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2026-08-09 - 12:02
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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 Sun Aug 09, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
254172298268,19sleep20-21swapper/219:08:162
255522284257,18sleep10-21swapper/119:10:001
251962268238,19sleep00-21swapper/019:05:400
254842265212,16sleep30-21swapper/319:09:103
225222610,0sleep00-21swapper/023:50:070
305392580,0sleep20-21swapper/221:18:492
299852550,0sleep00-21swapper/000:33:120
191992550,0sleep10-21swapper/123:08:521
173032550,0sleep10-21swapper/100:25:201
120402540,0sleep30-21swapper/323:24:163
10492540,0sleep30-21swapper/300:35:153
276132230,0sleep00-21swapper/023:13:590
9542190,2sleep122-21ksoftirqd/121:20:161
63042190,0sleep00-21swapper/000:19:180
327132180,0sleep10-21swapper/100:35:091
304712180,0sleep00-21swapper/023:35:140
96962160,0sleep30-21swapper/321:45:093
135622160,0sleep10-21swapper/121:46:561
232342140,0sleep30-21swapper/300:10:003
260972130,0sleep10-21swapper/120:20:141
23122130,0sleep10-21swapper/122:19:351
31631290,0sleep30-21swapper/322:36:393
27991290,0sleep30-21swapper/321:36:033
256579996,2cyclictest658-21snmpd00:23:560
8338280,0sleep20-21swapper/222:42:172
32246280,0sleep00-21swapper/022:56:420
256699985,2cyclictest15552-21diskmemload23:35:133
256699983,3cyclictest275-21systemd-journal19:40:013
256659982,3cyclictest27582-21munin-run20:25:002
256619986,1cyclictest6786-21users19:35:231
256619982,3cyclictest9452-21dump-pmu-power19:45:001
256579987,1cyclictest12-21ksoftirqd/000:30:000
256699976,1cyclictest6076-21ssh00:19:073
256699973,3cyclictest275-21systemd-journal22:02:323
256699973,3cyclictest15121-21apt-get00:05:153
256699972,4cyclictest504-11dbus-daemon21:03:573
256659976,1cyclictest1351-21ssh00:15:282
256659976,1cyclictest0-21swapper/223:13:252
256659973,3cyclictest9703-21apt19:45:132
256659973,3cyclictest7295-21diskstats20:50:132
256659970,2cyclictest18723-21munin-run22:10:012
256619977,0cyclictest0-21swapper/100:00:441
256619973,3cyclictest658-21snmpd23:16:101
256619973,3cyclictest504-21dbus-daemon22:10:011
256579974,2cyclictest24715-21df_inode21:15:130
256579973,3cyclictest658-21snmpd21:52:200
256579973,1cyclictest0-21swapper/021:47:490
256579973,1cyclictest0-21swapper/000:39:170
22326270,0sleep00-21swapper/000:09:360
256699966,0cyclictest0-21swapper/323:30:173
256699963,2cyclictest592-21rm23:55:393
256699963,2cyclictest5424-21cat23:00:173
256699963,2cyclictest504-21dbus-daemon19:31:443
256699963,2cyclictest504-21dbus-daemon19:31:443
256699963,2cyclictest29986-21sh21:18:233
256699963,2cyclictest275-21systemd-journal21:41:513
256699963,2cyclictest21438-21ssh21:51:223
256699963,2cyclictest16627-21sh23:26:113
256699963,1cyclictest0-21swapper/322:15:523
256699963,1cyclictest0-21swapper/300:00:083
256699962,3cyclictest9521-21ntpq21:25:183
256699962,3cyclictest8316-21expr00:20:143
256699962,3cyclictest658-21snmpd23:11:253
256699962,3cyclictest658-21snmpd22:58:033
256699962,3cyclictest658-21snmpd22:45:363
