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2026-08-28 - 01:38
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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 Aug 27, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123742274213,50sleep00-21swapper/007:06:380
125372272240,21sleep20-21swapper/207:08:452
125562267235,21sleep10-21swapper/107:09:001
126212265235,20sleep30-21swapper/307:09:513
171702660,0sleep20-21swapper/211:15:022
92302620,0sleep00-21swapper/009:33:570
140242620,0sleep20-21swapper/212:10:162
89272600,0sleep00-21swapper/011:10:110
267632570,0sleep30-21swapper/312:36:513
14332570,1sleep122-21ksoftirqd/112:21:591
86242560,0sleep20-21swapper/211:48:012
87192550,0sleep30-21swapper/311:48:053
203252550,0sleep00-21swapper/008:35:110
183692550,0sleep20-21swapper/209:39:192
255722540,0sleep20-21swapper/211:00:162
144992480,0sleep20-21swapper/211:32:122
295982230,0sleep30-21swapper/309:26:073
307712190,0sleep20-21swapper/211:41:412
304802180,0sleep10-21swapper/112:39:421
286672180,0sleep00-21swapper/010:04:560
144842180,0sleep10-21swapper/107:10:201
141662180,0sleep20-21swapper/209:15:332
91122170,0sleep20-21swapper/212:26:252
120542150,0sleep20-21swapper/211:11:222
257732130,0sleep00-21swapper/010:40:520
248312130,0sleep20-21swapper/210:21:082
1274099108,1cyclictest12-21ksoftirqd/009:45:010
1274099100,1cyclictest6159-21munin-run08:05:010
127409993,1cyclictest141rcu_preempt07:25:130
8902280,0sleep10-21swapper/109:52:371
6823280,0sleep30-21swapper/311:08:463
27708280,0sleep20-21swapper/212:37:342
127529985,2cyclictest13587-21ssh11:12:303
127449985,2cyclictest29363-21dump-pmu-power07:45:011
127449984,3cyclictest30727-21snmpd10:55:251
127409987,1cyclictest12-21ksoftirqd/009:25:000
127409983,3cyclictest29921-21munin-run10:25:010
127409981,4cyclictest1698-21basename07:55:010
20553270,0sleep10-21swapper/111:35:231
18923270,0sleep30-21swapper/310:56:093
127529976,1cyclictest11191-21sed11:30:163
127529973,3cyclictest22529-21cron12:35:003
127529973,1cyclictest0-21swapper/312:06:423
127489975,2cyclictest28-21ksoftirqd/207:40:012
127489974,2cyclictest504-21dbus-daemon11:39:062
127489973,3cyclictest29401-21readlink12:20:002
127489973,3cyclictest0-21swapper/211:25:532
127489973,2cyclictest275-21systemd-journal10:00:212
127489972,3cyclictest275-21systemd-journal07:25:112
127489970,4cyclictest7257-21awk10:50:012
127489970,1cyclictest0-21swapper/209:48:282
127449974,2cyclictest504-21dbus-daemon07:20:011
127449974,2cyclictest31236-21sh09:00:011
127449974,2cyclictest275-21systemd-journal07:52:231
127449973,4cyclictest5864-21kworker/1:008:04:471
127449973,4cyclictest5864-21kworker/1:007:22:111
127449973,3cyclictest5974-21cat10:10:161
127449973,3cyclictest560-21gdbus10:40:061
127449973,3cyclictest504-21dbus-daemon07:30:001
127449973,3cyclictest275-21systemd-journal11:45:001
127449973,3cyclictest20901-21ntpq09:20:161
127449973,2cyclictest30727-21snmpd11:49:181
127449972,3cyclictest30727-21snmpd09:45:231
127449972,3cyclictest275-21systemd-journal12:15:001
127449970,6cyclictest4107-21smart_sda09:30:191
127409976,1cyclictest12-21ksoftirqd/012:40:000
