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2026-01-07 - 13:02
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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 792 highest latencies:
System rack1slot1.osadl.org (updated Wed Jan 07, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256772208150,47sleep30-21swapper/319:08:113
256462203164,26sleep20-21swapper/219:07:472
256752200161,26sleep10-21swapper/119:08:091
255772198159,26sleep00-21swapper/019:06:520
25939991211,1cyclictest35-21ksoftirqd/322:20:003
2593999120,1cyclictest4700-21munin-run00:04:593
25928991210,1cyclictest28-21ksoftirqd/219:45:002
2592899120,1cyclictest0-21swapper/219:35:162
2591399124,4cyclictest16393-21latency_hist21:04:590
2591399122,5cyclictest28465-21perf21:30:010
2591399122,5cyclictest28465-21perf21:30:010
2591399120,11cyclictest19806-21sendmail22:19:590
2592899119,1cyclictest28-21ksoftirqd/221:50:002
2592899119,1cyclictest28-21ksoftirqd/220:15:142
25928991110,1cyclictest28-21ksoftirqd/221:15:012
2592899109,1cyclictest28-21ksoftirqd/220:00:002
2592899108,1cyclictest28-21ksoftirqd/222:55:192
2592899108,1cyclictest28-21ksoftirqd/222:50:132
2592899108,1cyclictest28-21ksoftirqd/220:40:012
2592899108,1cyclictest28-21ksoftirqd/220:30:012
2592899108,1cyclictest28-21ksoftirqd/219:25:012
2592899102,1cyclictest28-21ksoftirqd/223:15:202
2592899100,4cyclictest26872-21cron22:35:012
2591899100,1cyclictest0-21swapper/123:25:121
259399998,1cyclictest35-21ksoftirqd/323:50:003
259399998,1cyclictest35-21ksoftirqd/322:40:093
259399998,1cyclictest35-21ksoftirqd/322:10:003
259289998,1cyclictest28-21ksoftirqd/222:00:222
259289998,1cyclictest28-21ksoftirqd/220:55:142
259289997,1cyclictest28-21ksoftirqd/223:54:592
259289997,1cyclictest28-21ksoftirqd/223:35:142
259289990,4cyclictest554-21dbus-daemon21:40:012
259139998,1cyclictest9-21ksoftirqd/020:30:010
259139997,1cyclictest9-21ksoftirqd/000:35:010
259139990,8cyclictest31710-21latency_hist22:45:000
259399988,0cyclictest35-21ksoftirqd/319:20:003
259399987,1cyclictest35-21ksoftirqd/323:59:593
259399987,1cyclictest35-21ksoftirqd/300:40:003
259399986,1cyclictest707-21snmpd21:37:183
259399986,1cyclictest35-21ksoftirqd/320:00:003
259289988,0cyclictest28-21ksoftirqd/220:10:132
259289987,1cyclictest28-21ksoftirqd/223:20:132
259289987,1cyclictest28-21ksoftirqd/223:10:202
259289987,1cyclictest28-21ksoftirqd/222:05:122
259289987,1cyclictest28-21ksoftirqd/221:50:002
259289987,1cyclictest28-21ksoftirqd/219:30:192
259289987,1cyclictest28-21ksoftirqd/219:15:152
259289987,1cyclictest28-21ksoftirqd/200:15:112
259289986,1cyclictest7644-21kworker/2:000:00:112
259289986,1cyclictest707-21snmpd22:16:072
259289986,1cyclictest707-21snmpd20:41:562
259289986,1cyclictest61650irq/122-eno121:55:142
259289986,1cyclictest61650irq/122-eno121:09:592
259289986,1cyclictest28-21ksoftirqd/223:30:142
259289986,1cyclictest28-21ksoftirqd/220:50:112
259289986,1cyclictest28-21ksoftirqd/219:50:132
259289986,1cyclictest28-21ksoftirqd/219:10:142
259289986,1cyclictest1416-21df21:40:142
259189981,3cyclictest0-21swapper/121:25:001
259189981,1cyclictest0-21swapper/100:21:071
259189980,4cyclictest0-21swapper/121:45:091
259139986,1cyclictest707-21snmpd23:52:280
259139986,1cyclictest707-21snmpd19:47:450
