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2026-04-21 - 03:42
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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 highest latencies:
System rack1slot1.osadl.org (updated Tue Apr 21, 2026 00:45:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2525825080,5sleep20-21swapper/219:05:122
270452201161,26sleep30-21swapper/319:06:273
272652199161,24sleep00-21swapper/019:09:180
271892196158,25sleep10-21swapper/119:08:171
25972760,1sleep10-21swapper/122:09:591
139732600,0sleep10-21swapper/121:40:201
52222590,2sleep121-21ksoftirqd/119:30:001
239402550,0sleep30-21swapper/300:01:163
150712160,0sleep00-21swapper/023:07:220
2740499132,5cyclictest20651-21latency_hist21:10:000
27404991310,1cyclictest240-21systemd-journal00:25:010
27430991111,0cyclictest35-21ksoftirqd/321:45:203
27430991111,0cyclictest35-21ksoftirqd/300:20:003
27430991111,0cyclictest35-21ksoftirqd/300:19:593
27404991110,1cyclictest9-21ksoftirqd/022:30:010
27404991110,1cyclictest9-21ksoftirqd/022:30:010
27404991110,1cyclictest9-21ksoftirqd/021:15:000
2742299109,1cyclictest28-21ksoftirqd/222:21:352
2742299109,1cyclictest28-21ksoftirqd/220:24:592
27422991010,0cyclictest0-21swapper/221:50:182
2740499109,1cyclictest9-21ksoftirqd/023:15:150
2740499109,1cyclictest9-21ksoftirqd/020:50:010
2740499108,1cyclictest9-21ksoftirqd/020:05:000
2740499102,4cyclictest32583-21latency_hist21:25:000
274309999,0cyclictest35-21ksoftirqd/323:25:013
274309999,0cyclictest35-21ksoftirqd/322:10:003
274309999,0cyclictest35-21ksoftirqd/320:30:003
274309998,1cyclictest35-21ksoftirqd/323:05:003
274309998,1cyclictest35-21ksoftirqd/319:45:013
274309998,1cyclictest35-21ksoftirqd/300:39:343
274309994,3cyclictest33712sleep322:52:043
274309992,6cyclictest4633-21apt-get00:20:113
274309990,7cyclictest17998-21snmpd22:18:383
274309990,6cyclictest31257-21perf20:25:003
274229990,9cyclictest0-21swapper/222:25:402
274229990,9cyclictest0-21swapper/222:25:392
274229990,7cyclictest27859-21kworker/u8:222:50:092
274049998,1cyclictest9-21ksoftirqd/022:40:160
274049998,1cyclictest9-21ksoftirqd/022:32:590
274049998,1cyclictest9-21ksoftirqd/022:32:580
274049998,1cyclictest9-21ksoftirqd/022:20:140
274049998,1cyclictest561-21nscd00:05:540
274049997,1cyclictest9-21ksoftirqd/000:15:170
274049997,1cyclictest9-21ksoftirqd/000:15:170
274049992,4cyclictest18348-21latency_hist21:05:000
274049990,7cyclictest20650-21diskmemload00:03:090
274309987,1cyclictest35-21ksoftirqd/322:40:013
274309987,1cyclictest35-21ksoftirqd/320:40:013
274309986,1cyclictest17998-21snmpd23:43:103
274309981,4cyclictest27610-21apt-get19:10:123
274309980,5cyclictest0-21swapper/321:19:573
274229986,1cyclictest61650irq/122-eno123:35:122
274229986,1cyclictest61650irq/122-eno123:20:002
274229986,1cyclictest61650irq/122-eno123:05:202
274229986,1cyclictest61650irq/122-eno123:00:122
274229986,1cyclictest61650irq/122-eno122:35:142
274229986,1cyclictest61650irq/122-eno119:50:162
274229986,1cyclictest29542-21ssh00:10:122
274229986,1cyclictest26511-21cat00:05:152
274229986,1cyclictest17998-21snmpd23:21:582
274229986,1cyclictest17998-21snmpd19:18:262
274229984,2cyclictest240-21systemd-journal22:20:002
274229982,3cyclictest6778-21kworker/u8:000:00:592
274229981,4cyclictest0-21swapper/220:00:122
274229980,7cyclictest12402-21apt-get19:45:092
