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2025-05-02 - 12:36
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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 rackdslot1.osadl.org (updated Fri May 02, 2025 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191740,12ptp4l15794-21apt-get19:05:142
242542720,5sleep10-21swapper/100:00:201
18129997210,22cyclictest1834-21phc2sys00:20:260
1812999671,7cyclictest20590-21dump-pmu-power21:35:000
1812999671,7cyclictest20590-21dump-pmu-power21:35:000
18131996431,3cyclictest33-21ksoftirqd/222:30:192
18131996431,3cyclictest33-21ksoftirqd/222:30:192
18131996329,9cyclictest33-21ksoftirqd/222:20:002
2847191620,5ptp4l31648-21sed00:15:213
2847191620,3ptp4l18555-21cstates20:20:173
2847191610,4ptp4l0-21swapper/321:10:213
2847191610,4ptp4l0-21swapper/023:14:360
2847191610,3ptp4l17527-21ntp_states22:35:242
2847191600,4ptp4l0-21swapper/000:16:530
2847191590,4ptp4l0-21swapper/321:43:363
2847191590,3ptp4l0-21swapper/321:21:233
2847191580,4ptp4l0-21swapper/020:24:300
2847191580,3ptp4l0-21swapper/323:30:233
2847191580,3ptp4l0-21swapper/323:13:193
2847191570,4ptp4l0-21swapper/321:48:523
2847191570,4ptp4l0-21swapper/320:45:523
2847191570,4ptp4l0-21swapper/300:10:233
2847191570,4ptp4l0-21swapper/023:58:150
2847191560,4ptp4l0-21swapper/322:32:583
2847191560,4ptp4l0-21swapper/322:32:583
2847191560,4ptp4l0-21swapper/322:00:163
2847191560,4ptp4l0-21swapper/322:00:163
2847191560,4ptp4l0-21swapper/320:27:573
2847191560,4ptp4l0-21swapper/320:27:573
2847191560,3ptp4l0-21swapper/319:30:313
2847191550,4ptp4l4545-21taskset23:19:263
2847191550,4ptp4l0-21swapper/319:28:413
2847191550,4ptp4l0-21swapper/223:57:532
2847191550,3ptp4l0-21swapper/300:30:213
18131995526,5cyclictest33-21ksoftirqd/223:20:212
2847191540,4ptp4l0-21swapper/223:37:152
2847191540,4ptp4l0-21swapper/223:37:152
2847191540,4ptp4l0-21swapper/223:08:172
2847191540,4ptp4l0-21swapper/223:08:172
2847191540,3ptp4l0-21swapper/222:20:292
18131995422,7cyclictest33-21ksoftirqd/221:25:262
1813099540,2cyclictest14044-21df_inode20:10:181
2847191530,4ptp4l0-21swapper/323:49:443
2847191530,4ptp4l0-21swapper/321:30:583
2847191530,4ptp4l0-21swapper/321:30:583
2847191530,4ptp4l0-21swapper/300:21:353
2847191530,4ptp4l0-21swapper/300:09:043
2847191530,4ptp4l0-21swapper/300:00:213
2847191530,4ptp4l0-21swapper/222:12:492
2847191530,3ptp4l0-21swapper/322:40:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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