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2026-04-23 - 11:24
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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 Thu Apr 23, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
308512304274,20sleep20-21swapper/219:08:442
289892285255,20sleep10-21swapper/119:05:061
307282275243,22sleep00-21swapper/019:07:100
308672274241,22sleep30-21swapper/319:08:583
281382610,0sleep20-21swapper/221:14:202
306502600,0sleep00-21swapper/020:20:010
281922600,0sleep10-21swapper/121:52:281
294092580,0sleep10-21swapper/123:30:181
5502560,0sleep20-21swapper/223:32:352
8632550,0sleep30-21swapper/321:35:463
95142530,0sleep20-21swapper/200:35:502
152782530,0sleep10-21swapper/100:20:151
228992180,0sleep00-21swapper/023:45:340
273372170,1sleep20-21swapper/220:10:182
112192150,0sleep30-21swapper/321:23:223
27872140,0sleep30-21swapper/319:15:183
47772110,0sleep10-21swapper/122:17:141
9046290,0sleep10-21swapper/123:56:531
310909997,1cyclictest28-21ksoftirqd/220:00:012
310949980,2cyclictest12427-21ssh23:00:263
310879984,3cyclictest28041-21sh21:14:151
310879980,4cyclictest29575-21ssh21:15:121
310839984,2cyclictest275-21systemd-journal22:12:080
30667280,0sleep20-21swapper/221:54:212
13935280,0sleep00-21swapper/022:22:500
13441280,0sleep20-21swapper/222:41:462
12054280,0sleep00-21swapper/000:37:470
32304270,0sleep10-21swapper/122:34:081
310949973,3cyclictest3104-21awk23:15:113
310949973,3cyclictest275-21systemd-journal23:53:153
310949973,3cyclictest275-21systemd-journal00:15:213
310949973,3cyclictest0-21swapper/322:43:353
310949973,1cyclictest0-21swapper/322:20:013
310949972,3cyclictest275-21systemd-journal20:04:593
310909974,2cyclictest1583-21irqstats20:25:142
310909973,3cyclictest658-21snmpd00:13:432
310909973,3cyclictest304-21systemd-udevd22:25:562
310909973,3cyclictest275-21systemd-journal23:52:002
310909973,3cyclictest12883-21needreboot20:50:152
310909973,2cyclictest275-21systemd-journal22:24:382
310909973,1cyclictest0-21swapper/221:31:232
310909970,7cyclictest0-21swapper/223:29:142
310909970,4cyclictest15869-21grep22:05:012
310909970,2cyclictest6760-21/usr/sbin/munin19:25:132
310879972,3cyclictest275-21systemd-journal22:36:491
310879971,5cyclictest19593-21grep21:05:151
310879971,3cyclictest6002-21munin-run19:25:001
310839974,2cyclictest504-21dbus-daemon19:55:450
310839974,2cyclictest15656-21df_inode21:45:130
310839973,3cyclictest275-21systemd-journal21:05:100
310839973,3cyclictest275-21systemd-journal20:38:150
310839973,3cyclictest275-21systemd-journal20:30:010
310839973,2cyclictest275-21systemd-journal00:28:530
310949966,0cyclictest0-21swapper/323:35:183
310949966,0cyclictest0-21swapper/323:10:463
310949966,0cyclictest0-21swapper/322:55:163
310949966,0cyclictest0-21swapper/321:18:113
310949963,2cyclictest658-21snmpd23:42:073
310949963,2cyclictest658-21snmpd23:29:033
310949963,2cyclictest658-21snmpd21:00:143
310949963,2cyclictest658-21snmpd20:30:093
310949963,2cyclictest504-21dbus-daemon21:50:273
310949963,2cyclictest34-21ksoftirqd/300:30:023
310949963,2cyclictest275-21systemd-journal19:59:323
310949963,2cyclictest27415-21sshd22:30:233