274229980,4cyclictest16343-21apt-get23:10:122
274169980,5cyclictest0-21swapper/123:50:111
274049987,1cyclictest9-21ksoftirqd/023:30:160
274049987,1cyclictest9-21ksoftirqd/023:25:130
274049987,1cyclictest9-21ksoftirqd/022:55:140
274049986,0cyclictest0-21swapper/019:35:190
274049986,0cyclictest0-21swapper/019:35:190
274049982,5cyclictest31308-21perf20:25:000
274049981,4cyclictest10153-21latency_hist23:44:590
274049980,7cyclictest962-21apt-get22:50:110
274049980,7cyclictest12678-21df00:30:120
12488280,1sleep30-21swapper/321:40:023
274309977,0cyclictest35-21ksoftirqd/322:20:143
274309976,1cyclictest35-21ksoftirqd/323:20:003
274309976,1cyclictest35-21ksoftirqd/323:15:003
274309976,1cyclictest35-21ksoftirqd/323:10:003
274309976,1cyclictest17998-21snmpd23:29:493
274309976,1cyclictest17998-21snmpd22:40:053
274309975,1cyclictest35-21ksoftirqd/321:30:013
274309975,1cyclictest35-21ksoftirqd/319:35:003
274309971,3cyclictest29762-21munin-node19:15:003
274309970,6cyclictest16072-21ssh22:25:273
274309970,6cyclictest16072-21ssh22:25:273
274309970,5cyclictest17998-21snmpd23:55:553
274309970,2cyclictest0-21swapper/323:35:413
274229976,1cyclictest61650irq/122-eno120:15:202
274229976,1cyclictest61650irq/122-eno119:25:182
274229976,1cyclictest61650irq/122-eno100:28:552
274229976,1cyclictest17149-21ntp_states00:35:182
274229976,1cyclictest1344-21cat21:25:162
274229976,0cyclictest61650irq/122-eno121:15:112
274229975,1cyclictest61650irq/122-eno122:45:152
274229975,1cyclictest61650irq/122-eno122:00:152
274229975,1cyclictest61650irq/122-eno121:45:012
274229975,1cyclictest61650irq/122-eno121:30:142
274229975,1cyclictest61650irq/122-eno120:05:212
274229975,1cyclictest28-21ksoftirqd/222:44:012
274229975,1cyclictest17998-21snmpd23:30:552
274229975,1cyclictest17998-21snmpd23:25:012
274229973,2cyclictest240-21systemd-journal00:15:012
274229973,2cyclictest240-21systemd-journal00:15:012
274229970,7cyclictest0-21swapper/221:45:032
274229970,1cyclictest548-21systemd-logind22:30:192
274229970,1cyclictest548-21systemd-logind22:30:192
274229970,1cyclictest0-21swapper/219:42:392
274229970,0cyclictest0-21swapper/221:13:332
274169970,6cyclictest0-21swapper/120:25:011
274169970,6cyclictest0-21swapper/119:13:171
274169970,1cyclictest0-21swapper/121:13:531
274169970,1cyclictest0-21swapper/119:35:331
274169970,1cyclictest0-21swapper/119:35:321
274169970,1cyclictest0-21swapper/100:07:101
274049976,1cyclictest9-21ksoftirqd/021:45:180
274049976,1cyclictest27766-1kworker/u9:000:11:020
274049975,1cyclictest9-21ksoftirqd/021:00:000
274049975,1cyclictest3594-21perl22:10:150
274049975,1cyclictest27101-21ssh21:59:110
274049975,1cyclictest17998-21snmpd20:06:000
274049973,3cyclictest9-21ksoftirqd/019:40:220
274049971,6cyclictest18503-1kworker/u9:100:37:280
274049971,5cyclictest23937-21/usr/sbin/munin23:20:170
274049970,6cyclictest7587-21irqstats22:15:160
274049970,6cyclictest31898-21ls22:05:140
274049970,6cyclictest30242-21ssh22:02:220
274049970,6cyclictest25627-21ssh21:15:150
274049970,6cyclictest22666-21hddtemp_smartct22:35:170
274049970,6cyclictest19984-21ssh23:55:510
274049970,6cyclictest17002-21perl23:10:140
274049970,6cyclictest11326-21ssh21:37:310
274049970,6cyclictest0-21swapper/022:45:110
274049970,1cyclictest15345-21grep19:50:160
274049970,1cyclictest10503-21ssh23:45:110
274049970,1cyclictest0-21swapper/023:52:480
