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2026-04-06 - 20:36
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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 rack1slot2.osadl.org (updated Mon Apr 06, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2219723829,0sleep10-21swapper/107:19:251
2213923826,0sleep20-21swapper/207:18:462
2186223727,0sleep30-21swapper/307:15:353
2181123624,0sleep00-21swapper/007:15:000
22279992121,0cyclictest0-21swapper/209:20:392
339960,0migration/35540-21munin-node07:29:453
339960,0migration/330449-21sh12:06:033
339960,0migration/310989-21munin-node12:34:463
29815060,0irq/29-eth0-tx-12036-21munin-node08:19:430
29815060,0irq/29-eth0-tx-0-21swapper/210:17:482
29805060,0irq/28-eth0-rx-16294-21ntpq09:24:513
29805060,0irq/28-eth0-rx-15132-21sh11:59:443
27160,0ktimersoftd/20-21swapper/209:33:012
259960,0migration/228580-21sh11:47:142
222779965,0cyclictest0-21swapper/011:24:530
149960,0migration/07158-21sh12:12:000
149960,0migration/03732-21missed_timers08:54:510
149960,0migration/032694-21sh12:26:060
149960,0migration/031956-21sh10:12:440
149960,0migration/018159-21sh09:27:570
149960,0migration/014032-21missed_timers10:59:520
8305050,0irq/26-0000:00:18781-21munin-run07:39:313
339950,0migration/39722-21fschecks_count10:19:453
339950,0migration/35818-21kthreadcore07:49:493
339950,0migration/332643-21kthreadcore08:09:493
339950,0migration/332315-21kthreadcore07:24:483
339950,0migration/330540-21fschecks_time11:49:453
339950,0migration/329937-21kthreadcore11:09:503
339950,0migration/326950-21kthreadcore08:04:483
339950,0migration/326163-21fschecks_count12:24:473
339950,0migration/325959-21sh07:44:323
339950,0migration/324788-21kthreadcore09:29:503
339950,0migration/323033-21diskmemload10:49:373
339950,0migration/322449-21taskset08:46:193
339950,0migration/319703-21kthreadcore11:04:503
339950,0migration/31903-21taskset11:30:163
339950,0migration/31454-21munin-node09:19:413
339950,0migration/313312-21kthreadcore08:39:493
329950,0watchdog/38657-21ssh12:30:033
329950,0watchdog/34069-21python08:54:543
329950,0watchdog/330518-21idleruntime10:34:473
329950,0watchdog/328953-21kthreadcore10:09:513
329950,0watchdog/320891-21sh10:29:433
329950,0watchdog/317666-21ssh11:21:513
329950,0watchdog/312213-21kthreadcore10:59:513
329950,0watchdog/30-21swapper/310:54:513
329950,0watchdog/30-21swapper/310:39:433
29815050,0irq/29-eth0-tx-8057-21if_err_eth1.209:59:472
29815050,0irq/29-eth0-tx-6871-21perl11:54:462
29815050,0irq/29-eth0-tx-4958-21diskstats09:39:442
29815050,0irq/29-eth0-tx-4950-21ssh11:52:202
29815050,0irq/29-eth0-tx-27790-21kthreadcore10:49:502
29815050,0irq/29-eth0-tx-24557-21ssh12:22:242
29815050,0irq/29-eth0-tx-18918-21munin-node11:24:462
29815050,0irq/29-eth0-tx-16152-21ssh10:20:382
29815050,0irq/29-eth0-tx-11105-21ssh11:36:372
29815050,0irq/29-eth0-tx-0-21swapper/209:51:492
29815050,0irq/29-eth0-tx-0-21swapper/209:24:442
29815050,0irq/29-eth0-tx-0-21swapper/008:59:440
29815050,0irq/29-eth0-tx-0-21swapper/008:29:460
29815050,0irq/29-eth0-tx-0-21swapper/008:29:270