310949963,2cyclictest27161-21ssh21:32:313
310949963,2cyclictest26083-21awk20:10:013
310949963,2cyclictest23271-21taskset22:47:573
310949963,2cyclictest23271-21taskset22:47:573
310949963,2cyclictest21263-21entropy23:45:133
310949963,2cyclictest20436-21timerwakeupswit23:05:203
310949963,2cyclictest18597-21sh21:46:333
310949963,2cyclictest17533-21expr22:25:143
310949963,2cyclictest14327-21cpuspeed_turbos20:55:133
310949963,2cyclictest12976-21ssh00:38:313
310949963,2cyclictest12432-11brltty21:56:423
310949963,2cyclictest0-21swapper/322:20:033
310949963,1cyclictest0-21swapper/323:30:203
310949963,1cyclictest0-21swapper/300:12:073
310949963,1cyclictest0-21swapper/300:02:273
310949962,3cyclictest658-21snmpd23:23:133
310949962,3cyclictest658-21snmpd22:10:053
310949962,3cyclictest658-21snmpd21:42:563
310949962,3cyclictest658-21snmpd20:50:023
310949962,3cyclictest658-21snmpd20:48:143
310949962,3cyclictest658-21snmpd20:26:043
310949962,3cyclictest658-21snmpd20:15:223
310949962,3cyclictest658-21snmpd19:50:393
310949962,3cyclictest658-21snmpd19:38:143
310949962,3cyclictest658-21snmpd19:34:393
310949962,3cyclictest658-21snmpd19:20:263
310949962,3cyclictest658-21snmpd19:11:533
310949962,3cyclictest504-21dbus-daemon22:40:003
310949962,3cyclictest27009-21irqstats20:10:153
310949962,3cyclictest26674-21cat22:50:133
310949962,3cyclictest23860-21awk00:25:173
310949962,3cyclictest0-21swapper/322:08:453
310949962,3cyclictest0-21swapper/321:05:103
310949961,4cyclictest0-21swapper/300:05:123
310949960,5cyclictest18491-21rm00:22:073
310949960,5cyclictest13716-21apt-key21:25:003
310949960,3cyclictest7634-21cpuspeed20:40:123
310949960,3cyclictest501-21in:imuxsock22:00:213
310909966,0cyclictest0-21swapper/222:00:002
310909964,1cyclictest24080-21/usr/sbin/munin20:05:152
310909963,2cyclictest9161-21cat19:30:152
310909963,2cyclictest8454-21sh23:37:142
310909963,2cyclictest658-21snmpd23:21:122
310909963,2cyclictest658-21snmpd23:06:032
310909963,2cyclictest504-21dbus-daemon23:44:052
310909963,2cyclictest3130-21sh22:15:592
310909963,2cyclictest30253-21basename21:15:162
310909963,2cyclictest30250-21sh22:51:552
310909963,2cyclictest26890-21rm00:07:512
310909963,2cyclictest22616-21ls20:00:182
310909963,2cyclictest17504-21sh00:21:222
310909963,2cyclictest14665-21sh00:00:182
310909963,1cyclictest0-21swapper/222:57:162
310909962,3cyclictest7568-21find20:40:122
310909962,3cyclictest658-21snmpd22:32:322
310909962,3cyclictest658-21snmpd21:46:252
310909962,3cyclictest658-21snmpd20:39:552
310909962,3cyclictest658-21snmpd20:20:362
310909962,3cyclictest658-21snmpd19:46:392
310909962,3cyclictest658-21snmpd00:30:122
310909962,3cyclictest29934-21cat20:15:202
310909962,3cyclictest275-21systemd-journal21:38:152
310909962,3cyclictest275-21systemd-journal19:55:012
310909962,3cyclictest16783-21expr21:00:132
310909962,1cyclictest51250irq/139-enp4s0-23:15:592
310909962,1cyclictest0-21swapper/222:48:512
310909962,1cyclictest0-21swapper/222:48:512
310909962,1cyclictest0-21swapper/200:15:102
310909961,3cyclictest275-21systemd-journal20:33:182
310909961,1cyclictest141rcu_preempt21:45:012
