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2026-01-11 - 03:13
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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 376 highest latencies:
System rackaslot8.osadl.org (updated Sun Jan 11, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318532296265,20sleep10-21swapper/119:07:251
319742294239,17sleep20-21swapper/219:08:552
320532288223,21sleep30-21swapper/319:09:573
318732259235,15sleep00-21swapper/019:07:360
303122660,0sleep20-21swapper/223:30:302
274072620,0sleep00-21swapper/000:28:140
274072620,0sleep00-21swapper/000:28:140
97892610,0sleep20-21swapper/200:17:222
217422590,0sleep20-21swapper/223:05:442
141382580,0sleep00-21swapper/000:20:130
184952570,0sleep20-21swapper/200:22:432
57802550,0sleep20-21swapper/223:15:362
39772530,0sleep30-21swapper/322:35:253
90972190,0sleep10-21swapper/123:57:151
252792190,1sleep10-21swapper/121:30:201
161052180,0sleep10-21swapper/100:01:161
145442180,0sleep00-21swapper/021:24:510
223752170,0sleep10-21swapper/121:29:161
307662160,0sleep30-21swapper/322:32:253
29042150,0sleep00-21swapper/023:14:460
139942140,0sleep013995-21latency00:00:150
3216299110,2cyclictest27350-21munin-run23:10:001
3216299103,2cyclictest22380-21ssh00:25:131
3216299103,2cyclictest22380-21ssh00:25:131
3216299101,3cyclictest275-21systemd-journal19:32:031
3216299101,2cyclictest275-21systemd-journal21:42:221
3216299100,3cyclictest275-21systemd-journal23:05:001
3216299100,3cyclictest275-21systemd-journal22:35:231
321669998,1cyclictest28-21ksoftirqd/219:40:002
321669998,1cyclictest28-21ksoftirqd/200:00:012
321629993,2cyclictest658-21snmpd19:45:071
321629993,2cyclictest25502-21sh21:11:011
321629992,2cyclictest21486-21ssh00:05:121
321629992,2cyclictest1843-21rm21:16:261
321629992,2cyclictest16491-21sh00:21:091
321629992,2cyclictest14595-21date20:50:151
321629992,1cyclictest0-21swapper/122:16:581
321629992,1cyclictest0-21swapper/100:11:381
321629990,3cyclictest4661-21rm21:37:381
321629990,3cyclictest4243-21latency_hist20:30:001
321629990,3cyclictest275-21systemd-journal19:25:001
321629990,3cyclictest10665-21sshd00:18:031
321629990,2cyclictest4690-21perl23:35:131
321629990,2cyclictest275-21systemd-journal22:49:571
321589990,8cyclictest22734-21ssh22:46:510
7337280,1sleep37338-21cstates21:20:123
5024280,0sleep00-21swapper/022:16:360
321669986,1cyclictest28-21ksoftirqd/222:00:022
321629983,3cyclictest2029-21grep20:25:001
321629983,1cyclictest28990-21rm22:31:021
321629983,1cyclictest24671-21sh22:29:041
321629982,2cyclictest7252-21expr21:20:121
321629982,2cyclictest6815-21ssh21:58:571
321629982,2cyclictest658-21snmpd20:56:191
321629982,2cyclictest504-21dbus-daemon19:11:151
321629982,2cyclictest25876-21ssh23:28:261
321629982,2cyclictest0-21swapper/122:55:071
321629982,1cyclictest15075-21ssh22:22:591
321629981,2cyclictest0-21swapper/100:32:461
321629981,1cyclictest0-21swapper/122:02:131
321629981,1cyclictest0-21swapper/119:40:191
321629980,3cyclictest3492-21rm23:15:021
321629980,3cyclictest31247-21/usr/sbin/munin20:15:191
321629980,3cyclictest30051-21sh22:12:331
