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2026-03-22 - 07:36
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Sun Mar 22, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1994421250,6sleep11845799cyclictest19:10:281
18457997712,63cyclictest20933-21kworker/1:121:55:291
1845799770,33cyclictest12403-21/usr/sbin/munin23:35:171
48572760,2sleep34862-21cpuspeed_turbos21:00:143
1845799710,29cyclictest9394-21seq00:35:561
1845799710,29cyclictest27291-21seq19:28:081
1845799670,29cyclictest13918-21taskset22:28:341
134491670,4ptp4l11984-21diskstats20:05:162
267722660,6sleep21845899cyclictest21:45:252
1845799661,24cyclictest20768-21/usr/sbin/munin19:15:251
1845799660,30cyclictest20949-21taskset22:44:191
1845799660,28cyclictest31734-21taskset19:36:171
271382650,6sleep10-21swapper/120:35:271
1845799650,27cyclictest4436-21runrttasks23:15:571
1845799640,29cyclictest27227-21taskset21:46:101
1845799640,29cyclictest2224-21seq23:12:401
1845799640,29cyclictest18026-21seq20:15:461
1845799640,29cyclictest1746-21seq20:50:441
1845799640,23cyclictest22716-21mailstats23:55:251
134491640,4ptp4l0-21swapper/220:10:242
1845799630,28cyclictest18282-21seq21:29:311
1845799620,29cyclictest4583-21seq22:09:421
1845799620,25cyclictest19083-21hwlatdetect20:20:161
1845799610,28cyclictest16111-21seq22:31:401
1845799610,26cyclictest6650-21chrt22:11:511
134491600,4ptp4l0-21swapper/100:30:181
134491600,4ptp4l0-21swapper/021:38:420
1845799590,28cyclictest4209-21chrt19:48:511
1845799590,27cyclictest23691-21taskset00:00:011
1845799590,26cyclictest13385-21chrt21:16:441
134491590,3ptp4l0-21swapper/221:57:102
85892580,5sleep00-21swapper/023:25:240
134491580,3ptp4l0-21swapper/222:15:282
1845799572,23cyclictest0-21swapper/100:22:091
134491570,4ptp4l0-21swapper/219:20:142
1845799560,34cyclictest15867-21runrttasks21:23:011
1845799560,34cyclictest15867-21runrttasks21:23:011
134491560,4ptp4l0-21swapper/220:46:572
134491560,3ptp4l0-21swapper/223:10:252
134491540,4ptp4l0-21swapper/319:05:123
134491540,2ptp4l9-21ksoftirqd/020:19:180
134491540,14ptp4l0-21swapper/220:25:102
1845799530,25cyclictest20996-21awk20:25:141
134491530,9ptp4l0-21swapper/322:11:523
134491530,5ptp4l0-21swapper/119:09:071
134491530,4ptp4l1898-21chrt22:00:292
134491530,4ptp4l0-21swapper/319:27:573
134491530,4ptp4l0-21swapper/222:25:052
134491530,4ptp4l0-21swapper/219:38:262
134491530,3ptp4l0-21swapper/322:01:553
134491530,3ptp4l0-21swapper/221:17:562
134491530,3ptp4l0-21swapper/121:03:461
134491530,12ptp4l0-21swapper/219:51:152
134491520,4ptp4l0-21swapper/323:54:403
134491520,4ptp4l0-21swapper/323:43:293
134491520,4ptp4l0-21swapper/323:33:243
134491520,4ptp4l0-21swapper/322:51:333
134491520,4ptp4l0-21swapper/221:42:442
134491520,4ptp4l0-21swapper/020:35:000
134491520,3ptp4l0-21swapper/319:57:013
1845799512,47cyclictest0-21swapper/119:30:481
1845799510,17cyclictest137891phc2sys22:01:161
