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2026-04-21 - 21:23
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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 rack1slot1.osadl.org (updated Tue Apr 21, 2026 12:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
192092218153,52sleep00-21swapper/007:07:030
193002202163,25sleep20-21swapper/207:08:142
192292200160,27sleep30-21swapper/307:07:193
191182197160,24sleep10-21swapper/107:05:521
252482820,0sleep10-21swapper/109:25:131
148982180,0sleep10-21swapper/110:35:211
1951999140,1cyclictest0-21swapper/209:25:112
1951499140,13cyclictest0-21swapper/107:15:121
19523991311,1cyclictest35-21ksoftirqd/307:30:013
19510991311,1cyclictest9-21ksoftirqd/010:00:000
1951999120,11cyclictest9039-21ps09:45:182
1951099119,1cyclictest9-21ksoftirqd/010:35:000
1951099112,4cyclictest18453-21perf08:15:000
19510991110,1cyclictest9-21ksoftirqd/008:55:000
75172100,0sleep20-21swapper/211:10:092
1951999106,1cyclictest28-21ksoftirqd/207:25:002
1951999102,2cyclictest24616-21sh12:15:112
1951099102,4cyclictest22809-21latency_hist10:05:000
195239992,6cyclictest23038-21/usr/sbin/munin10:05:213
195199998,1cyclictest28-21ksoftirqd/207:30:012
195199990,5cyclictest0-21swapper/208:10:112
195109991,4cyclictest5385-21cat11:49:590
195109991,4cyclictest24542-21cat10:49:590
195109990,4cyclictest16081-21perf09:14:590
195109990,4cyclictest11097-21perf11:15:010
195239986,1cyclictest17998-21snmpd11:42:293
195239986,1cyclictest17998-21snmpd09:52:173
195239986,1cyclictest17998-21snmpd08:47:323
195239986,1cyclictest17998-21snmpd07:45:433
195239983,3cyclictest240-21systemd-journal07:55:003
195239981,3cyclictest0-21swapper/310:10:123
195239980,5cyclictest17998-21snmpd12:18:513
195239980,4cyclictest5801-21/usr/sbin/munin10:25:183
195199987,1cyclictest28-21ksoftirqd/209:30:162
195199986,1cyclictest61650irq/122-eno110:35:222
195199986,1cyclictest17998-21snmpd11:31:052
195199986,1cyclictest17998-21snmpd10:16:142
195199986,1cyclictest17998-21snmpd09:52:382
195199986,1cyclictest17998-21snmpd09:37:132
195199986,1cyclictest17998-21snmpd08:29:532
195199985,2cyclictest1895-21sh07:40:002
195199984,2cyclictest240-21systemd-journal12:15:002
195109987,1cyclictest9-21ksoftirqd/010:58:520
195109987,1cyclictest9-21ksoftirqd/009:40:000
195109987,0cyclictest9-21ksoftirqd/011:05:140
195109986,1cyclictest17998-21snmpd08:27:080
195109986,1cyclictest17998-21snmpd08:21:410
195109985,1cyclictest17998-21snmpd12:31:030
195109984,3cyclictest16861-21cron10:40:000
195109982,5cyclictest11397-21date08:00:000
195109981,6cyclictest21877-21munin-node10:24:020
195109981,5cyclictest24255-21wc07:15:210
195109981,3cyclictest26584-21perf10:10:000
195109981,1cyclictest8958-21wc09:00:200
195109980,7cyclictest31108-21ssh12:22:490
195109980,1cyclictest7631-21ssh09:45:020
195239976,1cyclictest3679-21ssh11:45:283
195239976,1cyclictest23609-21cat11:30:153
195239976,1cyclictest17998-21snmpd12:32:423
195239976,1cyclictest17998-21snmpd07:59:283
195239975,1cyclictest17998-21snmpd12:00:293
195239975,1cyclictest17998-21snmpd11:25:313
195239975,1cyclictest17998-21snmpd09:55:233
195239975,1cyclictest17998-21snmpd09:19:533
195239975,1cyclictest17998-21snmpd09:13:183
195239975,1cyclictest17998-21snmpd08:26:353
195239975,1cyclictest17998-21snmpd08:09:553
195239975,1cyclictest17998-21snmpd07:12:183
195239972,4cyclictest21040-21apt-get08:20:103
195239972,2cyclictest28632-21/usr/sbin/munin10:55:133
195239972,1cyclictest26202-21apt-get11:35:013
195239971,5cyclictest4287-21perf07:45:003
195239971,5cyclictest0-21swapper/309:41:253
195239970,7cyclictest24948-21kworker/u8:111:23:553
195239970,2cyclictest570-21nscd11:05:183
195239970,2cyclictest32473-21apt-get09:35:103
195199976,1cyclictest61650irq/122-eno112:00:192
195199976,1cyclictest61650irq/122-eno111:41:032
195199976,1cyclictest61650irq/122-eno111:35:122
195199976,1cyclictest61650irq/122-eno111:23:502
195199976,1cyclictest61650irq/122-eno111:04:412
195199976,1cyclictest61650irq/122-eno110:58:292
195199976,1cyclictest61650irq/122-eno110:24:252
195199976,1cyclictest61650irq/122-eno109:55:172
195199976,1cyclictest61650irq/122-eno109:16:032
195199976,0cyclictest61650irq/122-eno111:53:382
195199975,1cyclictest17998-21snmpd12:25:272
195199975,1cyclictest17998-21snmpd09:13:512
195199974,1cyclictest240-21systemd-journal08:39:592
195199970,6cyclictest21870-21wc08:20:142
195199970,4cyclictest0-21swapper/212:30:092
195199970,3cyclictest0-21swapper/210:00:102
195199970,2cyclictest0-21swapper/208:05:112
195149971,2cyclictest0-21swapper/108:00:151
195149971,1cyclictest0-21swapper/107:44:101
195149970,7cyclictest0-21swapper/107:27:571
195149970,6cyclictest0-21swapper/111:30:171
195149970,6cyclictest0-21swapper/111:16:491
195149970,6cyclictest0-21swapper/110:43:061
195149970,6cyclictest0-21swapper/108:37:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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