321629980,3cyclictest2861-21ssh23:14:441
321629980,3cyclictest275-21systemd-journal23:48:211
321629980,3cyclictest21059-21ssh21:47:371
321629980,3cyclictest1946-21rm23:53:001
321629980,3cyclictest17943-21ssh23:43:171
321629980,3cyclictest17817-21head22:05:141
321629980,3cyclictest13496-21rm22:41:071
321629980,2cyclictest275-21systemd-journal22:50:241
321589987,1cyclictest12-21ksoftirqd/020:25:010
321589986,1cyclictest12-21ksoftirqd/020:40:010
12304280,0sleep20-21swapper/223:20:122
321709974,2cyclictest504-21dbus-daemon21:20:003
321709974,2cyclictest504-21dbus-daemon19:20:003
321709974,2cyclictest28784-21diskstats23:30:133
321709973,3cyclictest658-21snmpd21:50:313
321709973,3cyclictest658-21snmpd19:30:123
321709973,3cyclictest5777-21cat00:15:123
321709973,3cyclictest275-21systemd-journal22:30:013
321709973,3cyclictest275-21systemd-journal20:29:383
321709973,3cyclictest14395-21cat19:40:123
321709973,3cyclictest11011-21sed22:20:153
321709973,1cyclictest0-21swapper/322:58:373
321709971,1cyclictest141rcu_preempt23:35:103
321669973,2cyclictest275-21systemd-journal00:30:002
321669973,2cyclictest275-21systemd-journal00:30:002
321669973,1cyclictest0-21swapper/200:04:172
321669970,7cyclictest0-21swapper/221:46:102
321669970,6cyclictest0-21swapper/223:40:182
321629974,2cyclictest560-21gdbus00:40:011
321629972,1cyclictest8667-21chrt20:36:031
321629971,2cyclictest9833-21grep20:40:151
321629971,2cyclictest674-21lldpd19:37:031
321629971,2cyclictest658-21snmpd21:09:531
321629971,2cyclictest658-21snmpd20:12:511
321629971,2cyclictest24868-21date20:00:211
321629970,3cyclictest8553-21ntp_states19:25:171
321629970,3cyclictest29454-21ssh23:30:181
321629970,3cyclictest14335-21ssh23:20:491
321629970,1cyclictest25472-21expr21:50:171
321589976,1cyclictest12-21ksoftirqd/022:25:020
321589973,3cyclictest7625-11brltty21:57:210
321589973,3cyclictest658-21snmpd23:01:090
321589973,3cyclictest658-21snmpd19:28:230
14593270,0sleep30-21swapper/323:21:033
321709964,2cyclictest34-21ksoftirqd/323:00:113
321709964,1cyclictest22401-21diskmemload23:15:133
321709963,2cyclictest7402-21ssh23:55:553
321709963,2cyclictest6546-21taskset21:39:053
321709963,2cyclictest6025-21ssh22:17:243
321709963,2cyclictest504-21dbus-daemon21:25:003
321709963,2cyclictest30390-21expr00:30:113
321709963,2cyclictest29631-21ssh23:10:233
321709963,2cyclictest275-21systemd-journal23:40:223
321709963,2cyclictest26340-21cat22:10:173
321709963,2cyclictest26237-21sshd00:07:463
321709963,2cyclictest23140-21cat21:10:123
321709963,2cyclictest22375-21seq23:06:143
321709963,2cyclictest20983-21latency23:25:153
321709963,2cyclictest19111-21sh22:45:123
321709963,2cyclictest18608-21fschecks_count21:00:153
321709963,2cyclictest1708-21taskset20:21:303
321709963,2cyclictest12085-21chrt21:41:583
321709963,2cyclictest11340-21ssh22:00:503
321709963,1cyclictest0-21swapper/322:41:073
321709962,3cyclictest9517-21expr20:40:123
321709962,3cyclictest8252-21cat19:25:153
321709962,3cyclictest658-21snmpd23:45:043
321709962,3cyclictest658-21snmpd21:07:333
321709962,3cyclictest658-21snmpd20:47:103