29805050,0irq/28-eth0-rx-9498-21grep11:54:503
29805050,0irq/28-eth0-rx-6530-21ssh12:10:193
29805050,0irq/28-eth0-rx-32406-21python07:44:553
29805050,0irq/28-eth0-rx-29937-21kthreadcore08:29:493
29805050,0irq/28-eth0-rx-28692-21fschecks_count09:34:463
29805050,0irq/28-eth0-rx-24830-21ssh12:23:093
29805050,0irq/28-eth0-rx-22485-21diskstats09:49:423
29805050,0irq/28-eth0-rx-19260-21latency09:44:503
29805050,0irq/28-eth0-rx-15541-21ssh10:04:333
29805050,0irq/28-eth0-rx-14037-21kthreadcore11:39:503
29805050,0irq/28-eth0-rx-0-21swapper/312:44:363
29805050,0irq/28-eth0-rx-0-21swapper/312:41:013
29805050,0irq/28-eth0-rx-0-21swapper/312:18:473
29805050,0irq/28-eth0-rx-0-21swapper/311:47:063
29805050,0irq/28-eth0-rx-0-21swapper/311:25:473
29805050,0irq/28-eth0-rx-0-21swapper/311:19:323
29805050,0irq/28-eth0-rx-0-21swapper/310:25:133
29805050,0irq/28-eth0-rx-0-21swapper/310:01:033
29805050,0irq/28-eth0-rx-0-21swapper/309:39:493
29805050,0irq/28-eth0-rx-0-21swapper/309:04:503
29805050,0irq/28-eth0-rx-0-21swapper/308:59:503
259950,0migration/26975-21kthreadcore08:34:502
259950,0migration/26867-21kthreadcore07:49:502
259950,0migration/2661-21sh11:12:592
259950,0migration/231418-21kernelversion08:09:482
259950,0migration/229611-21aten_r1power_po10:34:442
259950,0migration/22680-21kthreadcore09:54:502
259950,0migration/225970-21kthreadcore12:04:512
259950,0migration/220865-21aten_r1power_en10:29:432
259950,0migration/217967-21kthreadcore10:04:492
259950,0migration/216476-21sh12:18:572
259950,0migration/215738-21idleruntime11:59:462
259950,0migration/215042-21unixbench_singl08:39:572
249950,0watchdog/227786-21kthreadcore10:09:512
249950,0watchdog/226535-21grep12:24:472
249950,0watchdog/216975-21users11:19:592
222799955,0cyclictest0-21swapper/209:38:512
222799950,0cyclictest0-21swapper/212:30:522
222799950,0cyclictest0-21swapper/210:55:292
222799950,0cyclictest0-21swapper/207:44:052
222789955,0cyclictest0-21swapper/109:24:461
222789955,0cyclictest0-21swapper/107:29:501
222789950,0cyclictest0-21swapper/111:38:371
222779955,0cyclictest1198-21diskmemload12:23:130
222779955,0cyclictest0-21swapper/009:57:230
222779950,0cyclictest1198-21diskmemload10:25:270
222779950,0cyclictest0-21swapper/012:40:150
222779950,0cyclictest0-21swapper/012:01:560
179950,0migration/13712-21sh11:49:551
179950,0migration/126588-21kthreadcore10:49:501
179950,0migration/116097-21kthreadcore10:44:491
179950,0migration/115752-21cpuspeed_turbos07:59:441
179950,0migration/115752-21cpuspeed_turbos07:59:441
179950,0migration/111012-21timerandwakeup09:39:561
149950,0migration/09283-21kthreadcore09:39:490
149950,0migration/07858-21latency_hist10:59:320
149950,0migration/07191-21kthreadcore09:19:480
149950,0migration/06007-21munin-node08:14:490
149950,0migration/05779-21kthreadcore11:14:500
149950,0migration/05118-21kthreadcore07:49:490
149950,0migration/04694-21kthreadcore08:34:490
149950,0migration/04287-21sh10:36:080
149950,0migration/03776-21sh08:09:540
149950,0migration/032092-21missed_timers07:44:500
149950,0migration/030653-21taskset12:06:370
149950,0migration/029767-21sh09:52:480