259139986,1cyclictest707-21snmpd00:16:500
259139984,1cyclictest0-21swapper/019:55:180
259139982,5cyclictest25044-21sed20:15:000
259139982,3cyclictest5960-21sort19:35:010
259139980,7cyclictest707-21snmpd20:45:110
259399977,0cyclictest35-21ksoftirqd/322:30:143
259399976,1cyclictest707-21snmpd23:51:173
259399976,1cyclictest707-21snmpd23:40:553
259399976,1cyclictest707-21snmpd21:21:213
259399976,1cyclictest707-21snmpd00:22:523
259399976,1cyclictest35-21ksoftirqd/323:40:013
259399976,1cyclictest35-21ksoftirqd/320:41:383
259399976,1cyclictest35-21ksoftirqd/320:25:553
259399976,1cyclictest35-21ksoftirqd/320:20:003
259399976,1cyclictest35-21ksoftirqd/319:40:013
259399976,1cyclictest35-21ksoftirqd/319:21:403
259399975,1cyclictest707-21snmpd20:05:153
259289976,1cyclictest7644-21kworker/2:022:40:112
259289976,1cyclictest7644-21kworker/2:000:05:152
259289976,1cyclictest61650irq/122-eno122:25:122
259289976,1cyclictest61650irq/122-eno120:04:552
259289976,1cyclictest61650irq/122-eno100:10:552
259289976,1cyclictest28-21ksoftirqd/223:45:152
259289976,1cyclictest28-21ksoftirqd/223:40:202
259289976,1cyclictest28-21ksoftirqd/220:59:592
259289976,1cyclictest28-21ksoftirqd/220:20:132
259289976,1cyclictest28-21ksoftirqd/200:30:172
259289976,1cyclictest28-21ksoftirqd/200:25:012
259289975,1cyclictest707-21snmpd00:25:282
259289975,1cyclictest28-21ksoftirqd/223:25:142
259289975,1cyclictest28-21ksoftirqd/222:45:172
259289975,1cyclictest28-21ksoftirqd/222:35:122
259289975,1cyclictest28-21ksoftirqd/220:10:002
259189974,3cyclictest0-21swapper/100:35:201
259189971,1cyclictest0-21swapper/123:59:241
259189970,6cyclictest0-21swapper/123:45:151
259189970,6cyclictest0-21swapper/122:57:151
259139976,1cyclictest707-21snmpd23:32:550
259139976,1cyclictest707-21snmpd22:46:540
259139976,1cyclictest707-21snmpd21:39:170
259139976,1cyclictest707-21snmpd21:16:330
259139975,1cyclictest9-21ksoftirqd/023:05:000
259139975,1cyclictest9-21ksoftirqd/000:10:110
259139975,1cyclictest707-21snmpd21:54:440
259139975,1cyclictest707-21snmpd20:42:320
259139975,1cyclictest707-21snmpd19:15:230
259139975,1cyclictest707-21snmpd00:08:180
259139975,1cyclictest10669-21perf19:45:000
259139975,1cyclictest1047-21idleruntime23:55:150
259139973,2cyclictest240-21systemd-journal20:20:000
259139971,5cyclictest6302-21perf23:00:000
259139970,6cyclictest4068-21cat00:00:200
259139970,6cyclictest0-21swapper/021:05:170
259139970,4cyclictest0-21swapper/000:35:120
259139970,1cyclictest0-21swapper/022:25:200
259139970,1cyclictest0-21swapper/022:00:140
259139970,1cyclictest0-21swapper/019:52:400
259399966,0cyclictest35-21ksoftirqd/323:15:003
259399965,1cyclictest707-21snmpd22:46:173
259399965,1cyclictest707-21snmpd21:58:143
259399965,1cyclictest707-21snmpd20:38:263
259399965,1cyclictest707-21snmpd20:21:223
259399965,1cyclictest707-21snmpd20:03:243
259399965,1cyclictest35-21ksoftirqd/323:15:133
259399965,1cyclictest35-21ksoftirqd/322:35:113
259399965,1cyclictest35-21ksoftirqd/321:45:113
259399965,1cyclictest35-21ksoftirqd/321:00:003
259399965,1cyclictest35-21ksoftirqd/319:30:013
259399965,1cyclictest35-21ksoftirqd/300:10:133
259399965,1cyclictest35-21ksoftirqd/300:09:593
259399964,1cyclictest707-21snmpd23:27:563
259399964,1cyclictest707-21snmpd00:31:133
