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2026-04-21 - 07:00
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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 Tue Apr 21, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
95872321290,21sleep10-21swapper/119:05:461
97492293240,16sleep20-21swapper/219:07:362
98202272242,19sleep00-21swapper/019:08:310
99012257225,21sleep30-21swapper/319:09:343
224802600,0sleep30-21swapper/300:20:463
128232580,0sleep30-21swapper/321:17:143
282532570,0sleep10-21swapper/119:45:191
224732570,0sleep30-21swapper/321:23:183
98182560,0sleep10-21swapper/122:34:331
60862560,0sleep00-21swapper/023:50:430
307432560,0sleep20-21swapper/223:46:012
168292560,0sleep20-21swapper/220:35:022
256942540,0sleep00-21swapper/023:43:270
85112210,0sleep00-21swapper/000:12:380
51312200,0sleep00-21swapper/021:51:390
46582200,0sleep30-21swapper/323:30:173
302892190,0sleep00-21swapper/000:05:380
71432180,0sleep10-21swapper/121:33:341
322812150,0sleep00-21swapper/021:29:320
159192140,0sleep20-21swapper/200:36:542
327062130,0sleep20-21swapper/221:49:172
273492130,0sleep10-21swapper/100:24:361
243602130,0sleep00-21swapper/022:43:040
179792130,0sleep00-21swapper/021:40:130
168182120,0sleep20-21swapper/221:59:222
100509998,1cyclictest19931-21awk00:40:013
100419990,8cyclictest26209-21apt19:45:001
100369990,8cyclictest32467-21ssh22:08:330
29425280,0sleep10-21swapper/122:06:101
25714280,0sleep30-21swapper/321:25:143
21544280,0sleep10-21swapper/123:00:391
16967280,0sleep00-21swapper/021:39:490
100509983,3cyclictest275-21systemd-journal22:35:013
100459986,1cyclictest26268-21rm23:04:222
100459981,1cyclictest141rcu_preempt20:50:092
100459980,2cyclictest23155-21ssh22:02:402
100419987,1cyclictest22-21ksoftirqd/121:45:011
100369986,1cyclictest12-21ksoftirqd/022:25:010
100369984,3cyclictest275-21systemd-journal23:33:140
100369980,1cyclictest141rcu_preempt19:40:130
100509973,3cyclictest658-21snmpd20:37:383
100509973,3cyclictest275-21systemd-journal22:30:013
100509973,3cyclictest275-21systemd-journal20:55:153
100509973,3cyclictest12954-21cut19:15:013
100509972,3cyclictest275-21systemd-journal00:00:003
100459973,3cyclictest504-21dbus-daemon21:40:012
100459973,3cyclictest275-21systemd-journal00:15:002
100459973,3cyclictest18194-21packagekitd22:05:062
100459973,2cyclictest275-21systemd-journal23:15:012
100459972,4cyclictest0-21swapper/222:10:122
100459972,3cyclictest275-21systemd-journal00:00:062
100459970,6cyclictest29479-21taskset21:27:222
100419976,1cyclictest0-21swapper/122:59:031
100419975,2cyclictest22-21ksoftirqd/122:30:011
100419973,3cyclictest658-21snmpd23:25:061
100419973,3cyclictest275-21systemd-journal21:00:001
100419973,3cyclictest275-21systemd-journal00:32:421
100419973,3cyclictest275-21systemd-journal00:07:551
100419970,3cyclictest21164-21munin-run20:45:001
100369973,3cyclictest658-21snmpd22:47:140
100369973,3cyclictest504-21dbus-daemon20:28:080
100369973,3cyclictest29381-21diskstats19:50:160
100369970,4cyclictest0-21swapper/023:03:360
100369970,3cyclictest2310-21perf22:30:010
100369970,1cyclictest27785-21cstates23:05:120