1845699516,7cyclictest0-21swapper/000:10:150
1845699515,7cyclictest31310-21kernelversion23:05:180
134491510,4ptp4l0-21swapper/323:45:493
134491510,4ptp4l0-21swapper/319:46:013
134491510,4ptp4l0-21swapper/223:45:472
134491510,10ptp4l2390-21apt-get20:55:132
1845799503,25cyclictest0-21swapper/121:42:591
134491500,4ptp4l31409-21meminfo23:05:192
134491500,4ptp4l0-21swapper/222:21:002
134491500,3ptp4l0-21swapper/320:39:343
134491500,3ptp4l0-21swapper/300:19:583
134491500,19ptp4l0-21swapper/321:22:283
134491500,19ptp4l0-21swapper/321:22:283
1845799491,46cyclictest20933-21kworker/1:121:14:101
1845799490,27cyclictest212-21systemd-journal00:06:441
1845699494,7cyclictest0-21swapper/023:50:260
134491490,5ptp4l0-21swapper/019:06:270
134491490,3ptp4l0-21swapper/322:30:213
134491480,4ptp4l0-21swapper/322:23:403
134491480,3ptp4l0-21swapper/320:01:273
1845699474,6cyclictest0-21swapper/019:55:240
134491470,6ptp4l0-21swapper/000:25:120
134491470,5ptp4l1845799cyclictest00:25:191
134491470,4ptp4l0-21swapper/323:13:103
134491470,4ptp4l0-21swapper/222:48:232
134491470,4ptp4l0-21swapper/219:40:562
134491470,3ptp4l0-21swapper/221:13:502
134491470,2ptp4l0-21swapper/319:12:553
1845699464,7cyclictest0-21swapper/022:40:260
134491460,3ptp4l0-21swapper/300:05:553
134491460,3ptp4l0-21swapper/120:02:141
134491460,3ptp4l0-21swapper/022:05:010
1845799451,22cyclictest18578-21apt-get21:30:121
1845799450,25cyclictest31952-21seq20:47:031
1845799450,13cyclictest137891phc2sys21:54:081
1845699456,5cyclictest9-21ksoftirqd/021:45:270
134491450,4ptp4l27691-21apt-get19:30:112
134491450,4ptp4l0-21swapper/322:48:583
134491450,4ptp4l0-21swapper/222:31:132
134491450,3ptp4l0-21swapper/123:01:081
134491450,10ptp4l0-21swapper/021:04:070
18457994413,30cyclictest20933-21kworker/1:120:59:091
1845699447,6cyclictest0-21swapper/023:35:160
1845699444,7cyclictest0-21swapper/020:13:450
1845699442,5cyclictest0-21swapper/022:55:190
1845699441,2cyclictest134491ptp4l22:20:170
134491440,9ptp4l0-21swapper/000:06:010
134491440,4ptp4l0-21swapper/219:55:042
1845799438,25cyclictest24289-21pluginstate19:20:231
1845799431,24cyclictest11561-21seq23:33:381
1845799430,29cyclictest25257-21seq20:34:421
1845799430,29cyclictest1845-21sendmail-mta19:43:391
1845799430,23cyclictest316-21runrttasks00:19:071
1845799430,15cyclictest137891phc2sys23:45:111
1845699436,6cyclictest0-21swapper/021:30:120
1845699432,5cyclictest9-21ksoftirqd/022:30:140
134491430,9ptp4l0-21swapper/223:36:242
134491430,9ptp4l0-21swapper/200:36:212
134491430,5ptp4l0-21swapper/023:00:130
134491430,4ptp4l0-21swapper/320:09:073
1845799420,29cyclictest18633-21taskset22:39:211
1845799420,28cyclictest8849-21seq22:15:351
1845699427,7cyclictest9-21ksoftirqd/021:05:240
1845699427,5cyclictest9-21ksoftirqd/022:35:270
1845699424,7cyclictest0-21swapper/022:16:040
1845699423,7cyclictest0-21swapper/019:45:010
1845699422,6cyclictest9-21ksoftirqd/021:44:220
