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2026-04-28 - 19:31
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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 Tue Apr 28, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
609529493,0sleep00-21swapper/007:19:200
593725655,0sleep10-21swapper/107:17:371
6348995353,0cyclictest2689-21md0_resync08:45:381
6349994747,0cyclictest2688-21md1_resync08:45:382
616224132,0sleep20-21swapper/207:20:022
3151723927,0sleep30-21swapper/307:16:233
6347993535,0cyclictest5517-21kworker/0:008:45:380
329970,0watchdog/319341-21processes10:11:443
8305060,0irq/26-0000:00:7345-21perl07:21:373
8305060,0irq/26-0000:00:26123-21munin-node08:36:433
8305060,0irq/26-0000:00:25695-21irqstats09:01:393
8305060,0irq/26-0000:00:2017-21ls08:46:213
8305060,0irq/26-0000:00:18578-21grep09:16:403
8305060,0irq/26-0000:00:14200-21ntp_offset08:06:413
8305060,0irq/26-0000:00:13071-21grep08:51:373
8305060,0irq/26-0000:00:11538-21cat08:26:463
63489960,0cyclictest0-21swapper/110:01:321
63489960,0cyclictest0-21swapper/107:38:141
63479966,0cyclictest0-21swapper/008:01:400
63479966,0cyclictest0-21swapper/007:46:030
63479964,0cyclictest30267-21kthreadcore10:01:380
339960,0migration/35160-21sh10:22:173
339960,0migration/34398-21runrttasks12:11:593
339960,0migration/331299-21timerwakeupswit09:41:483
339960,0migration/328663-21sh11:13:053
339960,0migration/328035-21sh09:22:063
339960,0migration/315441-21munin-node12:36:463
29805060,0irq/28-eth0-rx-31001-21yum11:31:503
29805060,0irq/28-eth0-rx-18488-21perl12:41:363
29805060,0irq/28-eth0-rx-0-21swapper/310:34:083
149960,0migration/07336-21fschecks_time09:31:340
149960,0migration/0474-21kthreadcore10:21:400
8305050,0irq/26-0000:00:826-21kthreadcore07:36:393
8305050,0irq/26-0000:00:7900-21irqcore09:11:373
8305050,0irq/26-0000:00:28049-21gltestperf08:41:343
8305050,0irq/26-0000:00:24233-21irqrtprio08:16:383
8305050,0irq/26-0000:00:21621-21df07:31:333
8305050,0irq/26-0000:00:0-21swapper/308:56:473
8305050,0irq/26-0000:00:0-21swapper/308:21:333
8305050,0irq/26-0000:00:0-21swapper/307:41:533
8305050,0irq/26-0000:00:0-21swapper/211:26:562
63499950,0cyclictest0-21swapper/211:33:332
63489955,0cyclictest0-21swapper/112:23:071
63489955,0cyclictest0-21swapper/107:45:291
63489950,0cyclictest0-21swapper/112:12:241
63489950,0cyclictest0-21swapper/111:41:301
63489950,0cyclictest0-21swapper/110:29:171
63479955,0cyclictest0-21swapper/008:23:340
63479950,0cyclictest24159-21munin-node09:01:350
4150,0ktimersoftd/00-21swapper/007:57:520
35150,0ktimersoftd/30-21swapper/307:57:523
339950,0migration/39952-21diskmemload11:56:453
339950,0migration/37527-21diskmemload09:46:413
339950,0migration/37519-21kthreadcore11:01:403
339950,0migration/36738-21kthreadcore10:06:373
339950,0migration/328502-21kthreadcore12:46:403
339950,0migration/32505-21kthreadcore11:36:373
339950,0migration/320940-21kthreadcore11:46:413
339950,0migration/320255-21sendmail_mailqu07:26:403
339950,0migration/318259-21latency12:01:393
339950,0migration/316528-21kthreadcore11:06:403
339950,0migration/314471-21kthreadcore07:46:403
339950,0migration/314349-21taskset09:33:573
