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2026-04-17 - 05:09
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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 Fri Apr 17, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276762296245,42sleep10-21swapper/119:07:331
276142269242,17sleep20-21swapper/219:06:452
278092264235,19sleep00-21swapper/019:09:180
276632263232,21sleep30-21swapper/319:07:233
15302650,0sleep20-21swapper/222:38:532
189192630,0sleep20-21swapper/200:08:332
312182580,0sleep30-21swapper/321:57:243
80592460,0sleep30-21swapper/323:41:513
315532170,0sleep00-21swapper/023:36:160
311372150,0sleep10-21swapper/122:36:381
288492150,1sleep012-21ksoftirqd/022:35:170
23512150,0sleep10-21swapper/122:19:581
156742130,0sleep20-21swapper/221:05:132
237472120,0sleep30-21swapper/321:13:313
24895290,0sleep20-21swapper/221:14:262
9179280,0sleep20-21swapper/200:22:062
3739280,0sleep30-21swapper/300:19:153
279809983,3cyclictest275-21systemd-journal19:41:433
279769983,1cyclictest13142-1kworker/u9:221:20:202
279739986,1cyclictest17137-21sh22:08:561
8621270,0sleep00-21swapper/021:43:550
279809976,1cyclictest17456-21diskmemload22:54:423
279809973,3cyclictest658-21snmpd21:48:423
279809973,3cyclictest29723-21ntpq23:35:173
279809973,3cyclictest28259-21ls22:55:153
279809973,3cyclictest18515-21cron22:10:013
279809973,3cyclictest11098-21wc22:25:013
279809972,3cyclictest275-21systemd-journal23:57:183
279769974,2cyclictest18935-21cstates21:50:142
279769973,3cyclictest504-21dbus-daemon22:25:012
279769973,3cyclictest504-21dbus-daemon22:15:012
279769973,3cyclictest504-21dbus-daemon20:00:002
279769973,1cyclictest13011-21basename21:00:002
279769972,3cyclictest658-21snmpd23:32:042
279769970,6cyclictest0-21swapper/200:15:392
279739976,1cyclictest22-21ksoftirqd/120:15:001
279739974,2cyclictest7622-21sshd23:02:021
279739973,3cyclictest1-21systemd20:32:501
279739970,3cyclictest17907-21awk21:30:001
279689973,3cyclictest29828-21cron20:25:000
279689973,3cyclictest19268-21smart_sda21:10:180
279689973,3cyclictest18120-21sshd23:48:210
17115270,0sleep10-21swapper/123:07:541
16063270,0sleep30-21swapper/323:26:543
12482270,0sleep00-21swapper/023:05:120
279809966,0cyclictest0-21swapper/321:26:233
279809963,2cyclictest7161-21ssh22:02:313
279809963,2cyclictest658-21snmpd20:44:183
279809963,2cyclictest658-21snmpd19:21:243
279809963,2cyclictest5750-21ssh00:00:133
279809963,2cyclictest4658-21diskstats23:20:143
279809963,2cyclictest32175-21sh00:35:403
279809963,2cyclictest304-21systemd-udevd20:57:353
279809963,2cyclictest28357-21grep20:20:133
279809963,2cyclictest275-21systemd-journal21:08:503
279809963,2cyclictest2084-21ssh22:39:183
279809963,2cyclictest16093-21ssh23:07:063
279809963,2cyclictest13279-21cat23:45:143
279809963,1cyclictest0-21swapper/321:50:583
279809962,3cyclictest7872-21ssh22:42:253
279809962,3cyclictest658-21snmpd23:16:563
279809962,3cyclictest658-21snmpd22:25:073
279809962,3cyclictest658-21snmpd21:40:563
279809962,3cyclictest658-21snmpd20:46:103