100369970,0cyclictest0-21swapper/020:10:140
18657260,0sleep10-21swapper/123:39:191
100509966,0cyclictest0-21swapper/323:50:353
100509966,0cyclictest0-21swapper/322:51:093
100509966,0cyclictest0-21swapper/300:26:033
100509966,0cyclictest0-21swapper/300:26:033
100509966,0cyclictest0-21swapper/300:12:423
100509963,2cyclictest674-21lldpd22:21:233
100509963,2cyclictest663-21runrttasks19:23:213
100509963,2cyclictest658-21snmpd00:05:493
100509963,2cyclictest504-21dbus-daemon22:00:013
100509963,2cyclictest5030-21ssh22:11:003
100509963,2cyclictest3940-21ssh00:30:073
100509963,2cyclictest31550-21rm23:26:473
100509963,2cyclictest275-21systemd-journal22:57:453
100509963,2cyclictest275-21systemd-journal21:02:253
100509963,2cyclictest22064-21ssh22:41:183
100509963,2cyclictest16632-21ssh23:17:533
100509963,2cyclictest1373-21date21:50:023
100509963,2cyclictest13664-21ssh21:56:533
100509963,1cyclictest0-21swapper/321:42:403
100509962,3cyclictest658-21snmpd23:40:073
100509962,3cyclictest658-21snmpd23:20:123
100509962,3cyclictest658-21snmpd23:12:153
100509962,3cyclictest658-21snmpd22:45:033
100509962,3cyclictest658-21snmpd20:54:203
100509962,3cyclictest658-21snmpd20:49:263
100509962,3cyclictest658-21snmpd20:09:423
100509962,3cyclictest658-21snmpd19:46:243
100509962,3cyclictest658-21snmpd19:37:283
100509962,3cyclictest560-21gdbus21:35:053
100509962,3cyclictest560-21gdbus20:45:013
100509962,3cyclictest28879-21cat23:45:153
100509962,3cyclictest275-21systemd-journal20:35:003
100509962,3cyclictest275-21systemd-journal20:30:003
100509962,3cyclictest275-21systemd-journal19:32:423
100509962,3cyclictest12860-21ntpq23:35:163
100509962,3cyclictest12240-21ls00:15:113
100509962,3cyclictest12193-21expr23:55:113
100509962,1cyclictest0-21swapper/323:08:183
100509962,1cyclictest0-21swapper/323:01:593
100509962,1cyclictest0-21swapper/321:30:203
100509961,1cyclictest7709-21apt-get20:15:123
100509960,6cyclictest0-21swapper/321:50:043
100459964,2cyclictest28-21ksoftirqd/222:20:132
100459964,1cyclictest26338-21latency_hist19:45:002
100459963,2cyclictest6312-21sh21:32:552
100459963,2cyclictest4857-21ssh21:51:262
100459963,2cyclictest29730-21ssh23:05:422
100459963,2cyclictest21940-21ssh21:42:172
100459963,2cyclictest15877-21head19:20:152
100459963,2cyclictest14400-21ssh23:35:592
100459963,2cyclictest0-21swapper/200:21:162
100459962,4cyclictest28-21ksoftirqd/221:02:252
100459962,3cyclictest658-21snmpd23:32:062
100459962,3cyclictest658-21snmpd23:27:492
100459962,3cyclictest658-21snmpd22:56:022
100459962,3cyclictest658-21snmpd22:41:382
100459962,3cyclictest658-21snmpd20:59:322
100459962,3cyclictest658-21snmpd20:07:062
100459962,3cyclictest658-21snmpd20:01:482
100459962,3cyclictest658-21snmpd19:51:212
100459962,3cyclictest658-21snmpd19:32:512
100459962,3cyclictest4253-21expr23:50:132
100459962,3cyclictest3884-21grep23:10:142
100459962,3cyclictest275-21systemd-journal19:37:412
100459962,3cyclictest13173-21cat20:25:152
100459962,3cyclictest12608-21sed22:35:242
100459962,3cyclictest11431-21which19:10:192
100459962,3cyclictest0-21swapper/222:15:372