339950,0migration/314031-21kernelversion08:31:383
339950,0migration/313765-21taskset12:18:363
329950,0watchdog/35108-21ssh11:18:003
329950,0watchdog/332464-21head09:06:363
329950,0watchdog/324514-21tune2fs12:26:323
29815050,0irq/29-eth0-tx-29781-21munin-node12:11:432
29815050,0irq/29-eth0-tx-16859-21iostat_ios09:36:372
29815050,0irq/29-eth0-tx-0-21swapper/009:21:350
29815050,0irq/29-eth0-tx-0-21swapper/008:56:410
29815050,0irq/29-eth0-tx-0-21swapper/008:28:190
29815050,0irq/29-eth0-tx-0-21swapper/008:16:340
29815050,0irq/29-eth0-tx-0-21swapper/007:51:460
29815050,0irq/29-eth0-tx-0-21swapper/007:31:410
29815050,0irq/29-eth0-tx-0-21swapper/007:23:080
29805050,0irq/28-eth0-rx-21443-21mdstat11:26:413
29805050,0irq/28-eth0-rx-20956-21ssh12:06:283
29805050,0irq/28-eth0-rx-17235-21kthreadcore09:36:383
29805050,0irq/28-eth0-rx-16271-21irqcore12:21:373
29805050,0irq/28-eth0-rx-10974-21kernelversion11:41:393
29805050,0irq/28-eth0-rx-10481-21runrttasks09:51:353
29805050,0irq/28-eth0-rx-1009-21needreboot10:56:423
29805050,0irq/28-eth0-rx-0-21swapper/311:53:453
29805050,0irq/28-eth0-rx-0-21swapper/311:21:333
29805050,0irq/28-eth0-rx-0-21swapper/310:51:383
29805050,0irq/28-eth0-rx-0-21swapper/310:39:083
29805050,0irq/28-eth0-rx-0-21swapper/310:26:343
29805050,0irq/28-eth0-rx-0-21swapper/310:16:553
29805050,0irq/28-eth0-rx-0-21swapper/310:01:493
29805050,0irq/28-eth0-rx-0-21swapper/309:27:373
29805050,0irq/28-eth0-rx-0-21swapper/307:51:373
19150,0ktimersoftd/10-21swapper/110:35:541
179950,0migration/131291-21sh12:28:431
179950,0migration/126428-21kthreadcore11:11:381
179950,0migration/12481-21df_abs08:46:341
179950,0migration/11705-21munin-node11:36:361
179950,0migration/110698-21sh10:06:451
169950,0watchdog/19636-21cut12:16:401
169950,0watchdog/126454-21grep08:36:481
169950,0watchdog/115618-21grep10:11:401
169950,0watchdog/112646-21kthreadcore09:51:401
149950,0migration/0871-21kthreadcore12:11:410
149950,0migration/08185-21taskset11:38:490
149950,0migration/0726-21fschecks_time12:31:350
149950,0migration/06151-21kthreadcore08:46:390
149950,0migration/05597-21kthreadcore09:46:390
149950,0migration/030767-21timerandwakeup11:31:480
149950,0migration/029817-21kthreadcore09:41:410
149950,0migration/027383-21kthreadcore10:16:410
149950,0migration/026998-21idleruntime-cro10:56:210
149950,0migration/026245-21sh09:58:080
149950,0migration/025722-21sh12:45:060
149950,0migration/023331-21sh10:33:560
149950,0migration/021008-21kthreadcore08:11:400
149950,0migration/020507-21kthreadcore09:36:380
149950,0migration/019969-21kthreadcore12:21:380
149950,0migration/017803-21taskset07:47:520
149950,0migration/015624-21netstat11:41:410
149950,0migration/014774-21sh10:29:290
149950,0migration/014144-21diskmemload10:11:380
149950,0migration/012861-21fschecks_count12:01:340
149950,0migration/012629-21kthreadcore12:36:390
149950,0migration/010839-21kthreadcore11:21:390
149950,0migration/010494-21proc_pri10:06:410
8305040,0irq/26-0000:00:31390-21ssh10:37:012
8305040,0irq/26-0000:00:18547-21ssh10:51:322
8305040,0irq/26-0000:00:0-21swapper/212:41:412
8305040,0irq/26-0000:00:0-21swapper/211:36:382