279809962,3cyclictest658-21snmpd20:37:043
279809962,3cyclictest658-21snmpd20:33:223
279809962,3cyclictest658-21snmpd19:50:443
279809962,3cyclictest5634-21expr19:30:143
279809962,3cyclictest4261-21cut23:00:133
279809962,3cyclictest275-21systemd-journal00:12:213
279809962,3cyclictest26826-21cat21:15:143
279809962,3cyclictest26731-21cstates21:35:113
279809962,3cyclictest2644-21cat21:20:163
279809962,3cyclictest19552-21ssh00:28:353
279809962,3cyclictest19336-21cat20:00:153
279809962,3cyclictest13669-21sshd19:46:423
279809962,3cyclictest13306-21ls00:05:123
279809962,2cyclictest658-21snmpd23:34:243
279809962,2cyclictest275-21systemd-journal19:11:403
279809962,1cyclictest0-21swapper/323:10:163
279809962,1cyclictest0-21swapper/322:33:103
279809961,2cyclictest556-21ssh22:18:333
279809960,2cyclictest23073-21/usr/sbin/munin20:10:133
279809960,2cyclictest18751-21df21:30:123
279809960,0cyclictest0-21swapper/323:51:503
279809960,0cyclictest0-21swapper/300:30:253
279769966,0cyclictest0-21swapper/222:26:402
279769963,2cyclictest7539-21ssh22:02:502
279769963,2cyclictest7207-21sh23:21:192
279769963,2cyclictest5307-21apt-get19:30:122
279769963,2cyclictest2772-21ssh23:58:452
279769963,2cyclictest275-21systemd-journal20:12:222
279769963,2cyclictest20685-21ssh23:50:132
279769963,2cyclictest14653-21ssh23:25:472
279769963,1cyclictest0-21swapper/221:45:352
279769962,3cyclictest6921-21expr20:45:102
279769962,3cyclictest658-21snmpd23:37:432
279769962,3cyclictest658-21snmpd23:12:262
279769962,3cyclictest658-21snmpd21:36:062
279769962,3cyclictest658-21snmpd20:15:552
279769962,3cyclictest658-21snmpd20:06:452
279769962,3cyclictest658-21snmpd19:37:532
279769962,3cyclictest658-21snmpd19:13:232
279769962,3cyclictest658-21snmpd00:32:232
279769962,3cyclictest658-21snmpd00:10:102
279769962,3cyclictest658-21snmpd00:03:012
279769962,3cyclictest31088-21awk19:15:122
279769962,3cyclictest30907-21ls20:25:152
279769962,3cyclictest18686-21expr21:30:132
279769962,3cyclictest14864-21cat19:50:142
279769962,3cyclictest13995-21expr21:00:122
279769962,3cyclictest13158-21ntpq23:05:172
279769962,3cyclictest0-21swapper/222:56:572
279769962,1cyclictest0-21swapper/200:36:552
279769962,1cyclictest0-21swapper/200:25:562
279769960,5cyclictest28174-21expr20:20:122
279769960,0cyclictest0-21swapper/222:42:402
279769960,0cyclictest0-21swapper/222:33:042
279739966,0cyclictest0-21swapper/123:20:241
279739966,0cyclictest0-21swapper/123:16:031
279739966,0cyclictest0-21swapper/121:36:341
279739964,1cyclictest12274-21hddtemp_smartct22:45:141
279739963,2cyclictest6799-21sh21:22:491
279739963,2cyclictest658-21snmpd21:48:061
279739963,2cyclictest658-21snmpd19:16:081
279739963,2cyclictest504-21dbus-daemon23:50:501
279739963,2cyclictest504-21dbus-daemon21:55:131
279739963,2cyclictest504-21dbus-daemon19:56:301
279739963,2cyclictest27785-21rm22:55:051
279739963,2cyclictest25179-21ssh21:34:191
279739963,2cyclictest23288-21ssh21:13:111
279739963,2cyclictest16665-21sh23:47:131
279739963,2cyclictest13181-21cut19:45:191