100459962,1cyclictest141rcu_preempt20:40:112
100459962,1cyclictest0-21swapper/222:30:032
100459960,6cyclictest0-21swapper/223:57:172
100459960,1cyclictest0-21swapper/200:07:062
100459960,0cyclictest0-21swapper/222:29:452
100459960,0cyclictest0-21swapper/221:15:232
100419966,0cyclictest0-21swapper/121:50:371
100419964,1cyclictest22-21ksoftirqd/122:00:011
100419963,2cyclictest9839-21expr21:35:121
100419963,2cyclictest8752-21sshd23:52:551
100419963,2cyclictest658-21snmpd23:07:101
100419963,2cyclictest658-21snmpd21:18:241
100419963,2cyclictest658-21snmpd21:09:351
100419963,2cyclictest586-21sshd19:58:151
100419963,2cyclictest4604-21ssh23:10:201
100419963,2cyclictest3239-21/usr/sbin/munin20:05:151
100419963,2cyclictest30821-21rm21:28:251
100419963,2cyclictest275-21systemd-journal20:27:431
100419963,2cyclictest275-21systemd-journal00:36:271
100419963,2cyclictest26669-21cat21:45:151
100419963,2cyclictest24940-21sshd23:42:521
100419963,2cyclictest19731-40sh00:00:001
100419963,2cyclictest17458-21sh21:20:151
100419963,2cyclictest14424-21rm00:15:521
100419962,3cyclictest658-21snmpd23:32:541
100419962,3cyclictest658-21snmpd20:31:551
100419962,3cyclictest658-21snmpd20:21:191
100419962,3cyclictest658-21snmpd20:15:081
100419962,3cyclictest504-21dbus-daemon22:15:201
100419962,3cyclictest504-21dbus-daemon00:26:021
100419962,3cyclictest504-21dbus-daemon00:26:021
100419962,3cyclictest4236-21expr00:10:141
100419962,3cyclictest15563-21ls19:20:121
100419962,3cyclictest11697-21cat22:35:171
100419962,2cyclictest275-21systemd-journal23:17:481
100419962,2cyclictest12956-21ssh21:56:201
100419961,3cyclictest275-21systemd-journal22:12:391
100419960,6cyclictest0-21swapper/123:22:521
100419960,6cyclictest0-21swapper/122:45:281
100419960,3cyclictest674-21lldpd22:23:121
100419960,0cyclictest0-21swapper/122:52:191
100369963,2cyclictest9640-21grep21:15:170
100369963,2cyclictest658-21snmpd23:21:240
100369963,2cyclictest658-21snmpd20:19:190
100369963,2cyclictest658-21snmpd00:00:170
100369963,2cyclictest6055-21ssh22:51:210
100369963,2cyclictest560-21gdbus20:30:060
100369963,2cyclictest32759-21ssh23:27:440
100369963,2cyclictest30312-21/usr/sbin/munin21:05:150
100369963,2cyclictest275-21systemd-journal20:46:540
100369963,2cyclictest275-21systemd-journal19:20:350
100369963,2cyclictest17886-21ssh23:58:410
100369963,2cyclictest16854-21ssh00:37:390
100369963,2cyclictest12694-21cat00:15:130
100369963,2cyclictest11783-21taskset20:23:160
100369963,2cyclictest1166-21ssh23:48:150
100369962,3cyclictest658-21snmpd23:38:180
100369962,3cyclictest658-21snmpd21:03:060
100369962,3cyclictest658-21snmpd19:15:440
100369962,3cyclictest658-21snmpd19:12:170
100369962,3cyclictest560-21gdbus23:15:000
100369962,3cyclictest31457-21cat19:55:130
100369962,3cyclictest275-21systemd-journal19:48:160
100369962,3cyclictest22977-21ntpq19:35:170
100369962,3cyclictest20776-21grep00:20:140
100369962,3cyclictest17316-21cat20:35:130
100369962,3cyclictest10938-21cat22:15:130
100369962,2cyclictest13037-1kworker/u9:121:47:590
100369961,3cyclictest16289-21rm23:17:370
100369960,4cyclictest32309-21diskmemload22:55:310
