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2026-04-04 - 00:47
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackaslot8.osadl.org (updated Fri Apr 03, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135412291265,17sleep20-21swapper/207:08:362
136722274244,20sleep00-21swapper/007:09:590
136612269238,21sleep10-21swapper/107:09:521
134872261229,21sleep30-21swapper/307:07:533
206542980,0sleep30-21swapper/310:18:053
137792640,0sleep30-21swapper/311:50:383
223522610,0sleep10-21swapper/111:17:131
149382600,0sleep20-21swapper/212:30:172
67022540,0sleep00-21swapper/009:30:200
148182210,0sleep10-21swapper/111:31:581
248322200,0sleep20-21swapper/209:22:052
240512190,0sleep00-21swapper/010:59:060
169972170,0sleep00-21swapper/010:55:000
153672170,0sleep30-21swapper/311:32:243
296742140,2sleep122-21ksoftirqd/109:44:551
289922140,0sleep20-21swapper/207:40:142
215612130,0sleep10-21swapper/112:35:011
187342130,0sleep20-21swapper/209:38:062
208442110,0sleep00-21swapper/012:34:350
1378099119,1cyclictest28-21ksoftirqd/211:20:002
13780991110,1cyclictest28-21ksoftirqd/211:55:002
1378099109,1cyclictest28-21ksoftirqd/207:20:012
4567290,0sleep30-21swapper/312:24:463
26412290,0sleep30-21swapper/311:39:333
137809998,1cyclictest28-21ksoftirqd/212:40:012
137809996,2cyclictest28-21ksoftirqd/208:20:012
137739994,4cyclictest658-21snmpd10:39:580
137839986,1cyclictest111402sleep310:31:293
137809987,1cyclictest28-21ksoftirqd/210:20:012
137809982,1cyclictest141rcu_preempt12:10:112
137809980,1cyclictest28-21ksoftirqd/211:05:102
6282270,1sleep3341ksoftirqd/309:50:143
32159270,1sleep20-21swapper/210:25:122
25843270,0sleep30-21swapper/311:00:133
17582270,0sleep20-21swapper/211:34:072
137839975,2cyclictest34-21ksoftirqd/308:05:013
137839974,2cyclictest275-21systemd-journal11:21:443
137839973,3cyclictest658-21snmpd11:19:133
137839973,3cyclictest658-21snmpd11:11:593
137839973,3cyclictest275-21systemd-journal10:14:233
137839973,2cyclictest674-21lldpd09:11:493
137839973,1cyclictest0-21swapper/310:39:383
137809976,1cyclictest28-21ksoftirqd/211:50:002
137809976,1cyclictest28-21ksoftirqd/211:40:002
137809975,1cyclictest28-21ksoftirqd/211:55:022
137809972,5cyclictest141rcu_preempt11:22:282
137809971,4cyclictest141rcu_preempt10:52:442
137809971,4cyclictest141rcu_preempt10:30:322
137789975,1cyclictest22291-21irqstats07:25:131
137789973,3cyclictest4673-21sshd09:49:141
137789973,3cyclictest28095-21cron12:00:001
137789973,3cyclictest28033-21sshd07:38:521
137789972,4cyclictest658-21snmpd12:21:401
137789972,3cyclictest275-21systemd-journal10:01:521
137789972,3cyclictest21224-21awk09:40:001
137739973,3cyclictest658-21snmpd09:22:070
137739973,2cyclictest658-21snmpd09:44:330
137739970,6cyclictest32651-21cat10:05:220
137739970,1cyclictest26446-21ssh11:39:330
1343270,1sleep31350-21gltestperf10:45:153
1289270,0sleep20-21swapper/211:05:002
137839966,0cyclictest0-21swapper/312:33:163
137839966,0cyclictest0-21swapper/310:41:243
137839966,0cyclictest0-21swapper/309:15:383
137839963,2cyclictest8787-21ssh10:50:053