274049970,1cyclictest0-21swapper/021:40:020
274049970,1cyclictest0-21swapper/021:25:140
274309965,1cyclictest35-21ksoftirqd/322:55:133
274309965,1cyclictest31461-21ssh22:45:293
274309965,1cyclictest26319-21ssh21:57:053
274309965,1cyclictest21007-21ssh22:33:323
274309965,1cyclictest21007-21ssh22:33:323
274309965,1cyclictest17998-21snmpd21:12:023
274309965,1cyclictest17998-21snmpd21:04:323
274309965,1cyclictest17998-21snmpd20:03:573
274309965,1cyclictest17998-21snmpd19:52:093
274309965,1cyclictest17998-21snmpd19:36:123
274309965,1cyclictest17998-21snmpd19:36:123
274309965,1cyclictest17998-21snmpd00:27:033
274309965,1cyclictest17998-21snmpd00:10:173
274309965,1cyclictest17024-21ssh23:53:063
274309965,1cyclictest14281-21sshd19:47:063
274309964,1cyclictest35-21ksoftirqd/319:30:003
274309964,1cyclictest17998-21snmpd22:10:343
274309963,1cyclictest240-21systemd-journal21:40:013
274309963,1cyclictest13650irq/124-ahci[0020:19:553
274309962,2cyclictest26133-21/usr/sbin/munin00:05:143
274309962,1cyclictest0-21swapper/300:30:143
274309961,2cyclictest0-21swapper/319:20:173
274309960,5cyclictest29762-21munin-node21:31:153
274309960,3cyclictest0-21swapper/321:20:113
274309960,3cyclictest0-21swapper/320:30:143
274309960,1cyclictest0-21swapper/322:00:123
274309960,1cyclictest0-21swapper/321:50:123
274309960,1cyclictest0-21swapper/319:55:143
274229966,0cyclictest61650irq/122-eno123:56:012
274229966,0cyclictest61650irq/122-eno123:51:132
274229966,0cyclictest61650irq/122-eno123:45:132
274229966,0cyclictest61650irq/122-eno123:40:192
274229966,0cyclictest61650irq/122-eno122:55:212
274229966,0cyclictest61650irq/122-eno122:10:032
274229966,0cyclictest61650irq/122-eno121:55:132
274229966,0cyclictest61650irq/122-eno121:35:012
274229966,0cyclictest61650irq/122-eno120:40:182
274229966,0cyclictest61650irq/122-eno120:30:242
274229966,0cyclictest61650irq/122-eno120:30:002
274229966,0cyclictest61650irq/122-eno119:38:142
274229966,0cyclictest61650irq/122-eno119:38:142
274229966,0cyclictest61650irq/122-eno100:30:112
274229965,1cyclictest61650irq/122-eno119:30:122
274229965,1cyclictest61650irq/122-eno100:20:122
274229965,1cyclictest17998-21snmpd19:55:392
274229965,1cyclictest0-21swapper/220:11:222
274229964,1cyclictest61650irq/122-eno121:20:122
274229964,1cyclictest28-21ksoftirqd/220:56:382
274229961,5cyclictest0-21swapper/219:22:032
274229960,6cyclictest0-21swapper/221:07:232
274229960,3cyclictest17998-21snmpd21:04:252
274229960,1cyclictest0-21swapper/222:05:412
274229960,1cyclictest0-21swapper/220:45:192
274169961,3cyclictest0-21swapper/120:50:091
274169961,2cyclictest0-21swapper/120:35:181
274169960,6cyclictest0-21swapper/122:20:281
274169960,6cyclictest0-21swapper/121:04:171
274169960,6cyclictest0-21swapper/120:18:461
274169960,6cyclictest0-21swapper/120:09:451
274169960,6cyclictest0-21swapper/119:46:541
274169960,6cyclictest0-21swapper/119:15:151
274169960,5cyclictest0-21swapper/122:31:151
274169960,5cyclictest0-21swapper/122:31:151
274169960,5cyclictest0-21swapper/120:00:301
274169960,5cyclictest0-21swapper/119:55:151
274169960,4cyclictest0-21swapper/123:22:091
274169960,4cyclictest0-21swapper/121:48:101
274169960,4cyclictest0-21swapper/119:40:131
274169960,3cyclictest0-21swapper/123:02:261
274169960,2cyclictest0-21swapper/123:48:001
274169960,2cyclictest0-21swapper/122:15:571
274169960,1cyclictest0-21swapper/123:30:191