127409976,1cyclictest12-21ksoftirqd/009:20:000
127409973,3cyclictest30727-21snmpd11:00:500
127409973,1cyclictest141rcu_preempt12:14:110
127409973,0cyclictest12-21ksoftirqd/010:30:120
127529966,0cyclictest0-21swapper/309:10:003
127529964,1cyclictest6958-21hddtemp_smartct10:30:143
127529963,2cyclictest9174-21ssh12:26:283
127529963,2cyclictest504-21dbus-daemon12:15:023
127529963,2cyclictest504-21dbus-daemon10:11:083
127529963,2cyclictest504-21dbus-daemon08:31:153
127529963,2cyclictest30727-21snmpd11:28:263
127529963,2cyclictest30727-21snmpd11:20:233
127529963,2cyclictest30633-21smart_sda10:05:203
127529963,2cyclictest29837-21grep08:55:143
127529963,2cyclictest275-21systemd-journal11:36:113
127529963,2cyclictest27308-21ssh10:23:023
127529963,2cyclictest25615-21sshd10:40:443
127529963,2cyclictest21948-21ssh09:21:383
127529963,2cyclictest14778-11brltty11:41:363
127529962,3cyclictest9253-21ls10:50:213
127529962,3cyclictest4866-21cat08:00:153
127529962,3cyclictest30727-21snmpd11:19:173
127529962,3cyclictest30727-21snmpd10:00:183
127529962,3cyclictest30727-21snmpd09:39:043
127529962,3cyclictest30727-21snmpd08:50:213
127529962,3cyclictest30727-21snmpd08:25:533
127529962,3cyclictest30727-21snmpd08:20:593
127529962,3cyclictest30727-21snmpd08:15:053
127529962,3cyclictest30727-21snmpd07:51:593
127529962,3cyclictest30235-21cat07:45:133
127529962,3cyclictest30232-21expr12:20:133
127529962,3cyclictest28949-21expr12:00:133
127529962,3cyclictest275-21systemd-journal08:10:193
127529962,3cyclictest24785-21packagekitd08:45:013
127529962,2cyclictest12453-21cat11:50:143
127529962,1cyclictest0-21swapper/311:01:413
127529962,1cyclictest0-21swapper/309:56:413
127529962,1cyclictest0-21swapper/309:54:573
127529961,2cyclictest28871-21ssh09:45:163
127529961,1cyclictest0-21swapper/310:35:023
127529960,6cyclictest0-21swapper/312:12:073
127529960,6cyclictest0-21swapper/310:45:023
127529960,6cyclictest0-21swapper/310:25:473
127529960,6cyclictest0-21swapper/309:40:473
127529960,6cyclictest0-21swapper/309:32:293
127529960,6cyclictest0-21swapper/307:19:133
127529960,5cyclictest13207-21ntp_states09:15:173
127529960,2cyclictest20219-21cpuspeed_turbos08:35:113
127489963,2cyclictest9545-21sh12:07:482
127489963,2cyclictest7567-21ssh10:50:052
127489963,2cyclictest5078-21ssh11:07:272
127489963,2cyclictest30079-21missed_timers08:55:162
127489963,2cyclictest27805-21ssh10:42:252
127489963,2cyclictest26997-21awk11:20:182
127489963,2cyclictest24463-21sshd07:31:122
127489963,2cyclictest23165-21rm09:41:342
127489963,2cyclictest14296-21vmstat09:55:222
127489962,3cyclictest30727-21snmpd12:24:282
127489962,3cyclictest30727-21snmpd12:00:392
127489962,3cyclictest30727-21snmpd10:30:512
127489962,3cyclictest30727-21snmpd10:28:132
127489962,3cyclictest30727-21snmpd10:13:392
127489962,3cyclictest30727-21snmpd08:18:502
127489962,3cyclictest30145-21cat10:05:172
127489962,3cyclictest275-21systemd-journal09:52:122
127489962,3cyclictest275-21systemd-journal09:30:252
127489962,3cyclictest275-21systemd-journal09:12:112
127489962,3cyclictest2350-21sed09:05:182
127489962,3cyclictest20974-21seq09:20:512
