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2026-08-27 - 15:03
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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 rack1slot2.osadl.org (updated Thu Aug 27, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2940226766,0sleep10-21swapper/107:28:071
2952723626,0sleep20-21swapper/207:29:362
2965723127,0sleep00-21swapper/007:31:060
2277422824,0sleep30-21swapper/307:26:213
339960,0migration/38377-21sh12:21:393
339960,0migration/33776-21sh09:50:523
339960,0migration/33423-21sh12:40:513
339960,0migration/332609-21sh10:43:463
339960,0migration/329049-21missed_timers08:56:343
339960,0migration/326515-21sh09:43:223
339960,0migration/325601-21sh09:40:173
339960,0migration/322119-21munin-node12:51:333
339960,0migration/313945-21kthreadcore07:41:323
339960,0migration/310416-21sh11:08:013
29815060,0irq/29-eth0-tx-26713-21munin-node08:36:290
29805060,0irq/28-eth0-rx-8609-21ps08:21:333
29805060,0irq/28-eth0-rx-8048-21grep10:46:413
29805060,0irq/28-eth0-rx-6314-21runrttasks12:31:263
29805060,0irq/28-eth0-rx-30994-21perl10:06:303
29805060,0irq/28-eth0-rx-0-21swapper/309:36:113
297429966,0cyclictest0-21swapper/211:51:422
297429960,0cyclictest0-21swapper/212:55:422
297429960,0cyclictest0-21swapper/209:56:172
297429960,0cyclictest0-21swapper/209:44:472
297409963,0cyclictest1410-21kworker/0:210:31:350
149960,0migration/029811-21turbostat10:06:160
149960,0migration/023615-21sh11:55:490
149960,0migration/016853-21sh09:56:330
8305050,0irq/26-0000:00:29981-21telnet07:31:263
8305050,0irq/26-0000:00:18888-21munin-run12:31:162
4150,0ktimersoftd/00-21swapper/011:10:070
339950,0migration/37168-21kthreadcore09:06:333
339950,0migration/35415-21kthreadcore12:01:343
339950,0migration/34387-21aten_r1power_vo09:51:283
339950,0migration/329928-21diskmemload11:21:323
339950,0migration/329690-21taskset11:38:523
339950,0migration/329659-21kthreadcore11:01:313
339950,0migration/328113-21kthreadcore07:51:323
339950,0migration/326645-21kthreadcore08:11:333
339950,0migration/326129-21kthreadcore10:21:333
339950,0migration/325823-21taskset07:46:433
339950,0migration/322031-21switchtime08:06:403
339950,0migration/321361-21munin-node11:16:303
339950,0migration/321023-21munin-node10:16:373
339950,0migration/319034-21taskset08:28:333
339950,0migration/317734-21kthreadcore09:11:343
339950,0migration/312891-21df_abs12:46:273
339950,0migration/312739-21switchtime10:11:413
329950,0watchdog/34584-21yum09:01:423
329950,0watchdog/322308-21kthreadcore08:31:303
329950,0watchdog/30-21swapper/310:56:313
29815050,0irq/29-eth0-tx-5416-21ssh10:09:392
29815050,0irq/29-eth0-tx-3524-21snmpd11:34:372
29815050,0irq/29-eth0-tx-2546-21ssh12:38:202
29815050,0irq/29-eth0-tx-12474-21munin-node12:46:332
29815050,0irq/29-eth0-tx-12242-21diskstats11:11:302
29815050,0irq/29-eth0-tx-0-21swapper/212:01:292
29815050,0irq/29-eth0-tx-0-21swapper/009:31:350
29815050,0irq/29-eth0-tx-0-21swapper/009:06:280
29815050,0irq/29-eth0-tx-0-21swapper/008:31:400
29805050,0irq/28-eth0-rx-5353-21grep11:26:273
29805050,0irq/28-eth0-rx-27139-21kthreadcore10:01:353
29805050,0irq/28-eth0-rx-26091-21cpuspeed_turbos12:16:293
29805050,0irq/28-eth0-rx-25106-21ssh11:56:313