8305040,0irq/26-0000:00:0-21swapper/211:16:412
8305040,0irq/26-0000:00:0-21swapper/210:56:392
8305040,0irq/26-0000:00:0-21swapper/210:01:392
8305040,0irq/26-0000:00:0-21swapper/209:56:452
8305040,0irq/26-0000:00:0-21swapper/209:51:352
8305040,0irq/26-0000:00:0-21swapper/209:45:152
63499944,0cyclictest0-21swapper/207:57:522
63499943,0cyclictest7724-21awk09:31:362
63499943,0cyclictest7386-21awk12:16:382
63499943,0cyclictest3571-21lldpd10:35:562
63499943,0cyclictest3571-21lldpd09:16:552
63499943,0cyclictest3571-21lldpd09:03:252
63499943,0cyclictest3571-21lldpd08:13:252
63499943,0cyclictest3571-21lldpd07:49:542
63499943,0cyclictest3524-21snmpd09:07:322
63499943,0cyclictest3524-21snmpd08:03:162
63499943,0cyclictest3250-21irqbalance08:57:072
63499943,0cyclictest22486-21awk11:11:362
63499943,0cyclictest22357-21awk09:21:362
63499943,0cyclictest16119-21awk12:21:362
63499943,0cyclictest12644-21sadc10:11:202
63499943,0cyclictest10057-21awk12:36:372
63499942,0cyclictest7784-21python09:46:452
63499942,0cyclictest27071-21tr10:16:412
63499941,0cyclictest0-21swapper/212:06:332
63499940,0cyclictest10952-21munin-node10:46:382
63489944,0cyclictest0-21swapper/112:03:151
63489944,0cyclictest0-21swapper/111:51:261
63489943,0cyclictest3571-21lldpd11:56:561
63489943,0cyclictest3571-21lldpd11:06:261
63489943,0cyclictest3571-21lldpd11:01:251
63489943,0cyclictest3571-21lldpd10:43:561
63489943,0cyclictest3571-21lldpd10:17:561
63489943,0cyclictest3571-21lldpd10:00:251
63489943,0cyclictest3571-21lldpd09:13:251
63489943,0cyclictest3571-21lldpd08:07:551
63489943,0cyclictest31065-21awk09:26:361
63489943,0cyclictest2327-21awk09:46:371
63489943,0cyclictest22212-21awk09:21:351
63489943,0cyclictest19567-21awk10:51:351
63489943,0cyclictest19148-21grep11:46:371
63489943,0cyclictest18781-21awk12:41:391
63489943,0cyclictest16782-21awk09:36:361
63489940,0cyclictest0-21swapper/108:27:251
63479944,0cyclictest0-21swapper/010:41:310
63479944,0cyclictest0-21swapper/008:54:280
63479942,0cyclictest22132-21awk12:06:370
329940,0watchdog/32689-21md0_resync12:34:483
329940,0watchdog/320765-21cut08:11:393
329940,0watchdog/313987-21cut10:46:403
329940,0watchdog/30-21swapper/310:41:403
29815040,0irq/29-eth0-tx-30011-21ssh09:26:322
29815040,0irq/29-eth0-tx-2028-21md1_raid107:36:390
29815040,0irq/29-eth0-tx-1847-21ssh12:49:332
29815040,0irq/29-eth0-tx-18148-21ssh11:46:252
29815040,0irq/29-eth0-tx-12898-21ssh12:01:342
29815040,0irq/29-eth0-tx-0-21swapper/211:57:212
29815040,0irq/29-eth0-tx-0-21swapper/211:51:462
29815040,0irq/29-eth0-tx-0-21swapper/211:42:262
29815040,0irq/29-eth0-tx-0-21swapper/211:07:202
29815040,0irq/29-eth0-tx-0-21swapper/210:44:222
29815040,0irq/29-eth0-tx-0-21swapper/210:26:442
29815040,0irq/29-eth0-tx-0-21swapper/210:11:502
29805040,0irq/28-eth0-rx-0-21swapper/309:58:283
29805040,0irq/28-eth0-rx-0-21swapper/308:01:403
259940,0migration/2933-21kthreadcore07:36:392
259940,0migration/27737-21munin-node11:21:362
259940,0migration/26530-21latency_hist07:21:202
259940,0migration/25875-21kthreadcore11:01:402
259940,0migration/25802-21kthreadcore12:31:402
259940,0migration/231045-21fschecks_count10:21:352