127489962,3cyclictest20947-11brltty09:26:512
127489962,3cyclictest18244-21find07:20:012
127489962,1cyclictest0-21swapper/211:56:582
127489961,4cyclictest0-21swapper/210:35:022
127489960,5cyclictest20050-21/usr/sbin/munin08:35:122
127489960,4cyclictest32269-21sshd09:00:152
127449964,2cyclictest13621-21apt-get10:15:111
127449964,1cyclictest26633-21sh11:00:371
127449963,3cyclictest5864-21kworker/1:012:27:071
127449963,3cyclictest5864-21kworker/1:012:15:511
127449963,3cyclictest5864-21kworker/1:012:06:071
127449963,3cyclictest5864-21kworker/1:011:31:271
127449963,3cyclictest5864-21kworker/1:011:21:461
127449963,3cyclictest5864-21kworker/1:010:36:231
127449963,3cyclictest5864-21kworker/1:010:30:471
127449963,3cyclictest5864-21kworker/1:009:26:191
127449963,3cyclictest5864-21kworker/1:009:05:471
127449963,3cyclictest5864-21kworker/1:008:50:111
127449963,3cyclictest5864-21kworker/1:008:42:591
127449963,3cyclictest5864-21kworker/1:008:36:071
127449963,3cyclictest5864-21kworker/1:008:30:391
127449963,3cyclictest5864-21kworker/1:008:20:511
127449963,3cyclictest5864-21kworker/1:008:15:181
127449963,3cyclictest5864-21kworker/1:008:12:551
127449963,3cyclictest5864-21kworker/1:007:49:191
127449963,2cyclictest7707-21sh10:50:121
127449963,2cyclictest30727-21snmpd09:00:541
127449963,2cyclictest275-21systemd-journal11:50:211
127449963,2cyclictest275-21systemd-journal11:25:531
127449963,2cyclictest19314-21ssh11:15:271
127449963,1cyclictest18750irq/134-ahci[0012:34:551
127449963,0cyclictest5864-21kworker/1:009:11:071
127449962,3cyclictest30727-21snmpd11:55:121
127449962,3cyclictest30727-21snmpd11:12:471
127449962,3cyclictest30727-21snmpd10:45:191
127449962,3cyclictest30727-21snmpd10:30:011
127449962,3cyclictest30727-21snmpd09:56:271
127449962,3cyclictest30727-21snmpd07:56:531
127449962,3cyclictest30727-21snmpd07:35:431
127449962,3cyclictest30727-21snmpd07:34:041
127449962,3cyclictest30319-21ntpq10:05:181
127449962,3cyclictest23131-21ntpq10:20:181
127449962,3cyclictest21956-21ntp_kernel_pll_10:00:171
127449962,3cyclictest20533-21cat09:40:151
127449961,3cyclictest275-21systemd-journal09:36:011
127449961,3cyclictest275-21systemd-journal08:05:111
127449960,3cyclictest24810-21/usr/sbin/munin08:45:141
127449960,0cyclictest0-21swapper/111:05:231
127409965,1cyclictest12-21ksoftirqd/012:35:000
127409965,1cyclictest12-21ksoftirqd/011:20:120
127409965,1cyclictest12-21ksoftirqd/007:45:030
127409965,1cyclictest12-21ksoftirqd/007:25:010
127409965,1cyclictest121ksoftirqd/012:15:110
127409964,1cyclictest12-21ksoftirqd/009:50:190
127409964,1cyclictest0-21swapper/008:30:190
127409963,2cyclictest30727-21snmpd12:21:580
127409963,2cyclictest30727-21snmpd07:55:380
127409963,2cyclictest304-21systemd-udevd08:50:550
127409963,2cyclictest275-21systemd-journal11:17:000
127409963,2cyclictest2281-21sh11:25:130
127409963,2cyclictest21419-21sendmail_mailqu11:55:190
127409963,2cyclictest1672-21sh10:45:470
127409963,2cyclictest12698-21taskset08:18:330
127409963,2cyclictest12468-21ntpq09:35:160
127409962,3cyclictest30727-21snmpd11:48:120
127409962,3cyclictest30727-21snmpd11:41:360
127409962,3cyclictest30727-21snmpd11:31:350