279739963,2cyclictest12881-21sh00:05:041
279739963,2cyclictest0-21swapper/122:40:111
279739962,3cyclictest658-21snmpd23:43:391
279739962,3cyclictest658-21snmpd23:33:001
279739962,3cyclictest658-21snmpd22:25:401
279739962,3cyclictest658-21snmpd22:11:521
279739962,3cyclictest658-21snmpd21:44:421
279739962,3cyclictest658-21snmpd20:28:031
279739962,3cyclictest658-21snmpd20:08:361
279739962,3cyclictest658-21snmpd20:01:311
279739962,3cyclictest658-21snmpd19:42:381
279739962,3cyclictest658-21snmpd19:28:111
279739962,3cyclictest658-21snmpd00:25:261
279739962,3cyclictest658-21snmpd00:15:521
279739962,3cyclictest5492-21expr19:30:121
279739962,3cyclictest504-21dbus-daemon20:17:451
279739962,3cyclictest504-21dbus-daemon19:10:171
279739962,3cyclictest30111-21cat00:35:111
279739962,3cyclictest13006-21systemctl21:00:001
279739962,1cyclictest29846-21sh20:25:001
279739961,2cyclictest18017-21kworker/u8:223:36:341
279739960,6cyclictest0-21swapper/123:55:591
279739960,6cyclictest0-21swapper/100:22:061
279739960,0cyclictest0-21swapper/123:27:151
279739960,0cyclictest0-21swapper/100:11:151
279689963,2cyclictest6909-21ssh22:02:190
279689963,2cyclictest658-21snmpd23:26:150
279689963,2cyclictest658-21snmpd21:28:310
279689963,2cyclictest658-21snmpd21:19:160
279689963,2cyclictest658-21snmpd00:01:130
279689963,2cyclictest5971-11brltty20:41:150
279689963,2cyclictest3592-21sh00:38:410
279689963,2cyclictest31729-21sh22:56:560
279689963,2cyclictest29258-21ssh22:15:370
279689963,2cyclictest275-21systemd-journal20:26:100
279689963,2cyclictest275-21systemd-journal20:15:010
279689963,2cyclictest24135-21tr20:10:150
279689963,2cyclictest23828-21ssh22:32:200
279689963,2cyclictest15539-21ssh00:25:270
279689963,2cyclictest10628-21sshd20:53:220
279689963,2cyclictest10596-21rm23:24:000
279689963,2cyclictest1022-21gzip20:30:180
279689963,1cyclictest0-21swapper/000:15:270
279689962,3cyclictest658-21snmpd23:15:330
279689962,3cyclictest658-21snmpd22:42:070
279689962,3cyclictest658-21snmpd22:25:160
279689962,3cyclictest658-21snmpd21:51:330
279689962,3cyclictest658-21snmpd21:05:220
279689962,3cyclictest658-21snmpd21:03:080
279689962,3cyclictest658-21snmpd19:58:510
279689962,3cyclictest658-21snmpd19:46:330
279689962,3cyclictest658-21snmpd19:27:170
279689962,3cyclictest658-21snmpd00:34:170
279689962,3cyclictest560-21gdbus20:40:000
279689962,3cyclictest5324-21sort00:20:120
279689962,3cyclictest3726-21tune2fs22:20:140
279689962,3cyclictest32464-21sed19:15:190
279689962,3cyclictest30667-21ls23:55:190
279689962,3cyclictest27959-21sed21:55:180
279689962,3cyclictest275-21systemd-journal23:14:570
279689962,3cyclictest2316-21expr21:20:140
279689962,3cyclictest21768-21ntpq23:50:190
279689962,3cyclictest21195-21cat23:30:130
279689962,3cyclictest10739-21expr21:45:120
279689962,1cyclictest0-21swapper/022:06:030
279689962,1cyclictest0-21swapper/000:10:360
279689960,2cyclictest275-21systemd-journal19:36:410
2805250,0sleep10-21swapper/122:20:021
279809952,2cyclictest8791-21find20:50:123