100509952,2cyclictest658-21snmpd22:15:073
100509952,2cyclictest658-21snmpd22:05:073
100509952,2cyclictest5697-21cat20:10:123
100509952,2cyclictest504-21dbus-daemon19:50:063
100509952,2cyclictest32737-21ssh21:10:103
100509952,2cyclictest31265-21ntpq21:05:163
100509952,2cyclictest17733-21cut19:25:143
100509952,2cyclictest11566-21chrt20:20:483
100509952,2cyclictest11180-21cstates22:35:153
100509952,2cyclictest10391-21cpuspeed_turbos19:10:133
100509950,4cyclictest31205-21basename19:55:113
100509950,3cyclictest275-21systemd-journal19:40:113
100509950,1cyclictest1011-21/usr/sbin/munin20:00:143
100459952,2cyclictest7867-21tr20:15:122
100459952,2cyclictest31356-21cpuspeed_turbos19:55:122
100459952,2cyclictest31002-21cat21:05:152
100459952,2cyclictest2904-21ssh22:50:062
100459952,2cyclictest28219-21ssh00:25:082
100459952,2cyclictest28219-21ssh00:25:082
100459952,2cyclictest28044-21cat19:45:182
100459952,2cyclictest21893-21tune2fs20:45:132
100459952,2cyclictest19681-21sh23:20:072
100459952,2cyclictest16910-21seq20:35:032
100459952,2cyclictest12957-21ntpq19:15:022
100459952,2cyclictest0-21swapper/223:40:172
100459951,3cyclictest5723-21cat20:10:122
100459951,3cyclictest5133-21awk00:30:162
100459951,3cyclictest513-21grep21:10:122
100459951,3cyclictest19667-21date19:30:012
100459951,3cyclictest12239-21expr00:15:112
100459951,3cyclictest0-21swapper/222:45:052
100459950,4cyclictest17000-21/usr/sbin/munin21:20:122
100459950,3cyclictest275-21systemd-journal20:20:162
100419952,2cyclictest658-21snmpd23:55:011
100419952,2cyclictest658-21snmpd21:10:051
100419952,2cyclictest658-21snmpd20:10:191
100419952,2cyclictest29666-21cat19:50:171
100419952,2cyclictest28462-21expr23:45:111
100419952,2cyclictest24303-21cat20:50:131
100419952,2cyclictest21696-21expr20:45:121
100419952,2cyclictest20414-21cut22:40:201
100419952,2cyclictest20375-21expr19:30:141
100419951,3cyclictest22108-21cat19:35:121
100419951,3cyclictest17676-21cat19:25:131
100419951,3cyclictest11465-21/usr/sbin/munin19:10:201
100419950,4cyclictest28660-21head21:00:131
100419950,4cyclictest13537-21cut19:15:131
100419950,3cyclictest275-21systemd-journal20:37:181
100419950,3cyclictest2747-21sshd20:02:111
100369955,0cyclictest0-21swapper/020:50:130
100369953,2cyclictest50950irq/137-enp4s0-00:25:120
100369953,2cyclictest50950irq/137-enp4s0-00:25:120
100369953,1cyclictest32642-21ssh21:10:050
100369953,1cyclictest32309-21diskmemload22:35:040
100369952,2cyclictest900-21gpg-connect-age21:30:000
100369952,2cyclictest658-21snmpd20:00:100
100369952,2cyclictest658-21snmpd19:25:110
100369952,2cyclictest658-21snmpd00:30:050
100369952,2cyclictest2286-21ssh22:10:060
100369952,2cyclictest19987-21cat19:30:120
100369952,2cyclictest19490-21expr20:40:120
100369952,2cyclictest18378-21ssh22:00:100
100369951,3cyclictest25844-21/usr/sbin/munin20:55:120
100369950,2cyclictest16948-21cpu21:20:120
100369950,1cyclictest3265-21apt-get20:05:130
100369950,1cyclictest10721-21irqstats21:55:160
100369950,0cyclictest0-21swapper/022:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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