256699962,3cyclictest658-21snmpd22:40:033
256699962,3cyclictest658-21snmpd22:30:033
256699962,3cyclictest658-21snmpd21:23:573
256699962,3cyclictest658-21snmpd20:50:443
256699962,3cyclictest658-21snmpd20:46:203
256699962,3cyclictest658-21snmpd20:40:263
256699962,3cyclictest658-21snmpd20:37:443
256699962,3cyclictest658-21snmpd20:33:013
256699962,3cyclictest658-21snmpd20:28:373
256699962,3cyclictest658-21snmpd20:20:403
256699962,3cyclictest658-21snmpd20:15:133
256699962,3cyclictest658-21snmpd19:37:423
256699962,3cyclictest3384-21awk22:20:133
256699962,3cyclictest275-21systemd-journal21:05:313
256699962,3cyclictest25282-21cat00:30:153
256699962,3cyclictest20376-21sed22:10:213
256699962,3cyclictest16620-21expr21:10:153
256699962,1cyclictest0-21swapper/323:51:113
256699962,1cyclictest0-21swapper/323:47:243
256699962,1cyclictest0-21swapper/323:05:043
256699962,1cyclictest0-21swapper/322:05:043
256699962,1cyclictest0-21swapper/321:57:163
256699962,1cyclictest0-21swapper/300:25:193
256699960,6cyclictest0-21swapper/323:18:013
256699960,6cyclictest0-21swapper/322:25:353
256699960,0cyclictest0-21swapper/321:31:413
256659966,0cyclictest0-21swapper/222:32:242
256659966,0cyclictest0-21swapper/221:55:282
256659965,1cyclictest28-21ksoftirqd/221:25:012
256659963,2cyclictest8654-21sh23:21:382
256659963,2cyclictest7990-21ssh23:01:352
256659963,2cyclictest501-21in:imuxsock19:45:012
256659963,2cyclictest31849-21ssh22:56:232
256659963,2cyclictest24848-21uname00:10:182
256659963,2cyclictest24159-21memory20:15:192
256659963,2cyclictest22546-21cat20:10:202
256659963,2cyclictest17482-21sh23:26:522
256659963,2cyclictest1-21systemd19:20:192
256659963,2cyclictest0-21swapper/222:47:102
256659962,4cyclictest3858-1kworker/u9:000:25:192
256659962,3cyclictest658-21snmpd23:42:062
256659962,3cyclictest658-21snmpd22:13:532
256659962,3cyclictest658-21snmpd22:03:382
256659962,3cyclictest658-21snmpd21:07:412
256659962,3cyclictest658-21snmpd20:32:132
256659962,3cyclictest658-21snmpd19:55:352
256659962,3cyclictest658-21snmpd00:32:392
256659962,3cyclictest5474-21cat19:35:142
256659962,3cyclictest3498-21perl19:30:132
256659962,3cyclictest3498-21perl19:30:132
256659962,3cyclictest30193-21cut23:15:162
256659962,3cyclictest29691-11brltty20:40:072
256659962,3cyclictest22446-21ls23:30:152
256659962,3cyclictest16526-21grep21:10:142
256659962,3cyclictest15614-21fschecks_time00:05:172
256659960,6cyclictest0-21swapper/223:56:212
256659960,6cyclictest0-21swapper/223:53:422
256659960,6cyclictest0-21swapper/223:07:532
256659960,6cyclictest0-21swapper/221:54:302
256659960,6cyclictest0-21swapper/221:25:162
256659960,6cyclictest0-21swapper/200:01:382
256619966,0cyclictest0-21swapper/122:38:061
256619966,0cyclictest0-21swapper/100:31:461
256619966,0cyclictest0-21swapper/100:11:191
256619963,2cyclictest9009-21ssh23:02:221
256619963,2cyclictest5631-21ntp_states20:45:181
256619963,2cyclictest2928-21sshd23:57:271
256619963,2cyclictest275-21systemd-journal22:47:071
256619963,2cyclictest27474-21ssh23:52:441
256619963,2cyclictest26548-21cat19:10:171