279809952,2cyclictest658-21snmpd19:25:033
279809952,2cyclictest5279-21cat00:20:113
279809952,2cyclictest31707-21cat19:15:143
279809952,2cyclictest30774-21cat20:25:153
279809952,2cyclictest26576-21uname20:15:163
279809952,2cyclictest22577-21chrt20:06:493
279809952,2cyclictest18973-21ssh22:10:113
279809952,2cyclictest11514-21ssh22:45:073
279809951,3cyclictest17886-21grep19:55:193
279809950,4cyclictest7502-21/usr/sbin/munin19:35:123
279809950,2cyclictest13243-21/usr/sbin/munin21:00:093
279769955,0cyclictest0-21swapper/221:25:052
279769955,0cyclictest0-21swapper/220:50:192
279769953,1cyclictest663-21runrttasks22:45:112
279769952,2cyclictest658-21snmpd23:40:102
279769952,2cyclictest658-21snmpd21:15:102
279769952,2cyclictest5039-21mailstats23:00:182
279769952,2cyclictest4359-21cat20:40:112
279769952,2cyclictest3742-21cat19:25:142
279769952,2cyclictest26935-21sh22:15:022
279769952,2cyclictest2074-21rm21:40:012
279769952,2cyclictest20220-21sh22:50:142
279769952,2cyclictest1647-21date19:20:152
279769952,2cyclictest10236-21cut19:40:142
279769952,1cyclictest0-21swapper/223:45:062
279769952,1cyclictest0-21swapper/223:15:142
279769952,1cyclictest0-21swapper/222:05:062
279769951,3cyclictest674-21lldpd20:01:272
279769951,3cyclictest658-21snmpd20:30:062
279769951,3cyclictest2787-21cat20:35:152
279769951,3cyclictest27748-21expr21:55:162
279769951,3cyclictest12470-21fschecks_time19:45:152
279739953,1cyclictest19449-21ssh22:50:011
279739953,1cyclictest16378-21needreboot21:05:181
279739952,3cyclictest17657-21kworker/1:122:00:041
279739952,2cyclictest8021-21tune2fs19:35:131
279739952,2cyclictest6662-21cat20:45:101
279739952,2cyclictest658-21snmpd21:03:521
279739952,2cyclictest658-21snmpd19:50:201
279739952,2cyclictest6247-21chrt20:44:021
279739952,2cyclictest3514-21wc20:35:201
279739952,2cyclictest28171-21seq21:15:361
279739952,2cyclictest275-21systemd-journal00:00:001
279739952,2cyclictest21352-21ssh22:30:221
279739952,2cyclictest21000-21cat23:10:151
279739952,2cyclictest18621-21ssh21:50:101
279739952,2cyclictest1001-21expr19:20:121
279739951,3cyclictest658-21snmpd20:50:011
279739950,4cyclictest22247-21df00:30:141
279689953,1cyclictest4384-21sh23:40:100
279689952,2cyclictest7797-21swap20:45:170
279689952,2cyclictest658-21snmpd20:00:060
279689952,2cyclictest658-21snmpd19:41:300
279689952,2cyclictest3596-21rm23:00:070
279689952,2cyclictest27235-21ssh21:35:140
279689952,2cyclictest21034-21grep20:05:110
279689952,2cyclictest20031-21ntp_kernel_pll_22:10:180
279689952,2cyclictest18126-21ssh21:30:010
279689952,2cyclictest15272-21proc_pri19:50:170
279689952,2cyclictest11531-21ssh22:45:080
279689952,2cyclictest11191-21expr20:55:130
279689952,2cyclictest10833-11brltty19:30:080
279689951,3cyclictest658-21snmpd19:14:220
279689951,3cyclictest20219-21df_inode22:50:140
279689951,3cyclictest1471-21sed19:20:140
279689951,3cyclictest13158-21/usr/sbin/munin00:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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