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2026-03-14 - 11:22
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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 all highest latencies:
System rackaslot8.osadl.org (updated Sat Mar 14, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295502312281,21sleep10-21swapper/119:08:061
295612298272,17sleep20-21swapper/219:08:152
295862269243,17sleep00-21swapper/019:08:330
295472263230,22sleep30-21swapper/319:08:033
159882640,0sleep00-21swapper/021:46:160
34162630,0sleep00-21swapper/019:20:140
308782620,0sleep30-21swapper/300:13:183
30682590,0sleep20-21swapper/222:57:052
136632590,0sleep30-21swapper/323:03:553
111992590,0sleep20-21swapper/200:20:222
37952570,0sleep00-21swapper/022:57:400
218692570,0sleep30-21swapper/323:08:563
20152560,0sleep10-21swapper/123:35:241
129692560,0sleep10-21swapper/100:21:451
56722540,0sleep00-21swapper/023:18:540
137132180,0sleep20-21swapper/200:02:442
227272110,0sleep10-21swapper/123:48:461
28848290,2sleep0131rcuc/022:14:360
21121290,1sleep20-21swapper/222:09:562
11871290,1sleep20-21swapper/222:42:522
9783280,0sleep10-21swapper/100:00:161
6921280,0sleep00-21swapper/000:37:390
348280,0sleep00-21swapper/000:14:470
32219280,1sleep332218-21irqstats22:55:143
298099982,5cyclictest0-21swapper/321:45:013
298029986,2cyclictest25387-21kworker/1:222:53:551
896270,0sleep20-21swapper/223:55:112
298099974,2cyclictest5745-21dpkg22:20:013
298099974,2cyclictest504-21dbus-daemon23:25:533
298099974,2cyclictest32737-21memory20:25:153
298099974,2cyclictest275-21systemd-journal00:33:193
298099973,3cyclictest504-21dbus-daemon21:00:013
298099973,3cyclictest275-21systemd-journal21:31:203
298099973,3cyclictest275-21systemd-journal19:40:293
298099970,7cyclictest0-21swapper/321:45:233
298059973,3cyclictest560-21gdbus00:30:002
298059973,3cyclictest275-21systemd-journal23:53:182
298059973,3cyclictest275-21systemd-journal20:21:222
298059972,2cyclictest21698-21sed21:30:142
298059970,7cyclictest18088-21ssh22:46:212
298059970,3cyclictest275-21systemd-journal21:58:442
298029973,3cyclictest658-21snmpd21:17:201
298029973,1cyclictest0-21swapper/121:46:341
298029970,4cyclictest13864-21munin-run19:45:011
298029970,3cyclictest5192-21/usr/sbin/munin19:25:211
297989973,3cyclictest8935-21ntpq23:20:150
297989973,3cyclictest658-21snmpd00:00:100
297989973,3cyclictest560-21gdbus20:30:010
297989973,3cyclictest275-21systemd-journal00:24:190
297989973,3cyclictest24018-21cat22:50:150
297989973,1cyclictest0-21swapper/022:25:490
297989973,1cyclictest0-21swapper/022:21:240
297989973,1cyclictest0-21swapper/021:34:270
297989973,1cyclictest0-21swapper/021:23:320
297989971,2cyclictest12-21ksoftirqd/023:35:190
297989970,5cyclictest8389-21grep00:00:000
17246270,0sleep20-21swapper/222:26:152
1445270,0sleep00-21swapper/021:37:420
600260,0sleep10-21swapper/122:35:301
298099966,0cyclictest0-21swapper/321:10:213
298099963,2cyclictest880-21expr23:55:113
298099963,2cyclictest8423-21/usr/sbin/munin20:45:173
298099963,2cyclictest674-21lldpd20:07:003
298099963,2cyclictest674-21lldpd19:17:443