259399961,2cyclictest693-21runrttasks20:33:013
259399961,2cyclictest693-21runrttasks20:33:003
259399960,4cyclictest7732-21kworker/3:221:30:123
259399960,4cyclictest0-21swapper/322:20:203
259399960,3cyclictest11122-21sshd20:50:573
259399960,2cyclictest0-21swapper/322:50:153
259399960,1cyclictest240-21systemd-journal21:30:003
259399960,1cyclictest240-21systemd-journal21:30:003
259289966,0cyclictest7644-21kworker/2:023:55:152
259289966,0cyclictest7644-21kworker/2:000:35:132
259289966,0cyclictest61650irq/122-eno123:05:012
259289966,0cyclictest61650irq/122-eno122:10:062
259289966,0cyclictest61650irq/122-eno121:27:372
259289966,0cyclictest61650irq/122-eno121:27:372
259289966,0cyclictest61650irq/122-eno121:22:412
259289965,0cyclictest28-21ksoftirqd/222:20:142
259289964,1cyclictest61650irq/122-eno121:15:132
259289964,1cyclictest61650irq/122-eno119:25:142
259289960,1cyclictest0-21swapper/223:04:252
259189965,1cyclictest0-21swapper/121:39:031
259189960,6cyclictest0-21swapper/123:07:101
259189960,6cyclictest0-21swapper/122:02:021
259189960,6cyclictest0-21swapper/121:31:481
259189960,6cyclictest0-21swapper/120:56:151
259189960,6cyclictest0-21swapper/120:16:241
259189960,5cyclictest0-21swapper/123:51:591
259189960,5cyclictest0-21swapper/122:25:181
259189960,5cyclictest0-21swapper/121:50:161
259189960,5cyclictest0-21swapper/120:02:361
259189960,4cyclictest0-21swapper/123:15:151
259189960,4cyclictest0-21swapper/120:35:011
259189960,4cyclictest0-21swapper/120:35:001
259189960,1cyclictest0-21swapper/122:40:011
259189960,1cyclictest0-21swapper/122:20:591
259189960,1cyclictest0-21swapper/100:30:121
259139966,0cyclictest0-21swapper/020:00:200
259139965,1cyclictest707-21snmpd22:08:010
259139964,1cyclictest707-21snmpd23:46:440
259139964,1cyclictest707-21snmpd19:27:360
259139964,1cyclictest7050-21cat19:35:140
259139964,1cyclictest693-21runrttasks20:20:300
259139964,1cyclictest15309-21/usr/sbin/munin22:10:140
259139963,3cyclictest28270-21munin-node19:20:020
259139963,2cyclictest2424-21tune2fs22:50:140
259139961,5cyclictest733-21sshd20:30:560
259139961,5cyclictest733-21sshd20:30:560
259139960,6cyclictest0-21swapper/021:34:160
259139960,5cyclictest0-21swapper/022:20:150
259139960,1cyclictest0-21swapper/023:25:110
259139960,1cyclictest0-21swapper/023:15:110
259139960,0cyclictest0-21swapper/023:35:180
259139960,0cyclictest0-21swapper/023:05:110
259139960,0cyclictest0-21swapper/021:58:450
259139960,0cyclictest0-21swapper/021:43:050
259139960,0cyclictest0-21swapper/020:56:240
259139960,0cyclictest0-21swapper/020:39:380
259139960,0cyclictest0-21swapper/019:13:420
259399955,0cyclictest5882-21sshd22:55:373
259399954,1cyclictest9853-21hddtemp_smartct23:05:143
259399954,1cyclictest707-21snmpd21:07:393
259399954,1cyclictest35-21ksoftirqd/319:50:003
259399954,1cyclictest24275-21sensors20:10:193
259399954,1cyclictest11777-21systemctl00:20:003
259399954,0cyclictest35-21ksoftirqd/319:15:003
259399953,1cyclictest707-21snmpd23:02:333
259399952,1cyclictest240-21systemd-journal22:30:013
259399950,5cyclictest0-21swapper/323:33:043
259399950,5cyclictest0-21swapper/321:50:293
259399950,3cyclictest0-21swapper/319:30:113
259399950,2cyclictest14372-21apt-get00:25:113
259399950,0cyclictest14260-21/usr/sbin/munin21:00:143