321709962,3cyclictest658-21snmpd20:35:403
321709962,3cyclictest658-21snmpd20:31:283
321709962,3cyclictest658-21snmpd20:06:343
321709962,3cyclictest658-21snmpd19:53:093
321709962,3cyclictest6315-21expr00:35:123
321709962,3cyclictest28117-21cat22:50:153
321709962,3cyclictest25369-21expr21:30:203
321709962,3cyclictest1730-21cat21:55:203
321709962,3cyclictest13374-21cat00:00:123
321709962,3cyclictest12713-21cat19:35:143
321709962,1cyclictest0-21swapper/300:25:083
321709962,1cyclictest0-21swapper/300:25:083
321709962,1cyclictest0-21swapper/300:10:173
321709961,4cyclictest320-21sort19:10:133
321709960,4cyclictest0-21swapper/300:22:533
321709960,3cyclictest18316-21ssh21:45:263
321669966,0cyclictest0-21swapper/222:33:112
321669966,0cyclictest0-21swapper/221:53:162
321669964,1cyclictest501-21in:imuxsock00:10:012
321669963,2cyclictest673-21cat21:35:142
321669963,2cyclictest658-21snmpd22:14:322
321669963,2cyclictest658-21snmpd19:19:482
321669963,2cyclictest658-21snmpd00:35:022
321669963,2cyclictest5059-21ssh23:35:142
321669963,2cyclictest3485-21df22:55:132
321669963,2cyclictest21240-21grep23:45:142
321669963,2cyclictest20346-21ssh22:06:242
321669963,2cyclictest15961-21apt-get20:55:112
321669963,2cyclictest15451-21ssh21:25:072
321669963,2cyclictest13073-21users20:45:242
321669963,1cyclictest0-21swapper/222:45:412
321669962,3cyclictest8496-21expr21:40:122
321669962,3cyclictest658-21snmpd22:23:352
321669962,3cyclictest658-21snmpd21:13:592
321669962,3cyclictest658-21snmpd21:03:512
321669962,3cyclictest658-21snmpd20:52:532
321669962,3cyclictest658-21snmpd20:30:342
321669962,3cyclictest658-21snmpd20:05:372
321669962,3cyclictest658-21snmpd19:58:372
321669962,3cyclictest658-21snmpd19:31:592
321669962,3cyclictest658-21snmpd00:10:222
321669962,3cyclictest504-21dbus-daemon20:20:002
321669962,3cyclictest275-21systemd-journal19:25:012
321669962,1cyclictest0-21swapper/222:35:532
321669962,1cyclictest0-21swapper/222:17:382
321669960,6cyclictest0-21swapper/221:32:472
321669960,0cyclictest0-21swapper/223:51:512
321629964,1cyclictest3713-21hddtemp_smartct19:15:121
321629962,3cyclictest504-21dbus-daemon19:55:011
321629962,3cyclictest13453-21seq20:49:511
321629960,3cyclictest26438-21uname20:05:151
321589964,1cyclictest14333-21hddtemp_smartct20:50:140
321589963,2cyclictest9824-21sh22:39:410
321589963,2cyclictest9807-21cat21:40:180
321589963,2cyclictest658-21snmpd22:12:080
321589963,2cyclictest658-21snmpd19:10:470
321589963,2cyclictest6201-21wc19:20:140
321589963,2cyclictest5834-21ssh00:35:040
321589963,2cyclictest504-21dbus-daemon23:20:000
321589963,2cyclictest3021-21sh22:55:090
321589963,2cyclictest275-21systemd-journal20:07:570
321589963,2cyclictest23619-21sh21:30:030
321589963,2cyclictest22544-21ssh23:45:280
321589963,2cyclictest19238-21fw_packets19:50:130
321589963,2cyclictest1360-21ssh21:16:030
321589963,2cyclictest12365-21ssh22:01:370
321589963,2cyclictest11976-21sh23:20:120
321589963,2cyclictest10159-21ssh23:38:390
321589962,3cyclictest9899-21hostname20:40:140
321589962,3cyclictest658-21snmpd23:41:400
321589962,3cyclictest658-21snmpd23:26:010