298099963,2cyclictest674-21lldpd19:17:443
298099963,2cyclictest6724-21ssh22:40:073
298099963,2cyclictest658-21snmpd21:52:423
298099963,2cyclictest658-21snmpd20:00:423
298099963,2cyclictest5458-21expr19:25:133
298099963,2cyclictest324-21awk23:15:143
298099963,2cyclictest30632-21ntp_kernel_err20:20:153
298099963,2cyclictest30276-21ssh21:15:183
298099963,2cyclictest27535-21cat20:15:113
298099963,2cyclictest275-21systemd-journal21:24:023
298099963,2cyclictest25275-21fschecks_count23:50:133
298099963,2cyclictest24467-21sh00:09:423
298099963,2cyclictest2399-21ssh21:38:283
298099963,2cyclictest23115-21cat22:10:183
298099963,2cyclictest18385-21grep21:05:133
298099963,2cyclictest15428-21cat22:25:173
298099963,2cyclictest1-21systemd00:20:353
298099963,1cyclictest0-21swapper/323:40:593
298099963,1cyclictest0-21swapper/323:22:133
298099962,3cyclictest9661-21apt-get19:35:113
298099962,3cyclictest7928-21ls23:40:013
298099962,3cyclictest658-21snmpd22:45:383
298099962,3cyclictest658-21snmpd22:38:413
298099962,3cyclictest658-21snmpd22:31:263
298099962,3cyclictest658-21snmpd21:56:133
298099962,3cyclictest658-21snmpd20:43:363
298099962,3cyclictest658-21snmpd19:47:023
298099962,3cyclictest658-21snmpd19:32:043
298099962,3cyclictest658-21snmpd19:21:163
298099962,3cyclictest275-21systemd-journal00:38:523
298099962,3cyclictest1846-21cat20:30:113
298099962,3cyclictest1-21systemd22:00:183
298099962,2cyclictest275-21systemd-journal23:46:403
298099962,1cyclictest0-21swapper/300:17:523
298099961,3cyclictest275-21systemd-journal22:51:553
298099960,5cyclictest25120-21irqstats23:30:143
298099960,4cyclictest1026-21sshd22:16:463
298099960,2cyclictest275-21systemd-journal23:10:023
298099960,2cyclictest14226-21timerwakeupswit21:25:183
298059966,0cyclictest0-21swapper/223:08:592
298059963,2cyclictest658-21snmpd22:01:392
298059963,2cyclictest5468-21grep20:35:192
298059963,2cyclictest31652-21rm00:13:542
298059963,2cyclictest275-21systemd-journal22:24:362
298059963,2cyclictest26027-21ssh00:30:072
298059963,2cyclictest13497-21diskstats21:45:142
298059963,2cyclictest11479-21systemd-udevd21:44:092
298059963,1cyclictest0-21swapper/200:36:282
298059962,3cyclictest658-21snmpd23:38:262
298059962,3cyclictest658-21snmpd23:24:032
298059962,3cyclictest658-21snmpd21:38:172
298059962,3cyclictest658-21snmpd21:25:472
298059962,3cyclictest658-21snmpd20:55:102
298059962,3cyclictest658-21snmpd20:51:582
298059962,3cyclictest658-21snmpd20:48:342
298059962,3cyclictest658-21snmpd20:26:412
298059962,3cyclictest658-21snmpd20:05:292
298059962,3cyclictest658-21snmpd20:04:022
298059962,3cyclictest658-21snmpd19:59:202
298059962,3cyclictest658-21snmpd19:17:252
298059962,3cyclictest658-21snmpd19:17:252
298059962,3cyclictest410-21awk23:15:162
298059962,3cyclictest31857-21cut22:35:162
298059962,3cyclictest29006-21df_inode21:15:112
298059962,3cyclictest28117-21cat20:15:142
298059962,3cyclictest22873-21grep21:50:202
298059962,3cyclictest17234-21grep00:05:122
298059962,3cyclictest0-21swapper/221:11:262
298059962,1cyclictest0-21swapper/223:45:292
298059962,1cyclictest0-21swapper/222:10:142
298059961,3cyclictest275-21systemd-journal22:31:482