259399950,0cyclictest0-21swapper/322:14:123
259399950,0cyclictest0-21swapper/320:49:323
259399950,0cyclictest0-21swapper/319:40:123
259289955,0cyclictest8807-21kworker/2:119:45:112
259289955,0cyclictest61650irq/122-eno120:45:052
259289954,1cyclictest61650irq/122-eno120:30:122
259289954,1cyclictest61650irq/122-eno120:30:122
259289950,1cyclictest0-21swapper/221:30:112
259189955,0cyclictest0-21swapper/120:40:151
259189952,2cyclictest0-21swapper/119:34:381
259189951,2cyclictest0-21swapper/120:35:131
259189950,5cyclictest0-21swapper/121:55:501
259189950,5cyclictest0-21swapper/120:24:191
259189950,5cyclictest0-21swapper/119:51:471
259189950,5cyclictest0-21swapper/119:12:131
259189950,5cyclictest0-21swapper/100:25:391
259189950,5cyclictest0-21swapper/100:06:501
259189950,4cyclictest0-21swapper/123:35:011
259189950,4cyclictest0-21swapper/122:15:011
259189950,4cyclictest0-21swapper/121:40:151
259189950,4cyclictest0-21swapper/121:25:201
259189950,4cyclictest0-21swapper/121:25:201
259189950,2cyclictest0-21swapper/119:40:121
259189950,2cyclictest0-21swapper/100:00:091
259189950,1cyclictest0-21swapper/121:15:171
259189950,1cyclictest0-21swapper/121:03:121
259189950,1cyclictest0-21swapper/120:25:181
259139955,0cyclictest0-21swapper/021:10:200
259139954,1cyclictest9-21ksoftirqd/000:20:110
259139952,2cyclictest0-21swapper/023:10:140
259139952,1cyclictest240-21systemd-journal21:45:000
259139950,5cyclictest0-21swapper/021:23:250
259139950,4cyclictest9328-21/usr/sbin/munin20:50:090
259139950,4cyclictest20524-21/usr/sbin/munin20:05:140
259139950,4cyclictest16062-21grep00:25:200
259139950,4cyclictest0-21swapper/023:40:110
259139950,1cyclictest27101-21/usr/sbin/munin22:35:140
259139950,1cyclictest0-21swapper/022:30:160
259139950,0cyclictest0-21swapper/023:20:100
259399944,0cyclictest707-21snmpd21:14:123
259399944,0cyclictest0-21swapper/321:18:153
259399943,1cyclictest17451-21rt-features23:20:203
259399942,1cyclictest707-21snmpd22:01:563
259399942,1cyclictest1670-21grep21:40:143
259189943,1cyclictest0-21swapper/121:10:201
259189942,1cyclictest0-21swapper/122:40:121
259189942,1cyclictest0-21swapper/120:05:001
259189941,2cyclictest0-21swapper/100:10:121
259189940,4cyclictest0-21swapper/123:35:421
259189940,4cyclictest0-21swapper/122:54:081
259189940,4cyclictest0-21swapper/122:17:191
259189940,4cyclictest0-21swapper/122:09:221
259189940,4cyclictest0-21swapper/120:50:191
259189940,4cyclictest0-21swapper/120:13:591
259189940,4cyclictest0-21swapper/119:25:231
259189940,3cyclictest18742-21taskset21:07:401
259189940,3cyclictest0-21swapper/122:30:141
259189940,2cyclictest0-21swapper/123:10:261
259189940,2cyclictest0-21swapper/123:00:121
259189940,2cyclictest0-21swapper/122:45:111
259189940,2cyclictest0-21swapper/119:20:131
259189940,1cyclictest0-21swapper/123:40:121
259189940,1cyclictest0-21swapper/100:15:161
259189940,0cyclictest0-21swapper/123:20:201
259399930,1cyclictest240-21systemd-journal19:45:013
259189931,1cyclictest0-21swapper/119:45:111
259189931,1cyclictest0-21swapper/119:35:141
259189930,3cyclictest0-21swapper/119:55:151
259189930,1cyclictest0-21swapper/120:45:141
259189930,0cyclictest0-21swapper/119:15:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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