321589962,3cyclictest658-21snmpd23:08:090
321589962,3cyclictest658-21snmpd22:50:060
321589962,3cyclictest658-21snmpd22:29:180
321589962,3cyclictest658-21snmpd21:36:090
321589962,3cyclictest658-21snmpd20:57:250
321589962,3cyclictest658-21snmpd20:26:320
321589962,3cyclictest658-21snmpd20:15:070
321589962,3cyclictest658-21snmpd20:11:420
321589962,3cyclictest658-21snmpd19:49:460
321589962,3cyclictest658-21snmpd19:35:520
321589962,3cyclictest658-21snmpd00:17:560
321589962,3cyclictest504-21dbus-daemon19:15:000
321589962,3cyclictest275-21systemd-journal19:55:010
321589962,3cyclictest1-21systemd20:34:380
321589962,3cyclictest12187-21cat20:45:140
321589962,3cyclictest10492-21cat19:30:160
321589962,1cyclictest0-21swapper/023:52:130
321589962,1cyclictest0-21swapper/022:41:100
321589962,1cyclictest0-21swapper/021:51:300
321589962,1cyclictest0-21swapper/021:25:160
321589962,1cyclictest0-21swapper/000:10:200
321589961,4cyclictest30346-21tr00:30:120
321589960,5cyclictest5635-21hddtemp_smartct23:55:130
321589960,2cyclictest28335-21/usr/sbin/munin23:30:210
22208260,5sleep322231-21ssh22:07:523
321709952,2cyclictest6318-21ntpq19:20:163
321709952,2cyclictest30829-21basename20:15:163
321709952,2cyclictest29852-21cat23:50:143
321709952,2cyclictest29219-21taskset20:10:223
321709952,2cyclictest23497-21sort20:00:123
321709952,2cyclictest20936-21/usr/sbin/munin19:55:133
321709952,2cyclictest17034-21head19:45:143
321709952,2cyclictest15962-21dpkg20:55:113
321709952,2cyclictest13941-21cstates20:50:123
321669953,1cyclictest27149-21sh22:50:072
321669952,2cyclictest9738-21tune2fs20:40:132
321669952,2cyclictest8826-21ssh22:00:062
321669952,2cyclictest8324-21expr19:25:152
321669952,2cyclictest6752-21sh21:20:022
321669952,2cyclictest658-21snmpd20:27:192
321669952,2cyclictest658-21snmpd20:20:102
321669952,2cyclictest477-21tail19:10:152
321669952,2cyclictest30001-21ssh00:30:052
321669952,2cyclictest28641-21cat20:10:172
321669952,2cyclictest21280-21cat21:05:162
321669952,2cyclictest20442-21expr23:25:112
321669952,2cyclictest19019-21cat19:50:122
321669952,2cyclictest15973-21taskset19:41:492
321669952,2cyclictest11606-21expr23:00:122
321669952,2cyclictest10678-21ssh22:40:092
321669951,3cyclictest7447-21fschecks_count20:35:132
321669951,3cyclictest30942-21ssh21:15:052
321669951,3cyclictest28591-21irqstats23:10:152
321669951,3cyclictest23496-21find20:00:132
321669951,3cyclictest16901-21diskstats19:45:132
321669951,1cyclictest0-21swapper/222:25:042
321629952,2cyclictest4590-21cpuspeed_turbos20:30:121
321629952,2cyclictest22242-21ls19:55:211
321629951,3cyclictest658-21snmpd21:01:321
321589952,2cyclictest658-21snmpd21:00:080
321589952,2cyclictest658-21snmpd00:05:010
321589952,2cyclictest26574-21cstates22:30:130
321589952,2cyclictest22654-21ssh21:10:010
321589952,2cyclictest21012-21expr21:05:140
321589952,2cyclictest19417-21ssh22:05:410
321589952,2cyclictest16397-21ssh21:45:100
321589951,3cyclictest23456-21gdbus20:00:010
321589950,1cyclictest15251-21ntp_states19:40:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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