29805050,0irq/28-eth0-rx-16650-21if_eth111:51:323
29805050,0irq/28-eth0-rx-1004-21kthreadcore12:56:333
29805050,0irq/28-eth0-rx-0-21swapper/312:41:243
29805050,0irq/28-eth0-rx-0-21swapper/311:32:173
29805050,0irq/28-eth0-rx-0-21swapper/311:11:433
29805050,0irq/28-eth0-rx-0-21swapper/310:52:303
29805050,0irq/28-eth0-rx-0-21swapper/310:37:073
29805050,0irq/28-eth0-rx-0-21swapper/310:31:283
29805050,0irq/28-eth0-rx-0-21swapper/310:26:343
297429950,0cyclictest0-21swapper/212:07:472
297429950,0cyclictest0-21swapper/210:43:542
297429950,0cyclictest0-21swapper/210:11:252
297419955,0cyclictest0-21swapper/110:53:051
297419955,0cyclictest0-21swapper/109:51:551
297419954,0cyclictest13315-21ssh10:12:341
297419950,0cyclictest0-21swapper/112:18:231
297409951,0cyclictest2891-21kworker/0:011:41:350
297409950,0cyclictest0-21swapper/009:36:310
27150,0ktimersoftd/20-21swapper/212:23:142
27150,0ktimersoftd/20-21swapper/211:10:072
27150,0ktimersoftd/20-21swapper/210:57:562
259950,0migration/24440-21sh12:58:182
259950,0migration/224662-21fschecks_count11:56:292
259950,0migration/224206-21sh12:12:232
259950,0migration/221730-21kthreadcore10:36:342
259950,0migration/220327-21sh11:16:182
249950,0watchdog/225367-21ssh09:39:432
19150,0ktimersoftd/10-21swapper/111:34:521
179950,0migration/17438-21kthreadcore12:41:351
179950,0migration/13111-21latency_hist11:06:161
179950,0migration/129302-21taskset10:04:491
179950,0migration/128575-21sendmail_mailtr11:36:381
179950,0migration/116968-21smart_nvme0n112:26:381
179950,0migration/11459-21kthreadcore11:41:351
179950,0migration/111812-21kthreadcore08:01:321
169950,0watchdog/19683-21fschecks_time09:31:311
169950,0watchdog/114927-21aten_r1power_fr10:16:271
149950,0migration/0851-21kthreadcore10:06:340
149950,0migration/08446-21kthreadcore09:51:340
149950,0migration/05616-21kthreadcore10:46:340
149950,0migration/03331-21irqcore12:21:330
149950,0migration/032275-21kthreadcore09:46:340
149950,0migration/031161-21kthreadcore12:36:330
149950,0migration/030477-21kthreadcore10:41:350
149950,0migration/030385-21fschecks_time12:56:280
149950,0migration/029676-21kthreadcore09:21:330
149950,0migration/029184-21sh11:37:220
149950,0migration/028607-21sh12:54:250
149950,0migration/027510-21fschecks_count11:01:270
149950,0migration/025887-21sh12:31:440
149950,0migration/02493-21kthreadcore10:26:340
149950,0migration/024420-21kthreadcore09:16:340
149950,0migration/021851-21sh10:17:390
149950,0migration/018862-21kthreadcore08:51:330
149950,0migration/018475-21munin-node08:26:360
149950,0migration/018346-21switchtime07:41:390
149950,0migration/017425-21kthreadcore08:06:330
149950,0migration/017374-21aten_r1power_en12:11:280
149950,0migration/016920-21rt-features12:26:370
149950,0migration/015690-21latency_hist08:06:150
149950,0migration/015282-21latency_hist11:51:160
149950,0migration/015282-21latency_hist11:51:160
149950,0migration/014699-21idleruntime11:31:310
149950,0migration/014179-21kthreadcore12:46:320
149950,0migration/013451-21taskset10:13:000
149950,0migration/012970-21fschecks_count09:11:290
149950,0migration/012493-21kthreadcore10:51:410
149950,0migration/010612-21kthreadcore08:46:330
8305040,0irq/26-0000:00:4843-21latency_hist11:26:162