1845699420,12cyclictest9-21ksoftirqd/023:10:240
134491420,9ptp4l0-21swapper/222:58:312
134491420,9ptp4l0-21swapper/221:07:152
134491420,8ptp4l0-21swapper/221:31:172
134491420,8ptp4l0-21swapper/219:10:312
134491420,7ptp4l18170-21sort23:45:270
134491420,6ptp4l0-21swapper/122:20:371
134491420,5ptp4l0-21swapper/023:55:120
134491420,4ptp4l29360-21users19:30:270
134491420,4ptp4l17260-21ls20:15:203
134491420,4ptp4l15078-21iostat_ios23:40:182
134491420,4ptp4l0-21swapper/323:59:383
134491420,4ptp4l0-21swapper/319:39:583
134491420,4ptp4l0-21swapper/222:40:352
134491420,3ptp4l22203-21memory22:45:170
134491420,3ptp4l0-21swapper/222:08:452
134491420,3ptp4l0-21swapper/122:48:491
134491420,10ptp4l0-21swapper/120:12:371
1845799410,28cyclictest9074-21seq23:26:161
1845699413,5cyclictest0-21swapper/000:15:240
134491410,5ptp4l0-21swapper/223:30:192
134491410,5ptp4l0-21swapper/223:01:562
134491410,5ptp4l0-21swapper/219:05:062
134491410,5ptp4l0-21swapper/020:43:580
134491410,5ptp4l0-21swapper/020:00:190
134491410,5ptp4l0-21swapper/000:30:120
134491410,4ptp4l5464-21hddtemp_smartct23:20:160
134491410,4ptp4l28417-21iostat_ios20:40:151
134491410,4ptp4l0-21swapper/320:46:593
134491410,4ptp4l0-21swapper/319:51:053
134491410,4ptp4l0-21swapper/020:45:160
134491410,3ptp4l27345-21ls22:55:273
134491410,3ptp4l24804-21ls20:30:273
134491410,10ptp4l0-21swapper/220:35:402
1845799403,22cyclictest0-21swapper/123:50:061
1845799400,27cyclictest6859-21seq23:22:191
134491400,5ptp4l1301-21snmpd23:35:493
134491400,5ptp4l0-21swapper/321:45:203
134491400,5ptp4l0-21swapper/219:15:272
134491400,5ptp4l0-21swapper/023:15:150
134491400,5ptp4l0-21swapper/021:55:200
134491400,5ptp4l0-21swapper/021:10:190
134491400,5ptp4l0-21swapper/019:40:140
134491400,5ptp4l0-21swapper/019:16:360
134491400,5ptp4l0-21swapper/019:12:470
134491400,4ptp4l7222-21df21:05:161
134491400,4ptp4l3511-21ntp_states20:55:230
134491400,4ptp4l20076-21ntp_states22:40:223
134491400,4ptp4l19492-21irqstats20:20:180
134491400,4ptp4l1845899cyclictest22:10:212
134491400,4ptp4l15455-21meminfo23:40:200
134491400,4ptp4l1460-21/usr/sbin/munin22:00:250
134491400,4ptp4l0-21swapper/323:00:203
134491400,4ptp4l0-21swapper/223:55:132
134491400,4ptp4l0-21swapper/222:50:212
134491400,4ptp4l0-21swapper/222:35:232
134491400,4ptp4l0-21swapper/221:35:242
134491400,4ptp4l0-21swapper/221:20:182
134491400,4ptp4l0-21swapper/221:20:182
134491400,4ptp4l0-21swapper/221:00:172
134491400,4ptp4l0-21swapper/219:45:102
134491400,4ptp4l0-21swapper/200:10:202
134491400,4ptp4l0-21swapper/200:00:592
134491400,4ptp4l0-21swapper/119:50:231
134491400,4ptp4l0-21swapper/100:10:171
134491400,4ptp4l0-21swapper/022:25:140
134491400,4ptp4l0-21swapper/021:50:270
134491400,4ptp4l0-21swapper/019:39:210
134491400,4ptp4l0-21swapper/019:29:450
134491400,4ptp4l0-21swapper/000:35:260
134491400,3ptp4l24121-21iostat_ios22:50:180
134491400,3ptp4l15849-21python23:40:251
134491400,3ptp4l0-21swapper/020:05:290