310909960,6cyclictest26265-21ssh00:26:452
310909960,6cyclictest0-21swapper/221:28:422
310909960,6cyclictest0-21swapper/221:09:362
310909960,3cyclictest16194-21munin-run21:00:012
310909960,2cyclictest27188-21/usr/sbin/munin23:10:192
310909960,2cyclictest149650/usr/sbin/munin22:35:152
310879964,2cyclictest25136-21cron22:30:011
310879964,1cyclictest51050irq/138-enp4s0-23:45:001
310879964,1cyclictest275-21systemd-journal20:55:241
310879963,2cyclictest5832-21ssh22:56:441
310879963,2cyclictest491-21systemd-logind22:20:021
310879963,2cyclictest275-21systemd-journal19:12:151
310879963,2cyclictest24923-21expr22:10:121
310879963,2cyclictest24913-21sort20:05:161
310879963,2cyclictest24856-21sh23:27:431
310879963,2cyclictest21441-21gltestperf23:45:141
310879963,2cyclictest14981-21sh23:21:331
310879963,2cyclictest13108-21chrt00:38:371
310879963,2cyclictest10510-21rm22:00:561
310879962,3cyclictest658-21snmpd22:45:451
310879962,3cyclictest658-21snmpd22:45:451
310879962,3cyclictest658-21snmpd21:45:251
310879962,3cyclictest658-21snmpd19:45:541
310879962,3cyclictest658-21snmpd19:40:211
310879962,3cyclictest658-21snmpd19:16:161
310879962,3cyclictest658-21snmpd00:05:011
310879962,3cyclictest6228-21cat21:20:131
310879962,3cyclictest31733-21cat21:35:141
310879962,3cyclictest30868-21ls20:20:131
310879962,3cyclictest275-21systemd-journal21:01:151
310879962,3cyclictest23749-21ntpq00:25:171
310879962,3cyclictest1570-21cat20:25:141
310879962,1cyclictest0-21swapper/121:30:151
310879962,1cyclictest0-21swapper/100:30:131
310879961,2cyclictest19809-21ssh21:28:181
310879961,1cyclictest141rcu_preempt23:00:271
310879960,5cyclictest10061-21grep22:40:151
310879960,3cyclictest6863-21/usr/sbin/munin21:40:111
310879960,0cyclictest0-21swapper/121:57:431
310839966,0cyclictest0-21swapper/021:16:030
310839963,2cyclictest9094-21hwlatdetect19:30:150
310839963,2cyclictest839-21cron19:15:010
310839963,2cyclictest6927-21ssh21:59:340
310839963,2cyclictest658-21snmpd23:55:130
310839963,2cyclictest658-21snmpd23:37:040
310839963,2cyclictest658-21snmpd23:25:220
310839963,2cyclictest658-21snmpd20:07:330
310839963,2cyclictest617-21cut20:25:010
310839963,2cyclictest504-21dbus-daemon20:50:230
310839963,2cyclictest504-21dbus-daemon00:17:010
310839963,2cyclictest501-21in:imuxsock20:11:120
310839963,2cyclictest3234-21grep22:35:210
310839963,2cyclictest275-21systemd-journal19:35:160
310839963,2cyclictest23840-21cron20:05:000
310839963,2cyclictest16072-21needreboot19:45:160
310839963,1cyclictest0-21swapper/000:01:310
310839962,3cyclictest8351-21cat20:40:160
310839962,3cyclictest7210-21expr21:40:130
310839962,3cyclictest658-21snmpd23:14:070
310839962,3cyclictest658-21snmpd22:53:140
310839962,3cyclictest658-21snmpd21:53:240
310839962,3cyclictest658-21snmpd21:30:360
310839962,3cyclictest658-21snmpd19:28:210
310839962,3cyclictest658-21snmpd19:23:020
310839962,3cyclictest5143-21sshd23:15:340
310839962,3cyclictest275-21systemd-journal20:48:440
310839962,3cyclictest275-21systemd-journal19:15:150
310839962,3cyclictest19624-21cat23:05:150
310839962,3cyclictest12287-21grep23:20:150
310839962,3cyclictest1052-21fschecks_time22:15:140
