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2025-12-26 - 12:20
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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 100 highest latencies:
System rackdslot3.osadl.org (updated Fri Dec 26, 2025 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
252852206173,22sleep00-21swapper/019:08:390
252832204170,23sleep30-21swapper/319:08:373
251642203171,21sleep10-21swapper/119:07:101
252872202169,22sleep20-21swapper/219:08:402
253912167129,13sleep20-21swapper/219:10:002
2568599635,16cyclictest27165-21sed19:10:243
264062590,4sleep026412-21irqrtprio19:10:170
2568599592,18cyclictest9961-21cstates23:05:153
2568599583,15cyclictest30149-21sendmail_mailst23:45:283
2568599583,15cyclictest13535-21awk23:10:283
2568599535,12cyclictest31402-21sed20:25:273
139391520,1ptp4l391rcuc/322:07:483
139391520,1ptp4l391rcuc/322:07:473
2568599512,16cyclictest0-21swapper/319:55:163
2568599505,18cyclictest25435-21grep23:35:253
206732500,2sleep10-21swapper/121:10:291
2568599494,14cyclictest4771-21/usr/sbin/munin22:55:273
2568599484,10cyclictest3758-21cut19:30:183
2568599483,7cyclictest13478-21apt-get00:20:133
2568599464,8cyclictest28663-21meminfo22:35:213
2568599464,7cyclictest28647-21apt-get21:30:133
2568599462,7cyclictest9391-21apt-get20:50:133
2568599461,9cyclictest28938-21ls20:20:263
139391460,1ptp4l4745-21latency_hist22:55:003
139391450,0ptp4l401ktimersoftd/300:25:313
2568599446,7cyclictest21607-21meminfo00:35:233
2568599443,16cyclictest12245-21ls22:00:273
139391440,0ptp4l401ktimersoftd/319:46:403
2568599434,8cyclictest9346-21if_err_enp4s000:10:203
2568599434,16cyclictest7817-21/usr/sbin/munin19:40:253
2568599433,16cyclictest1106-21apt-get23:55:123
2568399433,3cyclictest121rcu_preempt22:30:001
2568599424,16cyclictest24219-21awk20:10:283
2568599421,9cyclictest18026-21ps21:05:233
2568599421,7cyclictest27918-21ls23:40:263
25684994229,2cyclictest33-21ksoftirqd/223:10:012
25683994236,3cyclictest25-21ksoftirqd/123:20:001
2568599413,6cyclictest25930-21ls20:15:233
2568599412,7cyclictest12673-21apt-config19:50:003
25683994035,3cyclictest25-21ksoftirqd/120:40:001
2568599394,8cyclictest7185-21ps00:05:273
2568599394,13cyclictest8045-21ls20:45:243
25683993934,3cyclictest25-21ksoftirqd/100:30:001
57898380,1rtkit-daemon0-21swapper/120:52:271
25683993834,2cyclictest25-21ksoftirqd/123:40:011
25683993833,3cyclictest25-21ksoftirqd/122:55:001
25683993833,3cyclictest25-21ksoftirqd/120:20:001
25682993832,3cyclictest26157-21cron23:40:010
139391380,0ptp4l401ktimersoftd/323:20:193
2568599372,15cyclictest1300-21snmpd19:21:393
2568599370,14cyclictest0-21swapper/300:02:523
25683993733,2cyclictest25-21ksoftirqd/122:50:001
25683993733,2cyclictest25-21ksoftirqd/100:40:001
25683993732,3cyclictest25-21ksoftirqd/123:25:001
25683993732,3cyclictest25-21ksoftirqd/122:25:001
25683993731,4cyclictest25-21ksoftirqd/121:23:411
25683993731,3cyclictest25-21ksoftirqd/123:00:001
25683993731,3cyclictest25-21ksoftirqd/122:45:011
25683993730,3cyclictest25-21ksoftirqd/119:50:001
25682993731,3cyclictest9-21ksoftirqd/000:29:590
25684993630,3cyclictest33-21ksoftirqd/220:30:002
25684993629,4cyclictest33-21ksoftirqd/221:29:592
25683993631,3cyclictest25-21ksoftirqd/121:44:181
25683993630,4cyclictest5219-21basename19:35:011
25683993630,4cyclictest25-21ksoftirqd/120:59:381
25683993630,4cyclictest25-21ksoftirqd/119:51:111
25683993630,4cyclictest25-21ksoftirqd/100:17:391
25683993630,3cyclictest25-21ksoftirqd/121:55:191
25683993629,4cyclictest25-21ksoftirqd/123:55:001
25682993629,4cyclictest9-21ksoftirqd/023:27:590
25685993530,3cyclictest41-21ksoftirqd/322:10:133
25685993529,4cyclictest41-21ksoftirqd/321:49:103
25685993529,4cyclictest41-21ksoftirqd/320:33:243
25684993530,3cyclictest33-21ksoftirqd/223:35:012
25684993530,3cyclictest33-21ksoftirqd/221:05:112
25684993529,4cyclictest33-21ksoftirqd/223:27:222
25684993529,4cyclictest33-21ksoftirqd/222:58:212
25684993529,3cyclictest33-21ksoftirqd/219:35:162
2568399358,4cyclictest25-21ksoftirqd/123:05:251
2568399356,6cyclictest25-21ksoftirqd/100:10:001
25683993531,3cyclictest25-21ksoftirqd/121:10:001
25683993531,3cyclictest25-21ksoftirqd/100:00:001
25683993531,2cyclictest25-21ksoftirqd/123:40:281
25683993531,2cyclictest25-21ksoftirqd/100:10:211
25683993530,3cyclictest25-21ksoftirqd/122:05:001
25683993530,3cyclictest25-21ksoftirqd/120:15:001
25683993530,3cyclictest25-21ksoftirqd/120:00:001
25683993529,4cyclictest25-21ksoftirqd/121:19:111
25683993529,4cyclictest25-21ksoftirqd/120:28:131
25683993529,4cyclictest25-21ksoftirqd/120:01:171
25683993528,5cyclictest25-21ksoftirqd/120:24:201
25683993528,4cyclictest25-21ksoftirqd/122:30:081
25683993528,4cyclictest25-21ksoftirqd/122:30:071
25682993529,3cyclictest9-21ksoftirqd/000:10:010
25685993428,4cyclictest41-21ksoftirqd/321:18:173
25685993428,4cyclictest41-21ksoftirqd/321:00:483
25684993430,2cyclictest33-21ksoftirqd/223:20:002
25684993429,3cyclictest33-21ksoftirqd/222:01:132
25684993429,3cyclictest33-21ksoftirqd/220:10:332
25684993429,3cyclictest33-21ksoftirqd/220:05:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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