127409962,3cyclictest30727-21snmpd10:25:340
127409962,3cyclictest30727-21snmpd09:00:060
127409962,3cyclictest30727-21snmpd08:57:320
127409962,3cyclictest30727-21snmpd08:13:230
127409962,3cyclictest30727-21snmpd07:39:220
127409962,3cyclictest29925-21expr10:05:160
127409962,3cyclictest29308-21cat12:00:150
127409962,3cyclictest275-21systemd-journal07:30:120
127409962,3cyclictest15733-21cat10:35:160
127409962,3cyclictest12596-21cat09:55:120
127409962,3cyclictest1-21systemd12:28:470
127409962,1cyclictest0-21swapper/011:50:340
127409962,1cyclictest0-21swapper/010:11:090
127409962,1cyclictest0-21swapper/009:48:150
127409961,1cyclictest141rcu_preempt09:10:130
127409960,5cyclictest275-21systemd-journal08:50:010
127409960,2cyclictest189202sh10:56:090
127409960,1cyclictest141rcu_preempt10:15:120
127409960,1cyclictest0-21swapper/012:06:020
127529955,0cyclictest0-21swapper/310:15:273
127529953,1cyclictest21395-21ls07:25:163
127529952,2cyclictest3620-21ssh09:10:053
127529952,2cyclictest30727-21snmpd07:20:193
127529952,2cyclictest28157-21wc07:40:153
127529952,2cyclictest2285-21expr07:55:143
127529952,2cyclictest22463-21ssh11:55:453
127529952,2cyclictest13309-21cat07:10:133
127529951,3cyclictest30727-21snmpd08:05:083
127529951,3cyclictest22909-21/usr/sbin/munin07:30:123
127529951,3cyclictest0-21swapper/308:40:113
127529950,3cyclictest275-21systemd-journal09:00:113
127529950,3cyclictest275-21systemd-journal07:35:123
127489955,0cyclictest0-21swapper/207:10:032
127489953,1cyclictest491-21systemd-logind07:45:022
127489952,2cyclictest9314-21cat08:10:132
127489952,2cyclictest275-21systemd-journal08:05:112
127489952,2cyclictest24691-21dpkg08:45:012
127489952,2cyclictest22915-21hddtemp_smartct08:40:142
127489952,2cyclictest2168-21expr07:55:132
127489952,2cyclictest18529-21cat08:30:142
127489952,2cyclictest16813-21which08:25:192
127489952,2cyclictest16348-21gltestperf07:15:152
127489952,2cyclictest16000-21ssh10:55:072
127489952,2cyclictest14537-21ssh12:30:092
127489952,2cyclictest13500-21cpuspeed08:20:122
127489951,3cyclictest30727-21snmpd07:50:022
127489951,3cyclictest27903-21/usr/sbin/munin07:40:132
127489951,3cyclictest11478-21rm11:50:012
127489951,2cyclictest275-21systemd-journal08:50:112
127489950,5cyclictest0-21swapper/210:15:032
127489950,3cyclictest275-21systemd-journal08:00:122
127449952,3cyclictest5864-21kworker/1:008:25:031
127449952,2cyclictest28644-21cpuspeed12:00:121
127449952,2cyclictest12591-21grep09:15:121
127409954,1cyclictest12-21ksoftirqd/009:05:120
127409953,1cyclictest18870-21cpuspeed_turbos11:35:120
127409953,1cyclictest16304-21fschecks_time07:15:140
127409952,2cyclictest8348-21head10:50:150
127409952,2cyclictest30727-21snmpd08:25:020
127409952,2cyclictest27441-21awk07:40:110
127409952,2cyclictest13656-21expr08:20:120
127409951,3cyclictest30727-21snmpd08:05:440
127409951,3cyclictest12972-21apt07:10:120
127409951,1cyclictest0-21swapper/009:25:070
127409950,4cyclictest1940-21sed11:05:190
127409950,3cyclictest275-21systemd-journal08:40:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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