310839962,1cyclictest0-21swapper/023:00:150
310839962,1cyclictest0-21swapper/022:43:450
310839962,1cyclictest0-21swapper/000:23:110
310839960,6cyclictest0-21swapper/021:35:390
310839960,5cyclictest18364-21ntp_states22:25:180
310839960,4cyclictest20671-21diskmemload23:43:210
310839960,4cyclictest20671-21diskmemload23:32:040
310839960,4cyclictest20671-21diskmemload22:33:390
310839960,4cyclictest20671-21diskmemload00:05:180
310839960,3cyclictest29817-21hwlatdetect23:50:140
310839960,2cyclictest20671-21diskmemload22:00:140
310839960,0cyclictest0-21swapper/022:57:410
310949952,2cyclictest6929-21cat19:25:153
310949952,2cyclictest6344-21sshd23:55:163
310949952,2cyclictest15520-21expr19:45:123
310949952,2cyclictest14125-21sendmail_mailst19:40:183
310949951,3cyclictest658-21snmpd20:35:093
310949951,3cyclictest50850irq/136-enp4s0-21:10:123
310949951,3cyclictest30783-21apt-get20:20:123
310909952,2cyclictest658-21snmpd19:10:022
310909952,2cyclictest5439-21cpuspeed_turbos23:55:122
310909952,2cyclictest4561-21tail19:20:132
310909952,2cyclictest20755-21ssh23:45:082
310909952,2cyclictest13224-21expr19:40:132
310909952,2cyclictest11303-21cat23:00:142
310909952,2cyclictest11224-21tune2fs19:35:142
310909952,2cyclictest10243-21tune2fs20:45:132
310909952,1cyclictest0-21swapper/222:10:062
310909952,1cyclictest0-21swapper/222:05:042
310909952,1cyclictest0-21swapper/221:20:002
310909951,3cyclictest658-21snmpd19:15:052
310879953,1cyclictest5688-21expr20:35:131
310879952,2cyclictest658-21snmpd23:35:101
310879952,2cyclictest658-21snmpd19:25:021
310879952,2cyclictest504-21dbus-daemon20:35:011
310879952,2cyclictest30796-21gltestperf00:10:151
310879952,2cyclictest28706-21tr20:15:111
310879952,2cyclictest26493-21tr20:10:121
310879952,2cyclictest19860-21expr19:55:141
310879952,2cyclictest18652-21ssh23:05:001
310879952,2cyclictest18446-21pmu-power19:50:181
310879952,2cyclictest13461-21ssh00:00:021
310879952,2cyclictest11228-21sed20:45:201
310879952,1cyclictest0-21swapper/123:15:011
310879952,1cyclictest0-21swapper/100:15:031
310879951,3cyclictest658-21snmpd19:30:121
310879951,3cyclictest29121-21/usr/sbin/munin23:50:171
310879951,3cyclictest28763-21ssh22:50:461
310879951,3cyclictest22047-21grep20:00:141
310879951,3cyclictest12676-21cat20:50:141
310879951,3cyclictest11197-21tune2fs19:35:141
310879951,3cyclictest0-21swapper/122:05:121
310879951,1cyclictest27232-21ssh23:10:101
310879950,2cyclictest7556-21/usr/sbin/munin20:40:151
310839953,2cyclictest12-21ksoftirqd/021:25:110
310839953,1cyclictest180542sleep022:45:080
310839953,1cyclictest180542sleep022:45:080
310839952,2cyclictest658-21snmpd20:55:070
310839952,2cyclictest6263-21kernelversion21:20:140
310839952,2cyclictest3216-21cat20:30:130
310839952,2cyclictest29998-21ssh00:10:020
310839952,2cyclictest21436-21expr21:10:130
310839952,2cyclictest17644-21tr21:00:190
310839952,2cyclictest17312-21needreboot22:05:160
310839952,2cyclictest13657-21cat19:40:150
310839951,3cyclictest30932-21rm00:30:010
310839951,3cyclictest17871-21tune2fs19:50:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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