298059961,1cyclictest141rcu_preempt19:15:022
298059960,6cyclictest0-21swapper/223:31:432
298059960,6cyclictest0-21swapper/222:15:272
298059960,0cyclictest0-21swapper/219:50:232
298029966,0cyclictest0-21swapper/123:31:431
298029966,0cyclictest0-21swapper/123:29:111
298029966,0cyclictest0-21swapper/121:22:391
298029966,0cyclictest0-21swapper/100:06:151
298029965,1cyclictest25387-21kworker/1:223:10:041
298029963,2cyclictest7185-21ntp_states20:40:181
298029963,2cyclictest663-21runrttasks21:06:031
298029963,2cyclictest658-21snmpd23:41:591
298029963,2cyclictest658-21snmpd23:17:151
298029963,2cyclictest658-21snmpd22:45:011
298029963,2cyclictest658-21snmpd22:22:251
298029963,2cyclictest5092-21cut20:35:171
298029963,2cyclictest4377-21ssh22:19:241
298029963,2cyclictest3300-21ntpq00:35:151
298029963,2cyclictest275-21systemd-journal21:10:001
298029963,2cyclictest24927-21ssh22:30:511
298029963,2cyclictest11173-21sshd22:42:201
298029963,1cyclictest0-21swapper/100:10:591
298029962,3cyclictest658-21snmpd23:20:261
298029962,3cyclictest658-21snmpd22:58:141
298029962,3cyclictest658-21snmpd22:06:301
298029962,3cyclictest658-21snmpd22:00:271
298029962,3cyclictest658-21snmpd21:58:421
298029962,3cyclictest658-21snmpd21:41:401
298029962,3cyclictest658-21snmpd21:34:441
298029962,3cyclictest658-21snmpd21:25:051
298029962,3cyclictest658-21snmpd20:17:091
298029962,3cyclictest658-21snmpd19:13:281
298029962,3cyclictest658-21snmpd00:26:131
298029962,3cyclictest275-21systemd-journal21:35:171
298029962,3cyclictest1451-21cat00:15:091
298029962,3cyclictest14315-21cat19:45:111
298029962,3cyclictest13874-21cat20:55:141
298029962,3cyclictest1120-21cat19:15:141
298029962,3cyclictest1120-21cat19:15:141
298029960,6cyclictest0-21swapper/123:01:331
297989964,2cyclictest12-21ksoftirqd/020:45:000
297989963,2cyclictest9704-21ssh22:41:120
297989963,2cyclictest658-21snmpd19:36:580
297989963,2cyclictest5459-21cut22:20:010
297989963,2cyclictest504-21dbus-daemon19:45:040
297989963,2cyclictest31379-21expr22:35:120
297989963,2cyclictest22712-21chrt20:04:370
297989963,2cyclictest20843-21sh23:08:070
297989963,1cyclictest0-21swapper/023:12:280
297989962,3cyclictest8417-21tr23:00:160
297989962,3cyclictest658-21snmpd23:40:060
297989962,3cyclictest658-21snmpd21:58:160
297989962,3cyclictest658-21snmpd21:40:580
297989962,3cyclictest658-21snmpd20:50:240
297989962,3cyclictest658-21snmpd20:31:550
297989962,3cyclictest658-21snmpd20:21:360
297989962,3cyclictest658-21snmpd20:13:330
297989962,3cyclictest658-21snmpd19:25:530
297989962,3cyclictest658-21snmpd19:10:280
297989962,3cyclictest658-21snmpd00:15:270
297989962,3cyclictest27806-21cat20:15:130
297989962,3cyclictest275-21systemd-journal20:35:060
297989962,3cyclictest18316-21cat21:05:120
297989962,3cyclictest16947-21hwlatdetect19:50:160
297989962,3cyclictest13098-21smart_sda19:40:180
297989962,1cyclictest0-21swapper/023:53:370
297989962,1cyclictest0-21swapper/022:47:000
297989962,1cyclictest0-21swapper/022:33:400
297989962,1cyclictest0-21swapper/022:04:420
297989962,1cyclictest0-21swapper/021:14:010