256619963,2cyclictest24318-21ssh21:15:121
256619963,2cyclictest22536-21cat20:10:201
256619963,2cyclictest19922-21ssh21:12:001
256619963,2cyclictest19213-21ssh23:47:431
256619963,2cyclictest11638-21ssh22:25:121
256619962,3cyclictest658-21snmpd22:52:241
256619962,3cyclictest658-21snmpd21:32:021
256619962,3cyclictest658-21snmpd21:00:171
256619962,3cyclictest658-21snmpd20:54:051
256619962,3cyclictest658-21snmpd20:36:591
256619962,3cyclictest658-21snmpd19:58:091
256619962,3cyclictest658-21snmpd19:25:121
256619962,3cyclictest658-21snmpd19:17:201
256619962,3cyclictest658-21snmpd00:07:561
256619962,3cyclictest32643-21seq19:21:431
256619962,3cyclictest28793-21dpkg22:55:121
256619962,3cyclictest275-21systemd-journal21:51:531
256619962,3cyclictest26976-21expr21:55:141
256619962,3cyclictest13711-21grep21:05:121
256619962,1cyclictest0-21swapper/123:25:121
256619961,3cyclictest25270-21sh23:12:111
256619960,6cyclictest0-21swapper/123:24:461
256619960,6cyclictest0-21swapper/121:36:301
256619960,6cyclictest0-21swapper/100:21:031
256619960,2cyclictest5457-21sort22:40:201
256619960,2cyclictest32293-21df00:15:141
256619960,2cyclictest25340-21munin-run20:20:001
256619960,0cyclictest0-21swapper/123:30:251
256619960,0cyclictest0-21swapper/121:41:121
256579966,0cyclictest0-21swapper/022:03:250
256579966,0cyclictest0-21swapper/021:55:360
256579966,0cyclictest0-21swapper/021:14:340
256579965,1cyclictest12-21ksoftirqd/019:15:010
256579963,2cyclictest658-21snmpd22:11:500
256579963,2cyclictest6290-40mandb00:00:000
256579963,2cyclictest504-21dbus-daemon22:29:270
256579963,2cyclictest3394-21apt-get22:20:130
256579963,2cyclictest31049-21cat20:30:150
256579963,2cyclictest275-21systemd-journal19:41:450
256579963,2cyclictest23584-21sh22:31:490
256579963,2cyclictest22760-11brltty22:37:010
256579963,2cyclictest21026-21tune2fs22:50:140
256579963,2cyclictest17404-21ssh22:09:000
256579963,2cyclictest16640-21ssh23:45:440
256579963,2cyclictest16092-21ssh23:25:460
256579963,2cyclictest15242-21ssh23:05:480
256579963,2cyclictest12970-21chrt21:00:490
256579963,0cyclictest141rcu_preempt20:35:120
256579962,3cyclictest658-21snmpd23:15:330
256579962,3cyclictest658-21snmpd22:15:070
256579962,3cyclictest658-21snmpd21:40:480
256579962,3cyclictest658-21snmpd21:37:000
256579962,3cyclictest658-21snmpd20:57:470
256579962,3cyclictest658-21snmpd20:22:400
256579962,3cyclictest658-21snmpd20:05:310
256579962,3cyclictest658-21snmpd20:02:130
256579962,3cyclictest658-21snmpd19:38:000
256579962,3cyclictest658-21snmpd19:30:110
256579962,3cyclictest658-21snmpd19:30:110
256579962,3cyclictest658-21snmpd19:27:360
256579962,3cyclictest658-21snmpd00:00:410
256579962,3cyclictest5339-21cat20:45:160
256579962,3cyclictest4440-21cat22:40:130
256579962,3cyclictest27823-21find20:25:130
256579962,3cyclictest24212-21sed00:10:140
256579962,3cyclictest17059-21expr21:30:130
256579962,3cyclictest13374-21ntpq22:45:170
256579962,3cyclictest1-21systemd21:05:190
256579962,1cyclictest0-21swapper/023:20:240
256579962,1cyclictest0-21swapper/023:01:520
