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2025-12-27 - 17:31
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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 rackdslot1.osadl.org (updated Sat Dec 27, 2025 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14962996627,8cyclictest25-21ksoftirqd/108:35:111
14962996429,8cyclictest25-21ksoftirqd/109:30:241
14962996336,3cyclictest25-21ksoftirqd/110:55:191
14962996324,7cyclictest25-21ksoftirqd/107:50:281
1496399625,16cyclictest17567-21df_abs07:15:152
134491620,3ptp4l0-21swapper/310:54:073
1496399617,9cyclictest493-21sendmail_mailqu11:15:272
1496399615,15cyclictest4378-21/usr/sbin/munin10:15:172
1496399615,15cyclictest4378-21/usr/sbin/munin10:15:172
14963996112,11cyclictest4696-21grep09:05:212
14962996130,8cyclictest25-21ksoftirqd/112:10:171
14962996129,4cyclictest25-21ksoftirqd/109:45:151
14962996117,8cyclictest25-21ksoftirqd/112:05:241
134491610,5ptp4l0-21swapper/112:30:211
14962996032,4cyclictest25-21ksoftirqd/110:00:111
14962996032,4cyclictest25-21ksoftirqd/109:10:241
1496399596,10cyclictest7385-21ntp_states10:20:262
14962995927,4cyclictest25-21ksoftirqd/110:35:221
134491590,5ptp4l0-21swapper/207:08:072
134491590,5ptp4l0-21swapper/112:15:161
1496399586,9cyclictest1950-21df12:30:142
1496399584,16cyclictest2318-21gnome-shell11:30:242
1496399584,15cyclictest23549-21/usr/sbin/munin10:55:242
1496399583,8cyclictest22243-21cat09:45:002
14962995829,9cyclictest25-21ksoftirqd/112:35:211
14962995829,9cyclictest25-21ksoftirqd/112:35:211
1496399577,10cyclictest18017-21grep11:55:132
14962995731,7cyclictest25-21ksoftirqd/109:40:171
14962995729,3cyclictest25-21ksoftirqd/109:50:251
14962995725,6cyclictest25-21ksoftirqd/112:00:141
14962995724,7cyclictest25-21ksoftirqd/110:40:131
14962995724,11cyclictest25-21ksoftirqd/110:54:591
14962995722,7cyclictest25-21ksoftirqd/110:25:501
1496399565,16cyclictest0-21swapper/211:25:292
1496399565,10cyclictest21709-21cat12:00:272
1496399564,17cyclictest0-21swapper/210:35:172
1496399563,8cyclictest863-21unixbench_multi10:05:292
1496399563,17cyclictest0-21swapper/207:20:152
14962995633,3cyclictest25-21ksoftirqd/111:55:261
14962995631,3cyclictest25-21ksoftirqd/111:35:001
14962995627,8cyclictest25-21ksoftirqd/111:50:151
14962995625,7cyclictest25-21ksoftirqd/107:10:151
14962995623,7cyclictest25-21ksoftirqd/111:20:241
14962995623,3cyclictest25-21ksoftirqd/112:30:001
134491560,3ptp4l0-21swapper/107:25:411
134491560,3ptp4l0-21swapper/107:15:171
14962995525,7cyclictest25-21ksoftirqd/111:20:001
14962995522,7cyclictest25-21ksoftirqd/111:35:171
14961995513,26cyclictest15169-21seq10:39:340
134491550,3ptp4l0-21swapper/007:40:160
1496399547,7cyclictest0-21swapper/208:10:212
1496399547,7cyclictest0-21swapper/208:10:212
1496399546,45cyclictest126402sleep209:23:302
14962995427,8cyclictest25-21ksoftirqd/111:00:251
134491540,4ptp4l0-21swapper/008:35:280
134491540,3ptp4l0-21swapper/308:04:233
1496399535,15cyclictest25136-21df_abs12:10:142
1496399530,10cyclictest0-21swapper/207:30:132
14962995328,7cyclictest25-21ksoftirqd/110:30:261
14962995326,6cyclictest25-21ksoftirqd/108:59:591
14962995320,3cyclictest25-21ksoftirqd/108:20:161
134491530,4ptp4l0-21swapper/007:15:220
134491530,3ptp4l0-21swapper/012:30:130
1496399523,12cyclictest22883-21sed07:25:192
1496299523,7cyclictest25-21ksoftirqd/111:15:001
14962995225,8cyclictest25-21ksoftirqd/108:40:201
14962995221,7cyclictest25-21ksoftirqd/109:05:171
14962995220,7cyclictest25-21ksoftirqd/107:20:141
14962995220,3cyclictest25-21ksoftirqd/111:40:161
14962995218,8cyclictest25-21ksoftirqd/111:25:271
14962995217,8cyclictest25-21ksoftirqd/110:15:241
14962995217,8cyclictest25-21ksoftirqd/110:15:241
1496299521,6cyclictest25-21ksoftirqd/110:15:001
14962995216,7cyclictest25-21ksoftirqd/107:55:251
134491520,5ptp4l0-21swapper/307:06:073
134491520,11ptp4l0-21swapper/009:50:040
1496399514,8cyclictest26868-21apt-get09:55:132
1496399511,16cyclictest23273-21missed_timers09:45:222
14962995126,6cyclictest25-21ksoftirqd/107:35:241
14962995121,7cyclictest25-21ksoftirqd/109:20:161
14962995119,6cyclictest25-21ksoftirqd/110:20:221
14962995119,6cyclictest25-21ksoftirqd/109:55:271
134491510,10ptp4l0-21swapper/011:56:210
1496399509,11cyclictest14148-21awk09:25:222
1496399503,8cyclictest30559-21ls12:20:242
1496399503,10cyclictest609-21proc_pri12:25:242
1496299506,7cyclictest25-21ksoftirqd/112:20:271
14962995022,3cyclictest25-21ksoftirqd/110:48:201
134491500,18ptp4l9-21ksoftirqd/011:24:090
1496399495,18cyclictest31054-21sed07:44:592
1496399494,7cyclictest22628-21apt-get12:05:142
134491490,3ptp4l0-21swapper/111:45:321
1496399489,13cyclictest1301-21snmpd08:30:112
1496399485,9cyclictest3006-21/usr/sbin/munin10:10:262
1496399484,7cyclictest11980-21ntp_states10:30:242
1496299484,5cyclictest25-21ksoftirqd/107:35:001
1496299483,7cyclictest25-21ksoftirqd/109:15:241
14962994818,8cyclictest25-21ksoftirqd/108:35:011
1496299481,3cyclictest25-21ksoftirqd/108:25:161
1496399474,7cyclictest12626-21apt-get08:15:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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