259940,0migration/230589-21fschecks_count08:21:332
259940,0migration/224318-21fschecks_count12:26:322
259940,0migration/222990-21kthreadcore07:31:382
259940,0migration/222889-21kthreadcore07:51:382
179940,0migration/18946-21kthreadcore07:21:401
179940,0migration/131331-21if_eth1.311:16:381
179940,0migration/128333-21kthreadcore11:31:401
179940,0migration/128112-21runrttasks07:33:131
179940,0migration/126478-21aten_r1power_cu12:46:331
179940,0migration/124780-21timerandwakeup07:51:461
179940,0migration/124260-21kthreadcore12:06:391
179940,0migration/115455-21irqrtprio07:26:351
179940,0migration/11350-21kthreadcore10:21:401
179940,0migration/113425-21gltestperf08:31:351
179940,0migration/113115-21switchtime11:21:461
169940,0watchdog/117905-21cut11:26:401
169940,0watchdog/116644-21ssh12:39:161
169940,0watchdog/111884-21perl07:46:351
169940,0watchdog/10-21swapper/112:33:441
169940,0watchdog/10-21swapper/109:16:401
169940,0watchdog/10-21swapper/109:06:401
169940,0watchdog/10-21swapper/108:56:401
169940,0watchdog/10-21swapper/107:56:391
149940,0migration/06721-21kthreadcore11:01:400
149940,0migration/05730-21sh09:29:510
149940,0migration/02535-21idleruntime-cro12:51:220
149940,0migration/024322-21kthreadcore11:11:380
149940,0migration/021077-21kthreadcore11:26:410
149940,0migration/016096-21kthreadcore07:26:350
149940,0migration/015182-21kthreadcore11:06:390
149940,0migration/015007-3199-raid-check08:09:240
149940,0migration/013041-21kthreadcore10:46:400
149940,0migration/012223-21kthreadcore09:11:390
149940,0migration/010371-21sh11:56:580
63499932,0cyclictest8814-21fschecks_time08:06:342
63499932,0cyclictest6973-21cut09:11:342
63499932,0cyclictest6095-21tail08:26:342
63499932,0cyclictest4304-21cut07:41:352
63499932,0cyclictest2986-21fschecks_time08:46:352
63499932,0cyclictest22668-21wc08:16:212
63499932,0cyclictest20869-21awk08:36:362
63499932,0cyclictest13906-21latency_hist07:26:202
63499932,0cyclictest10628-21awk08:51:352
63499930,0cyclictest12905-21df_inode08:31:342
63489933,0cyclictest3571-21lldpd10:46:261
63489933,0cyclictest3571-21lldpd08:21:251
63489932,0cyclictest3571-21lldpd08:53:551
63489932,0cyclictest3571-21lldpd08:02:551
63489932,0cyclictest23862-21awk08:16:371
63489932,0cyclictest15862-21forks08:11:341
63489930,0cyclictest29285-21kthreadcore10:56:391
63489930,0cyclictest24932-21diskstats10:36:331
63479933,0cyclictest20148-21kworker/0:111:16:320
63479933,0cyclictest20148-21kworker/0:110:56:240
63479933,0cyclictest20148-21kworker/0:110:36:320
63479932,0cyclictest28194-21awk11:51:380
63479932,0cyclictest21390-21kthreadcore08:36:380
63479932,0cyclictest19157-21cut11:46:370
63479932,0cyclictest16142-21cut08:31:390
63479932,0cyclictest14935-21awk09:16:370
63479931,0cyclictest41ktimersoftd/009:51:350
63479930,0cyclictest6730-21diskstats12:16:350
63479930,0cyclictest25340-21irqstats12:26:360
169930,0watchdog/10-21swapper/109:41:241
169930,0watchdog/10-21swapper/109:31:361
169930,0watchdog/10-21swapper/109:01:281
63479920,0cyclictest0-21swapper/009:06:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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