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2025-12-14 - 21:04
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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 Sun Dec 14, 2025 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491213179,22phc2sys0-21swapper/307:05:393
127782210177,22sleep20-21swapper/207:06:052
127772209176,22sleep10-21swapper/107:06:031
128732203171,22sleep00-21swapper/007:07:190
1393911050,82ptp4l0-21swapper/307:10:003
139391830,1ptp4l391rcuc/307:50:383
109342830,6sleep11338199cyclictest11:35:001
247272760,5sleep11338199cyclictest10:55:301
139391630,1ptp4l9549-21open_files09:15:353
106062630,6sleep01338099cyclictest09:20:000
315332600,2sleep20-21swapper/207:45:362
1338399579,9cyclictest5296-21cat12:30:253
1338399568,14cyclictest19751-21taskset09:37:033
1338399558,17cyclictest0-21swapper/311:10:353
139391540,1ptp4l391rcuc/310:16:213
1338399529,15cyclictest24065-21/usr/sbin/munin08:40:273
1338199510,49cyclictest0-21swapper/111:51:331
1338399500,15cyclictest25405-21apt-get12:05:273
1338399499,13cyclictest10743-21sshd09:20:103
1338399498,14cyclictest1300-21snmpd09:44:033
1338399470,16cyclictest20512-21mailstats08:30:353
139391450,0ptp4l401ktimersoftd/309:47:533
1338399438,13cyclictest1300-21snmpd10:44:153
139391420,0ptp4l401ktimersoftd/307:35:303
13381994224,15cyclictest25-21ksoftirqd/109:35:241
139391410,0ptp4l401ktimersoftd/307:20:073
13383994136,3cyclictest14226-21cron10:34:593
1338399401,37cyclictest10879-21cron11:35:003
139391390,0ptp4l401ktimersoftd/312:19:593
1338399398,14cyclictest1300-21snmpd07:58:423
1338199390,38cyclictest0-21swapper/107:45:531
13380993934,3cyclictest23762-21cron10:55:010
13381993831,4cyclictest27403-21latency_hist07:40:011
13382993630,4cyclictest33-21ksoftirqd/208:44:442
13382993629,4cyclictest33-21ksoftirqd/211:52:102
13382993629,4cyclictest33-21ksoftirqd/209:54:332
13382993629,4cyclictest33-21ksoftirqd/209:39:082
13381993631,3cyclictest25-21ksoftirqd/107:55:241
13381993630,4cyclictest25-21ksoftirqd/112:07:581
13381993630,4cyclictest25-21ksoftirqd/111:44:421
13381993630,4cyclictest25-21ksoftirqd/107:30:231
13380993629,4cyclictest9-21ksoftirqd/008:50:000
57898350,2rtkit-daemon0-21swapper/012:35:360
13383993529,3cyclictest41-21ksoftirqd/310:58:593
13383993528,4cyclictest41-21ksoftirqd/309:30:063
13382993529,4cyclictest33-21ksoftirqd/209:03:152
13382993529,4cyclictest33-21ksoftirqd/208:58:162
13382993529,3cyclictest28799-21anacron11:03:152
13382993528,4cyclictest33-21ksoftirqd/209:07:232
13381993529,4cyclictest25-21ksoftirqd/109:51:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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