137839963,2cyclictest8484-21ssh12:26:253
137839963,2cyclictest663-21runrttasks10:00:473
137839963,2cyclictest658-21snmpd10:07:243
137839963,2cyclictest658-21snmpd09:40:033
137839963,2cyclictest658-21snmpd08:30:363
137839963,2cyclictest6100-21ssh10:29:013
137839963,2cyclictest501-21in:imuxsock08:15:013
137839963,2cyclictest3969-21systemctl11:25:183
137839963,2cyclictest34-21ksoftirqd/308:10:013
137839963,2cyclictest32351-21sshd11:42:443
137839963,2cyclictest1932-21systemctl07:50:173
137839963,2cyclictest18178-21idleruntime10:55:143
137839963,2cyclictest14914-21diskstats09:55:143
137839963,2cyclictest13390-21grep08:15:193
137839963,2cyclictest11177-21cron11:50:003
137839963,1cyclictest0-21swapper/309:32:333
137839962,3cyclictest658-21snmpd12:16:453
137839962,3cyclictest658-21snmpd09:36:363
137839962,3cyclictest658-21snmpd09:26:493
137839962,3cyclictest658-21snmpd08:20:123
137839962,3cyclictest658-21snmpd07:48:373
137839962,3cyclictest31724-21cat09:45:193
137839962,3cyclictest30871-21sendmail_mailst08:55:173
137839962,3cyclictest18243-21sshd08:29:073
137839962,3cyclictest1707-21wc09:05:013
137839962,1cyclictest141rcu_preempt12:35:183
137839962,1cyclictest0-21swapper/311:05:593
137839961,3cyclictest275-21systemd-journal10:20:013
137839960,6cyclictest0-21swapper/312:05:213
137839960,5cyclictest2576-21memory09:05:163
137839960,4cyclictest0-21swapper/311:55:193
137839960,2cyclictest30449-21timerwakeupswit12:00:193
137809966,0cyclictest281ksoftirqd/208:45:002
137809966,0cyclictest0-21swapper/210:43:452
137809966,0cyclictest0-21swapper/209:50:212
137809963,2cyclictest8547-21sshd09:31:412
137809963,2cyclictest658-21snmpd08:14:032
137809963,2cyclictest658-21snmpd07:37:162
137809963,2cyclictest658-21snmpd07:25:132
137809963,2cyclictest550-21ssh12:02:112
137809963,2cyclictest31060-21ssh09:25:282
137809963,2cyclictest22003-21apt-get09:40:112
137809963,2cyclictest19475-21head08:30:162
137809963,2cyclictest17375-21taskset11:14:452
137809963,2cyclictest15013-21tune2fs09:55:152
137809963,2cyclictest1448-21cat10:45:162
137809963,1cyclictest0-21swapper/210:10:242
137809962,3cyclictest658-21snmpd12:07:122
137809962,3cyclictest658-21snmpd11:40:242
137809962,3cyclictest658-21snmpd10:06:392
137809962,3cyclictest658-21snmpd09:11:402
137809962,3cyclictest658-21snmpd09:06:582
137809962,3cyclictest658-21snmpd09:00:372
137809962,3cyclictest658-21snmpd08:59:032
137809962,3cyclictest658-21snmpd08:49:272
137809962,3cyclictest658-21snmpd07:13:372
137809962,3cyclictest275-21systemd-journal08:52:092
137809962,3cyclictest22665-21grep12:15:192
137809962,1cyclictest0-21swapper/210:35:172
137809961,1cyclictest141rcu_preempt09:45:122
137809960,3cyclictest13134-21gltestperf09:15:142
137809960,1cyclictest141rcu_preempt12:25:122
137809960,0cyclictest0-21swapper/210:23:032
137789966,0cyclictest0-21swapper/110:25:331
137789966,0cyclictest0-21swapper/110:18:261
137789964,1cyclictest16754-21munin-run10:55:011
137789963,2cyclictest658-21snmpd11:35:301
137789963,2cyclictest658-21snmpd10:40:371
