14cyclictest0-21swapper/100:24:091
31259999537,10cyclictest0-21swapper/122:44:161
3125999944,35cyclictest27180-21/usr/sbin/munin23:34:251
3125999944,35cyclictest27180-21/usr/sbin/munin23:34:251
3125999943,34cyclictest30314-21/usr/sbin/munin20:44:081
31259999431,8cyclictest0-21swapper/122:59:331
31259999430,13cyclictest0-21swapper/119:14:321
3125999942,35cyclictest27805-21grep20:34:341
3125999933,35cyclictest12205-21/usr/sbin/munin00:04:321
3125999933,33cyclictest25695-21rm21:40:481
3125999933,33cyclictest25695-21rm21:40:481
3125999933,32cyclictest7419-21unixbench_multi23:54:321
31259999329,9cyclictest0-21swapper/122:39:321
31259999329,9cyclictest0-21swapper/122:39:321
31259999325,17cyclictest0-21swapper/121:38:581
3125999932,35cyclictest9288-21grep19:39:151
3125999924,41cyclictest30112-21/usr/sbin/munin23:39:291
31259999239,45cyclictest0-21swapper/119:59:121
3125999923,42cyclictest24031-21latency20:24:211
3125999923,36cyclictest21596-21fschecks_count22:29:171
3125999923,34cyclictest13259-21unixbench_multi19:49:381
3125999923,33cyclictest7658-21/usr/sbin/munin22:04:461
3125999923,33cyclictest15526-21wc21:24:281
31259999230,13cyclictest0-21swapper/122:13:581
31259999229,15cyclictest0-21swapper/122:19:101
31259999229,15cyclictest0-21swapper/122:19:101
3125999922,33cyclictest12177-21fschecks_count21:19:171
31259999215,33cyclictest29524-21cut00:34:201
31259999146,37cyclictest18242-21cpuspeed21:29:351
3125999913,36cyclictest18344-21cstates23:19:141
3125999913,36cyclictest18344-21cstates23:19:141
3125999913,35cyclictest25509-21grep20:29:201
3125999913,35cyclictest21677-21mailstats00:19:311
3125999913,32cyclictest5694-21latency_hist19:28:581
3125999913,30cyclictest18302-21grep00:14:181
3125999912,39cyclictest13584-21grep22:14:371
3125999912,39cyclictest13584-21grep22:14:371
3125999912,36cyclictest891-21latency_hist20:53:581
3125999912,34cyclictest4564-21fschecks_count21:04:171
3125999912,34cyclictest318-21/usr/sbin/munin19:13:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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