149950,0migration/027545-21kthreadcore11:09:490
149950,0migration/026253-21taskset09:12:380
149950,0migration/02579-21kthreadcore10:14:490
149950,0migration/025248-21munin-node09:29:520
149950,0migration/023441-21gltestperf07:19:440
149950,0migration/022087-21kthreadcore11:04:510
149950,0migration/016597-21munin-node11:19:550
149950,0migration/015529-21kthreadcore12:34:510
149950,0migration/011540-21kthreadcore11:54:510
149950,0migration/010312-21kthreadcore08:39:480
339940,0migration/37059-21kthreadcore08:34:503
339940,0migration/34537-21fschecks_time11:34:463
339940,0migration/326208-21kthreadcore07:19:483
339940,0migration/325674-21unixbench-2d08:24:563
339940,0migration/31467-21kthreadcore09:54:493
329940,0watchdog/3842-40yum-updatesd-he09:15:553
329940,0watchdog/30-21swapper/308:49:463
329940,0watchdog/30-21swapper/308:14:503
29815040,0irq/29-eth0-tx-8347-21ssh10:39:492
29815040,0irq/29-eth0-tx-6511-21ssh12:10:172
29815040,0irq/29-eth0-tx-1198-21diskmemload12:39:392
29815040,0irq/29-eth0-tx-0-21swapper/211:29:482
29815040,0irq/29-eth0-tx-0-21swapper/210:59:342
29815040,0irq/29-eth0-tx-0-21swapper/210:45:542
29815040,0irq/29-eth0-tx-0-21swapper/210:25:072
29815040,0irq/29-eth0-tx-0-21swapper/209:44:462
29805040,0irq/28-eth0-rx-0-21swapper/310:45:033
29805040,0irq/28-eth0-rx-0-21swapper/310:14:473
29805040,0irq/28-eth0-rx-0-21swapper/307:59:493
29805040,0irq/28-eth0-rx-0-21swapper/307:59:493
259940,0migration/24463-21runrttasks08:55:262
259940,0migration/23662-21timerandwakeup07:24:562
259940,0migration/223501-21idleruntime07:19:462
259940,0migration/221754-21ntp_offset08:44:512
259940,0migration/214088-21kthreadcore09:04:502
249940,0watchdog/212438-21ssh11:39:432
249940,0watchdog/20-21swapper/211:14:512
249940,0watchdog/20-21swapper/211:04:552
222799944,0cyclictest305350irq/27-eth108:06:392
222799944,0cyclictest0-21swapper/208:49:592
222799943,0cyclictest5859-21awk08:14:472
222799943,0cyclictest5627-21awk07:29:462
222799943,0cyclictest3571-21lldpd12:44:342
222799943,0cyclictest3524-21snmpd09:02:492
222799943,0cyclictest3524-21snmpd08:31:042
222799943,0cyclictest3524-21snmpd07:55:332
222799943,0cyclictest3524-21snmpd07:49:032
222799943,0cyclictest3524-21snmpd07:34:482
222799943,0cyclictest16524-21awk07:59:462
222799943,0cyclictest16524-21awk07:59:462
222799943,0cyclictest13189-21awk08:19:462
222799940,0cyclictest11919-21irqcore12:34:502
222789944,0cyclictest0-21swapper/112:20:141
222789944,0cyclictest0-21swapper/109:22:341
222789943,0cyclictest9188-21awk10:59:481
222789943,0cyclictest3571-21lldpd12:15:031
222789943,0cyclictest3571-21lldpd10:19:011
222789943,0cyclictest3571-21lldpd09:11:271
222789943,0cyclictest3571-21lldpd07:53:271
222789943,0cyclictest3571-21lldpd07:43:571
222789943,0cyclictest3571-21lldpd07:21:571
222789943,0cyclictest3524-21snmpd12:40:511
222789943,0cyclictest3524-21snmpd10:25:351
222789943,0cyclictest3250-21irqbalance11:57:391
222789943,0cyclictest28954-21awk12:44:491
222789943,0cyclictest24550-21awk12:04:491
222789943,0cyclictest16815-21awk08:44:461
222789943,0cyclictest13437-21awk09:04:481