137789963,2cyclictest5886-21cat08:00:141
137789963,2cyclictest5658-21ssh11:07:061
137789963,2cyclictest2533-21ssh10:06:561
137789963,2cyclictest21479-21sh09:59:231
137789963,2cyclictest19827-21ssh10:55:471
137789963,2cyclictest10492-21sh11:49:281
137789963,2cyclictest10429-21sh11:29:571
137789962,3cyclictest6924-21rm10:48:491
137789962,3cyclictest6742-21sed09:30:201
137789962,3cyclictest658-21snmpd12:38:581
137789962,3cyclictest658-21snmpd11:21:321
137789962,3cyclictest658-21snmpd10:23:161
137789962,3cyclictest658-21snmpd09:51:241
137789962,3cyclictest658-21snmpd09:05:401
137789962,3cyclictest658-21snmpd08:57:571
137789962,3cyclictest658-21snmpd08:45:031
137789962,3cyclictest658-21snmpd08:31:481
137789962,3cyclictest658-21snmpd08:15:561
137789962,3cyclictest658-21snmpd08:10:501
137789962,3cyclictest658-21snmpd08:08:111
137789962,3cyclictest658-21snmpd07:50:111
137789962,3cyclictest658-21snmpd07:34:381
137789962,3cyclictest504-21dbus-daemon07:17:261
137789962,3cyclictest275-21systemd-journal10:37:441
137789962,3cyclictest27237-21grep11:00:201
137789962,3cyclictest19581-21cat07:20:121
137789962,3cyclictest12804-21expr09:15:111
137789962,2cyclictest674-21lldpd12:13:121
137789962,1cyclictest0-21swapper/109:20:141
137789961,4cyclictest7269-21sh12:05:571
137789960,6cyclictest0-21swapper/112:15:151
137789960,6cyclictest0-21swapper/111:53:141
137789960,3cyclictest1523-21turbostat09:05:011
137789960,2cyclictest8159-21ntp_states10:10:181
137789960,0cyclictest0-21swapper/109:12:461
137739966,0cyclictest0-21swapper/011:21:250
137739966,0cyclictest0-21swapper/011:11:550
137739963,2cyclictest9458-21ssh10:10:520
137739963,2cyclictest658-21snmpd10:01:590
137739963,2cyclictest658-21snmpd09:45:390
137739963,2cyclictest560-21gdbus10:20:010
137739963,2cyclictest5505-21cat12:05:150
137739963,2cyclictest31521-21ssh12:20:330
137739963,2cyclictest30582-21uptime12:00:190
137739963,2cyclictest28691-21readlink08:50:180
137739963,2cyclictest27021-21taskset07:35:160
137739963,2cyclictest25352-21ssh12:36:260
137739963,2cyclictest23076-21ssh11:56:090
137739963,2cyclictest2099-21sh11:44:230
137739963,2cyclictest1749-21ssh10:25:400
137739963,2cyclictest17232-21sh09:36:570
137739963,2cyclictest15144-21hddtemp_smartct09:55:150
137739963,2cyclictest14699-21sh10:34:160
137739963,2cyclictest0-21swapper/011:45:100
137739962,3cyclictest658-21snmpd12:18:100
137739962,3cyclictest658-21snmpd12:12:120
137739962,3cyclictest658-21snmpd11:32:530
137739962,3cyclictest658-21snmpd11:28:260
137739962,3cyclictest658-21snmpd09:01:250
137739962,3cyclictest658-21snmpd08:25:150
137739962,3cyclictest658-21snmpd07:56:350
137739962,3cyclictest29105-21cat07:40:160
137739962,3cyclictest18387-21cat11:15:110
137739962,3cyclictest16240-21cut07:15:010
137739962,3cyclictest14812-21cat08:20:150
137739962,3cyclictest13538-21ntpq09:15:160
137739962,3cyclictest12829-21ntpq08:15:160
137739962,3cyclictest1-21systemd07:29:310
137739962,2cyclictest28089-21ssh10:22:220
137739962,2cyclictest275-21systemd-journal11:04:430
