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2025-06-17 - 01:57
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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
Characteristics of the 50 highest latencies:
System rackdslot3.osadl.org (updated Mon Jun 16, 2025 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137191234171,51phc2sys0-21swapper/307:08:373
271952207173,23sleep20-21swapper/207:09:412
271942206173,22sleep10-21swapper/107:09:401
270492202167,23sleep00-21swapper/007:07:470
2572621500,7sleep32751699cyclictest10:25:223
121972760,5sleep125-21ksoftirqd/111:05:201
119282650,4sleep211931-21fschecks_time11:05:172
27516996014,18cyclictest4544-21sed11:55:293
2751699522,3cyclictest17116-21taskset10:09:043
153632500,4sleep2311rcuc/212:20:152
27516994528,15cyclictest41-21ksoftirqd/310:18:583
2751599431,39cyclictest5179-21cron12:00:012
136991430,0ptp4l401ktimersoftd/308:48:523
136991430,0ptp4l401ktimersoftd/307:15:223
27514994212,28cyclictest0-21swapper/109:41:161
136991420,0ptp4l401ktimersoftd/307:51:183
132891420,4getstats2751699cyclictest09:33:123
27513994136,3cyclictest9-21ksoftirqd/010:20:010
136991410,0ptp4l401ktimersoftd/312:05:453
136991400,0ptp4l401ktimersoftd/311:26:103
27516993934,3cyclictest41-21ksoftirqd/310:35:013
27514993933,4cyclictest25-21ksoftirqd/112:15:001
2751699387,20cyclictest20934-21kworker/3:211:50:353
27515993823,13cyclictest33-21ksoftirqd/210:10:012
27514993831,4cyclictest25-21ksoftirqd/107:59:591
27516993731,4cyclictest41-21ksoftirqd/309:56:423
27516993731,4cyclictest41-21ksoftirqd/308:34:293
27515993732,3cyclictest33-21ksoftirqd/208:40:002
27514993714,20cyclictest17180-21sed09:00:311
27513993732,3cyclictest9-21ksoftirqd/007:55:010
2751699362,23cyclictest20934-21kworker/3:212:03:553
27515993630,4cyclictest33-21ksoftirqd/207:41:052
27514993630,4cyclictest25-21ksoftirqd/111:28:361
27514993630,4cyclictest25-21ksoftirqd/110:25:361
27513993631,3cyclictest9-21ksoftirqd/010:10:000
59298350,3rtkit-daemon1285-21snmpd09:47:550
2751699355,19cyclictest20997-21kworker/3:008:19:283
27516993530,3cyclictest41-21ksoftirqd/307:14:593
27515993529,4cyclictest33-21ksoftirqd/212:14:012
27515993529,4cyclictest33-21ksoftirqd/211:12:592
27515993529,4cyclictest33-21ksoftirqd/209:50:512
27515993529,4cyclictest33-21ksoftirqd/207:38:282
27515993522,11cyclictest33-21ksoftirqd/209:45:512
27514993529,4cyclictest25-21ksoftirqd/110:36:161
27514993529,4cyclictest25-21ksoftirqd/108:44:231
27514993529,4cyclictest25-21ksoftirqd/108:17:561
27514993529,4cyclictest25-21ksoftirqd/107:21:181
27514993528,5cyclictest25-21ksoftirqd/107:17:011
27514993512,21cyclictest19364-21kworker/1:012:15:471
27513993530,3cyclictest9-21ksoftirqd/009:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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