134491390,5ptp4l0-21swapper/300:34:003
134491390,5ptp4l0-21swapper/021:25:180
134491390,4ptp4l30855-21/usr/sbin/munin00:15:142
134491390,4ptp4l30681-21df_abs23:05:141
134491390,4ptp4l24263-21/usr/sbin/munin00:00:170
134491390,4ptp4l2335-21ls00:20:280
134491390,4ptp4l21893-21meminfo20:25:200
134491390,4ptp4l0-21swapper/323:05:253
134491390,4ptp4l0-21swapper/322:35:193
134491390,4ptp4l0-21swapper/322:25:233
134491390,4ptp4l0-21swapper/322:15:153
134491390,4ptp4l0-21swapper/322:09:203
134491390,4ptp4l0-21swapper/321:55:263
134491390,4ptp4l0-21swapper/321:54:003
134491390,4ptp4l0-21swapper/320:53:523
134491390,4ptp4l0-21swapper/319:33:403
134491390,4ptp4l0-21swapper/319:22:053
134491390,4ptp4l0-21swapper/319:19:283
134491390,4ptp4l0-21swapper/223:53:172
134491390,4ptp4l0-21swapper/223:23:122
134491390,4ptp4l0-21swapper/223:16:472
134491390,4ptp4l0-21swapper/221:50:342
134491390,4ptp4l0-21swapper/221:25:502
134491390,4ptp4l0-21swapper/220:22:012
134491390,4ptp4l0-21swapper/220:19:202
134491390,4ptp4l0-21swapper/220:00:122
134491390,4ptp4l0-21swapper/200:32:212
134491390,4ptp4l0-21swapper/200:26:342
134491390,4ptp4l0-21swapper/200:08:202
134491390,4ptp4l0-21swapper/121:38:391
134491390,4ptp4l0-21swapper/120:07:311
134491390,4ptp4l0-21swapper/023:30:160
134491390,4ptp4l0-21swapper/022:12:510
134491390,4ptp4l0-21swapper/021:22:000
134491390,4ptp4l0-21swapper/021:22:000
134491390,4ptp4l0-21swapper/021:15:160
134491390,4ptp4l0-21swapper/020:50:040
134491390,4ptp4l0-21swapper/019:51:300
134491390,4ptp4l0-21swapper/019:20:360
134491390,3ptp4l23759-21df22:50:141
134491390,3ptp4l0-21swapper/122:55:231
134491390,2ptp4l25397-21apt-get19:25:122
134491380,4ptp4l0-21swapper/321:30:223
134491380,4ptp4l0-21swapper/321:13:053
134491380,4ptp4l0-21swapper/321:07:483
134491380,4ptp4l0-21swapper/320:59:473
134491380,4ptp4l0-21swapper/320:43:123
134491380,4ptp4l0-21swapper/320:20:153
134491380,4ptp4l0-21swapper/320:10:193
134491380,4ptp4l0-21swapper/319:40:123
134491380,4ptp4l0-21swapper/300:35:283
134491380,4ptp4l0-21swapper/300:25:163
134491380,4ptp4l0-21swapper/300:10:213
134491380,4ptp4l0-21swapper/300:00:153
134491380,4ptp4l0-21swapper/220:50:082
134491380,4ptp4l0-21swapper/200:22:292
134491380,3ptp4l401ktimersoftd/323:25:153
134491380,3ptp4l26025-21if_enp1s020:35:170
134491380,3ptp4l22377-21/usr/sbin/munin21:35:263
134491380,3ptp4l0-21swapper/320:25:173
134491380,3ptp4l0-21swapper/223:27:192
134491380,3ptp4l0-21swapper/220:43:392
134491380,3ptp4l0-21swapper/119:56:171
134491380,2ptp4l24738-21ls20:30:262
134491370,4ptp4l0-21swapper/323:17:093
134491370,4ptp4l0-21swapper/321:40:003
134491370,4ptp4l0-21swapper/321:17:203
134491370,3ptp4l0-21swapper/321:29:033
134491360,4ptp4l0-21swapper/323:21:563
134491360,4ptp4l0-21swapper/300:21:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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