256579960,6cyclictest0-21swapper/023:40:500
256579960,5cyclictest1887-21grep21:20:200
256579960,4cyclictest275-21systemd-journal19:50:130
256579960,0cyclictest0-21swapper/021:25:450
21449260,1sleep321597-21ntp_states22:50:163
14319260,1sleep3331rcuc/319:55:023
256699952,2cyclictest658-21snmpd23:40:043
256699952,2cyclictest504-21dbus-daemon19:10:033
256699952,2cyclictest32560-21chrt19:20:423
256699952,2cyclictest28832-21sort19:15:123
256699952,2cyclictest21510-21expr20:10:133
256699952,2cyclictest19889-21awk20:05:173
256699952,2cyclictest12381-21sort19:50:163
256699952,2cyclictest10375-21cat19:45:163
256699951,3cyclictest753-21/usr/sbin/munin19:25:183
256699951,3cyclictest17365-21cat20:00:183
256699951,3cyclictest10084-21ntp_states20:55:173
256659953,1cyclictest3869-21grep22:20:162
256659953,1cyclictest28049-21fschecks_time22:15:152
256659953,1cyclictest16950-21expr20:00:142
256659952,2cyclictest658-21snmpd21:40:022
256659952,2cyclictest658-21snmpd21:30:062
256659952,2cyclictest658-21snmpd20:36:322
256659952,2cyclictest658-21snmpd19:50:032
256659952,2cyclictest658-21snmpd19:25:092
256659952,2cyclictest658-21snmpd19:10:072
256659952,2cyclictest658-21snmpd00:20:112
256659952,2cyclictest4939-21expr20:45:142
256659952,2cyclictest30557-21cstates23:35:132
256659952,2cyclictest28341-21cat22:35:142
256659952,2cyclictest28258-21munin-node19:15:022
256659952,2cyclictest19938-21tr20:05:192
256659952,2cyclictest11567-21cat21:00:132
256659952,2cyclictest10676-21vmstat20:55:212
256659951,3cyclictest9695-21ssh21:45:092
256659951,3cyclictest658-21snmpd20:25:222
256659951,3cyclictest32723-21ssh00:35:092
256659951,3cyclictest26083-21cat21:35:162
256659951,3cyclictest14098-21ssh23:45:012
256659951,3cyclictest12719-21netstat22:25:182
256659950,3cyclictest20342-21rm22:50:042
256619953,1cyclictest30131-21sh23:35:041
256619952,2cyclictest9799-21cat20:55:151
256619952,2cyclictest658-21snmpd19:47:261
256619952,2cyclictest504-21dbus-daemon20:30:011
256619952,2cyclictest501-21in:imuxsock21:25:131
256619952,2cyclictest3370-21expr19:30:121
256619952,2cyclictest3370-21expr19:30:121
256619952,2cyclictest27820-21taskset20:25:131
256619952,2cyclictest2746-21expr20:40:121
256619952,2cyclictest19823-21rm22:30:071
256619952,2cyclictest19588-21cat20:05:161
256619952,2cyclictest12145-21expr19:50:141
256619951,3cyclictest5929-21seq23:40:021
256619951,3cyclictest4778-21grep22:20:211
256619951,3cyclictest18983-21ssh22:10:031
256619951,3cyclictest16803-21/usr/sbin/munin20:00:151
256619950,4cyclictest2485-21runrttasks22:00:091
256579952,2cyclictest658-21snmpd20:52:560
256579952,2cyclictest658-21snmpd20:15:040
256579952,2cyclictest658-21snmpd19:57:570
256579952,2cyclictest658-21snmpd19:45:120
256579952,2cyclictest32107-21wc19:20:190
256579952,2cyclictest26967-21processes19:10:200
256579951,3cyclictest2420-21/usr/sbin/munin20:40:190
256579951,3cyclictest23531-21cat23:30:220
256579951,3cyclictest21351-21cat20:10:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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