297989961,3cyclictest275-21systemd-journal23:46:350
297989961,2cyclictest20383-21ssh23:27:150
297989961,1cyclictest0-21swapper/021:50:120
297989960,5cyclictest24367-21sh23:30:100
14085260,0sleep30-21swapper/322:05:133
13644260,0sleep30-21swapper/300:02:413
298099953,1cyclictest17402-21cmp00:25:013
298099952,2cyclictest658-21snmpd19:50:363
298099952,2cyclictest30205-21expr19:10:133
298099952,2cyclictest25492-21expr20:10:123
298099952,2cyclictest18751-21cat19:55:153
298099951,3cyclictest504-21dbus-daemon20:50:083
298099951,3cyclictest16235-21memory21:00:153
298099951,1cyclictest3975-21apt-get20:35:103
298059952,2cyclictest8612-21expr23:40:122
298059952,2cyclictest8221-21expr19:30:142
298059952,2cyclictest663-21runrttasks20:30:012
298059952,2cyclictest658-21snmpd20:41:132
298059952,2cyclictest658-21snmpd19:28:312
298059952,2cyclictest15701-21expr21:00:112
298059952,1cyclictest0-21swapper/223:10:062
298059951,3cyclictest7286-21diskmemload23:00:102
298059951,3cyclictest3077-21diskstats19:20:112
298059951,3cyclictest17635-21/usr/sbin/munin21:05:132
298059951,3cyclictest12861-21/usr/sbin/munin19:40:172
298059951,3cyclictest1219-21/usr/sbin/munin00:15:102
298059951,2cyclictest4223-21rm21:20:012
298059950,4cyclictest25212-21/usr/sbin/munin20:10:122
298059950,4cyclictest14091-21/usr/sbin/munin19:45:142
298059950,3cyclictest275-21systemd-journal23:25:032
298059950,2cyclictest24043-21irqstats22:50:152
298029953,1cyclictest15623-21cat23:05:131
298029952,2cyclictest658-21snmpd20:45:121
298029952,2cyclictest658-21snmpd20:25:151
298029952,2cyclictest658-21snmpd20:10:381
298029952,2cyclictest658-21snmpd20:07:111
298029952,2cyclictest351-21ssh23:55:031
298029952,2cyclictest26237-21grep00:30:101
298029952,2cyclictest21072-21ssh21:50:041
298029952,2cyclictest1864-21grep20:30:121
298029952,2cyclictest15100-21cat22:25:161
298029952,2cyclictest11331-21ls20:50:121
298029951,3cyclictest658-21snmpd23:50:031
298029951,3cyclictest658-21snmpd21:00:001
298029951,3cyclictest658-21snmpd19:20:071
298029951,3cyclictest21464-21cat20:00:131
298029950,5cyclictest0-21swapper/119:50:231
298029950,4cyclictest21825-21tr22:10:121
298029950,4cyclictest19513-21ntp_states19:55:181
298029950,3cyclictest491-21systemd-logind20:22:121
298029950,3cyclictest275-21systemd-journal19:36:201
298029950,1cyclictest7415-21/usr/sbin/munin19:30:131
297989953,1cyclictest28599-21apt-get21:15:110
297989953,1cyclictest19695-21mailstats19:55:200
297989952,2cyclictest9061-21taskset19:31:090
297989952,2cyclictest8998-21sed20:45:120
297989952,2cyclictest674-21lldpd20:09:450
297989952,2cyclictest18262-21expr00:25:120
297989952,2cyclictest17409-21latency_hist21:05:000
297989952,2cyclictest16978-21sh00:05:060
297989952,2cyclictest13276-21sed21:25:130
297989952,2cyclictest1179-21latency19:15:160
297989952,2cyclictest1179-21latency19:15:150
297989952,1cyclictest0-21swapper/022:05:020
297989951,3cyclictest658-21snmpd20:59:360
297989950,3cyclictest275-21systemd-journal00:31:000
298059940,3cyclictest9898-21expr19:35:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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