137739962,1cyclictest0-21swapper/012:26:500
137739961,4cyclictest0-21swapper/010:42:220
137739961,4cyclictest0-21swapper/009:10:120
137739961,3cyclictest31347-21rm09:25:420
137739961,3cyclictest275-21systemd-journal08:14:010
137739960,6cyclictest0-21swapper/009:52:100
137739960,0cyclictest0-21swapper/011:50:460
137839953,1cyclictest663-21runrttasks12:10:103
137839952,2cyclictest658-21snmpd07:35:503
137839952,2cyclictest658-21snmpd07:20:133
137839952,2cyclictest3502-21head07:55:133
137839952,2cyclictest28164-21dump-pmu-power07:44:563
137839952,2cyclictest24467-21smartctl07:30:133
137839952,2cyclictest23114-21grep08:40:123
137839952,2cyclictest21868-21expr07:25:123
137839952,2cyclictest21365-21gltestperf08:35:133
137839952,2cyclictest21199-21expr09:20:123
137839952,2cyclictest16525-21head07:15:013
137839952,2cyclictest14377-21df07:10:133
137839951,3cyclictest560-21gdbus08:50:033
137839951,2cyclictest25627-21expr08:45:113
137809954,1cyclictest28-21ksoftirqd/207:50:012
137809954,1cyclictest28-21ksoftirqd/207:20:012
137809953,1cyclictest5199-21cat08:00:112
137809952,2cyclictest8826-21sort08:05:202
137809952,2cyclictest658-21snmpd07:45:112
137809952,2cyclictest3619-21if_enp4s007:55:142
137809952,2cyclictest24545-21cat07:30:132
137809952,2cyclictest23087-21expr10:00:122
137809952,2cyclictest22792-21latency_hist08:40:002
137809952,2cyclictest17557-21cat10:55:122
137809952,2cyclictest16479-21cpuspeed_turbos08:25:122
137809952,1cyclictest674-21lldpd08:21:492
137809952,1cyclictest0-21swapper/212:20:072
137809951,3cyclictest658-21snmpd11:25:142
137789953,1cyclictest32355-21taskset07:47:091
137789953,1cyclictest29299-21df_inode12:00:121
137789953,1cyclictest10586-21hddtemp_smartct11:10:141
137789952,2cyclictest658-21snmpd09:25:071
137789952,2cyclictest658-21snmpd08:35:031
137789952,2cyclictest658-21snmpd07:55:081
137789952,2cyclictest5557-21tr12:25:131
137789952,2cyclictest29215-21cat07:40:161
137789952,2cyclictest27818-21cat08:50:121
137789952,2cyclictest27539-21ssh11:40:141
137789952,2cyclictest275-21systemd-journal08:27:291
137789952,2cyclictest23872-21wc08:40:151
137789952,2cyclictest14522-21grep07:10:141
137789950,4cyclictest8018-21cpuspeed_turbos10:30:111
137789950,3cyclictest275-21systemd-journal08:23:431
137739953,1cyclictest14952chrt11:05:060
137739952,2cyclictest7491-21cat08:05:110
137739952,2cyclictest498-21dpkg07:50:010
137739952,2cyclictest25634-21cat08:45:110
137739952,2cyclictest25301-21grep07:30:180
137739952,2cyclictest23252-21expr08:40:120
137739952,2cyclictest20920-21cpuspeed_turbos08:35:120
137739952,2cyclictest19437-21grep07:20:110
137739952,2cyclictest1843-21cat09:05:110
137739952,2cyclictest1732-21ssh10:45:180
137739952,2cyclictest16479-21uniq07:15:010
137739951,3cyclictest658-21snmpd08:32:030
137739951,3cyclictest658-21snmpd08:00:020
137739951,3cyclictest31325-21cat07:45:140
137739951,3cyclictest30408-21cat08:55:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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