274049965,1cyclictest9-21ksoftirqd/023:00:150
274049965,1cyclictest9-21ksoftirqd/019:20:110
274049965,1cyclictest18258-21ntpq19:55:180
274049964,1cyclictest9-21ksoftirqd/019:45:130
274049964,1cyclictest9-21ksoftirqd/019:30:120
274049960,6cyclictest0-21swapper/020:50:100
274049960,6cyclictest0-21swapper/000:25:110
274049960,5cyclictest28698-21strings19:10:170
274049960,5cyclictest0-21swapper/021:50:120
274049960,2cyclictest0-21swapper/020:30:140
274049960,1cyclictest4652-21ssh21:30:090
274049960,0cyclictest0-21swapper/023:35:110
274049960,0cyclictest0-21swapper/019:15:180
274309954,1cyclictest17998-21snmpd23:30:003
274309954,1cyclictest17998-21snmpd21:06:413
274309954,1cyclictest17998-21snmpd20:55:143
274309953,2cyclictest0-21swapper/320:40:153
274309953,1cyclictest24384-21/usr/sbin/munin20:10:163
274309950,0cyclictest0-21swapper/323:45:113
274309950,0cyclictest0-21swapper/320:48:193
274229955,0cyclictest61650irq/122-eno119:10:162
274229953,1cyclictest11736-21grep20:50:112
274229950,1cyclictest0-21swapper/220:35:202
274169953,1cyclictest0-21swapper/123:16:251
274169952,2cyclictest0-21swapper/120:45:211
274169952,0cyclictest0-21swapper/119:24:391
274169951,3cyclictest0-21swapper/123:55:131
274169951,2cyclictest0-21swapper/123:10:101
274169951,2cyclictest0-21swapper/121:15:131
274169951,1cyclictest0-21swapper/122:25:151
274169951,1cyclictest0-21swapper/122:25:151
274169950,5cyclictest0-21swapper/123:25:231
274169950,5cyclictest0-21swapper/122:45:171
274169950,5cyclictest0-21swapper/121:52:401
274169950,5cyclictest0-21swapper/120:34:421
274169950,5cyclictest0-21swapper/120:21:401
274169950,5cyclictest0-21swapper/100:18:381
274169950,5cyclictest0-21swapper/100:18:381
274169950,4cyclictest0-21swapper/123:40:461
274169950,4cyclictest0-21swapper/120:40:071
274169950,3cyclictest0-21swapper/123:37:321
274169950,3cyclictest0-21swapper/121:36:401
274169950,3cyclictest0-21swapper/121:25:031
274169950,3cyclictest0-21swapper/120:57:021
274169950,3cyclictest0-21swapper/100:12:131
274169950,2cyclictest0-21swapper/122:41:011
274169950,2cyclictest0-21swapper/100:20:191
274169950,2cyclictest0-21swapper/100:00:481
274169950,1cyclictest0-21swapper/122:58:021
274169950,1cyclictest0-21swapper/121:57:371
274169950,1cyclictest0-21swapper/100:37:571
274049954,1cyclictest9-21ksoftirqd/020:10:110
274049953,1cyclictest2963-21/usr/sbin/munin19:25:140
274049951,1cyclictest240-21systemd-journal20:40:010
274049950,4cyclictest741-21kworker/0:220:25:180
274049950,1cyclictest0-21swapper/020:35:120
274049950,0cyclictest0-21swapper/020:15:070
274309942,1cyclictest22108-21aten_r1power_fr20:05:133
274309940,1cyclictest0-21swapper/320:50:123
274169942,1cyclictest166962sleep119:52:551
274169941,1cyclictest0-21swapper/121:20:101
274169940,4cyclictest0-21swapper/121:30:541
274169940,3cyclictest14763-21taskset23:06:311
274169940,3cyclictest0-21swapper/122:50:131
274169940,3cyclictest0-21swapper/100:32:431
274169940,2cyclictest0-21swapper/122:35:101
274169940,2cyclictest0-21swapper/122:11:021
274169940,2cyclictest0-21swapper/100:27:301
274169940,1cyclictest0-21swapper/122:00:111
274169940,0cyclictest0-21swapper/121:05:201
274169940,0cyclictest0-21swapper/120:10:191
274169940,0cyclictest0-21swapper/119:34:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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