8305040,0irq/26-0000:00:0-21swapper/309:19:453
8305040,0irq/26-0000:00:0-21swapper/212:31:162
339940,0migration/38491-21latency_hist08:01:153
339940,0migration/332081-21kthreadcore08:16:333
339940,0migration/331723-21kthreadcore08:36:353
339940,0migration/312348-21kthreadcore08:01:323
329940,0watchdog/30-21swapper/309:26:113
329940,0watchdog/30-21swapper/308:43:143
29815040,0irq/29-eth0-tx-31872-21ssh10:26:202
29815040,0irq/29-eth0-tx-0-21swapper/211:42:032
29815040,0irq/29-eth0-tx-0-21swapper/211:01:362
29815040,0irq/29-eth0-tx-0-21swapper/209:51:292
29815040,0irq/29-eth0-tx-0-21swapper/209:46:312
29805040,0irq/28-eth0-rx-9933-21munin-node12:06:333
29805040,0irq/28-eth0-rx-0-21swapper/312:29:103
29805040,0irq/28-eth0-rx-0-21swapper/312:13:503
29805040,0irq/28-eth0-rx-0-21swapper/311:46:243
29805040,0irq/28-eth0-rx-0-21swapper/311:46:243
29805040,0irq/28-eth0-rx-0-21swapper/311:42:323
29805040,0irq/28-eth0-rx-0-21swapper/309:56:403
297429943,0cyclictest3571-21lldpd09:22:252
297429943,0cyclictest3571-21lldpd08:56:252
297429943,0cyclictest3571-21lldpd08:53:562
297429943,0cyclictest3571-21lldpd08:13:552
297429943,0cyclictest3524-21snmpd11:21:242
297429943,0cyclictest3250-21irqbalance11:36:222
297429943,0cyclictest3250-21irqbalance10:51:322
297429943,0cyclictest3250-21irqbalance10:31:222
297429943,0cyclictest3250-21irqbalance10:21:222
297429943,0cyclictest3250-21irqbalance10:16:222
297429943,0cyclictest3250-21irqbalance09:06:222
297429943,0cyclictest3250-21irqbalance07:44:022
297429943,0cyclictest31551-21awk09:01:322
297429943,0cyclictest27507-21awk07:51:302
297429943,0cyclictest2339-21awk07:56:312
297429943,0cyclictest22690-21awk10:01:322
297429943,0cyclictest13860-21ps09:11:322
297419944,0cyclictest14494-21sensors10:31:391
297419943,0cyclictest9864-21awk12:06:321
297419943,0cyclictest9808-21awk08:46:301
297419943,0cyclictest3571-21lldpd12:16:081
297419943,0cyclictest3571-21lldpd07:58:541
297419943,0cyclictest3524-21snmpd12:01:251
297419943,0cyclictest3524-21snmpd11:01:241
297419943,0cyclictest3524-21snmpd08:34:231
297419943,0cyclictest27633-21awk07:51:301
297419943,0cyclictest25229-21awk11:56:321
297419943,0cyclictest24511-21awk10:21:311
297419943,0cyclictest12218-21sadc09:11:151
297409944,0cyclictest7603-21kworker/0:008:17:130
297409944,0cyclictest7603-21kworker/0:008:12:390
297409944,0cyclictest7603-21kworker/0:007:57:020
297409944,0cyclictest22346-21kworker/0:207:53:020
297409944,0cyclictest22346-21kworker/0:207:36:380
297409944,0cyclictest22346-21kworker/0:207:31:420
297409943,0cyclictest2680-21awk08:41:310
297409943,0cyclictest26774-21sadc11:01:160
297409942,0cyclictest2891-21kworker/0:011:16:110
297409942,0cyclictest25043-21kworker/0:212:02:230
297409941,0cyclictest2891-21kworker/0:011:16:330
297409940,0cyclictest0-21swapper/012:42:140
297409940,0cyclictest0-21swapper/011:23:150
297409940,0cyclictest0-21swapper/009:01:270
259940,0migration/28041-21idleruntime11:46:312
259940,0migration/28041-21idleruntime11:46:312
259940,0migration/26852-21kthreadcore10:46:342
259940,0migration/24119-21munin-node12:41:292
259940,0migration/23272-21kthreadcore07:31:332
259940,0migration/220151-21fschecks_time07:46:292
259940,0migration/217294-21kthreadcore08:26:322
259940,0migration/215965-21ksmtuned09:33:022
259940,0migration/215478-21runrttasks08:48:032
249940,0watchdog/26095-21basename08:21:302
249940,0watchdog/221585-21latency08:06:342
249940,0watchdog/20-21swapper/212:16:352
249940,0watchdog/20-21swapper/208:36:302
249940,0watchdog/20-21swapper/208:31:302
179940,0migration/18177-21if_eth1.211:46:321
179940,0migration/18177-21if_eth1.211:46:321
179940,0migration/16792-21kthreadcore07:36:331
179940,0migration/132517-21kthreadcore10:06:341
179940,0migration/132090-21kthreadcore11:21:351
179940,0migration/132011-21aten_r1power_fr10:26:281
179940,0migration/130963-21idleruntime07:31:291
179940,0migration/127696-21kthreadcore08:56:331
179940,0migration/125676-21kthreadcore08:11:331
179940,0migration/125219-21sh10:41:271
179940,0migration/12490-21kthreadcore12:56:331
179940,0migration/118275-21kthreadcore08:51:321
179940,0migration/11584-21cpuspeed_turbos10:46:281
179940,0migration/111950-21aten_r1power_vo11:11:291
169940,0watchdog/127627-21unixbench_multi12:51:431
169940,0watchdog/126936-21sh09:21:271
169940,0watchdog/126295-21ssh09:42:471
169940,0watchdog/124796-21ssh10:40:591
169940,0watchdog/121586-21latency08:06:341
169940,0watchdog/10-21swapper/112:46:351
169940,0watchdog/10-21swapper/112:39:351
169940,0watchdog/10-21swapper/110:56:311
169940,0watchdog/10-21swapper/109:38:271
169940,0watchdog/10-21swapper/108:21:301
149940,0migration/028229-21kthreadcore08:56:340
149940,0migration/010047-21kthreadcore08:21:330
8305030,0irq/26-0000:00:0-21swapper/307:36:203
329930,0watchdog/30-21swapper/309:26:193
329930,0watchdog/30-21swapper/308:51:183
29805030,0irq/28-eth0-rx-0-21swapper/308:46:273
297429932,0cyclictest9637-21awk08:01:292
297429932,0cyclictest3571-21lldpd08:41:252
297429932,0cyclictest3272-21kernelversion09:26:332
297429932,0cyclictest20426-21tune2fs09:16:292
297429930,0cyclictest30924-21perl08:16:292
297419933,0cyclictest3571-21lldpd11:16:371
297419933,0cyclictest3571-21lldpd08:43:551
297419933,0cyclictest0-21swapper/112:22:101
297419933,0cyclictest0-21swapper/111:51:251
297419932,0cyclictest3571-21lldpd09:51:071
297419932,0cyclictest3571-21lldpd07:50:241
297419932,0cyclictest2846-21awk09:26:321
297419932,0cyclictest25883-21sensors09:16:381
297419932,0cyclictest13546-21irqcore08:26:311
297419932,0cyclictest12456-21sed07:41:281
297419931,0cyclictest1037-21kthreadcore09:01:331
297419930,0cyclictest5864-21perl11:26:281
297419930,0cyclictest30894-21perl08:16:291
297419930,0cyclictest13676-21perl09:56:281
297419930,0cyclictest13192-21perl09:11:291
297409933,0cyclictest9768-21kworker/0:012:07:190
297409933,0cyclictest2891-21kworker/0:011:56:170
297409933,0cyclictest2891-21kworker/0:011:26:170
297409933,0cyclictest22346-21kworker/0:207:46:180
297409933,0cyclictest1410-21kworker/0:209:41:230
297409933,0cyclictest1410-21kworker/0:209:26:210
297409932,0cyclictest24306-21grep10:21:290
297409930,0cyclictest26676-21perl12:16:310
297409930,0cyclictest17121-21diskstats10:36:290
259930,0migration/24756-21latency_hist07:36:152
169930,0watchdog/10-21swapper/112:31:271
169930,0watchdog/10-21swapper/108:36:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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