222779944,0cyclictest0-21swapper/010:05:160
222779944,0cyclictest0-21swapper/009:37:030
222779943,0cyclictest9424-21awk12:14:480
222779943,0cyclictest8039-21awk09:59:470
222779943,0cyclictest3571-21lldpd10:33:310
222779943,0cyclictest3524-21snmpd12:45:510
222779943,0cyclictest3524-21snmpd07:33:030
222779943,0cyclictest21782-21crond09:49:310
222779943,0cyclictest13492-21awk11:39:470
179940,0migration/19403-21kthreadcore08:14:501
179940,0migration/17313-21kthreadcore12:29:511
179940,0migration/15321-21kthreadcore11:14:501
179940,0migration/14333-21kthreadcore12:09:501
179940,0migration/132521-21kthreadcore07:24:481
179940,0migration/131489-21kthreadcore08:09:481
179940,0migration/130370-21fschecks_time10:34:461
179940,0migration/127266-21fschecks_count09:14:461
179940,0migration/125935-21kthreadcore08:04:481
179940,0migration/124877-21kthreadcore09:49:461
179940,0migration/124145-21ksmtuned11:07:071
179940,0migration/122514-21kthreadcore10:29:481
179940,0migration/120579-21irqrtprio09:29:481
179940,0migration/119931-21fschecks_time08:24:451
179940,0migration/119682-21fschecks_time11:24:451
179940,0migration/115173-21taskset07:58:411
179940,0migration/114409-21missed_timers08:39:501
179940,0migration/113837-21kthreadcore12:34:511
179940,0migration/110841-21kthreadcore09:59:501
169940,0watchdog/15186-21munin-node08:59:431
169940,0watchdog/1429-21awk10:54:511
169940,0watchdog/129020-21sh09:34:471
169940,0watchdog/126534-21grep12:24:471
169940,0watchdog/115477-21cut11:19:511
169940,0watchdog/10-21swapper/110:19:431
169940,0watchdog/10-21swapper/110:09:511
169940,0watchdog/10-21swapper/110:04:471
169940,0watchdog/10-21swapper/109:46:151
149940,0migration/026424-21kthreadcore11:44:500
149940,0migration/01606-21timerwakeupswit11:29:570
8305030,0irq/26-0000:00:0-21swapper/307:55:023
8305030,0irq/26-0000:00:0-21swapper/209:14:372
329930,0watchdog/30-21swapper/309:09:433
29815030,0irq/29-eth0-tx-0-21swapper/008:49:550
29815030,0irq/29-eth0-tx-0-21swapper/007:39:500
29805030,0irq/28-eth0-rx-0-21swapper/308:21:293
222799932,0cyclictest3524-21snmpd08:24:482
222799932,0cyclictest21630-21grep09:09:472
222789933,0cyclictest0-21swapper/109:55:211
222789932,0cyclictest3571-21lldpd08:22:281
222789932,0cyclictest27296-21awk07:44:461
222789932,0cyclictest26369-21awk11:09:471
222789932,0cyclictest15760-21awk11:59:461
222789932,0cyclictest12843-21awk07:34:471
222789930,0cyclictest30582-21diskstats08:54:451
222779932,0cyclictest9097-21tune2fs07:54:450
222779932,0cyclictest4872-21awk11:34:480
222779932,0cyclictest429-21sed09:14:570
222779932,0cyclictest3524-21snmpd09:07:170
222779932,0cyclictest30884-21awk07:24:470
222779932,0cyclictest30751-21awk11:49:460
222779932,0cyclictest2951-21awk12:29:480
222779932,0cyclictest20755-21sensors10:44:540
222779932,0cyclictest12797-21awk07:34:460
222779932,0cyclictest10321-21awk10:19:470
222779930,0cyclictest21706-21python07:59:550
222779930,0cyclictest21706-21python07:59:550
222779930,0cyclictest11396-21grep10:39:500
222779930,0cyclictest0-21swapper/008:04:540
179930,0migration/14903-21kthreadcore08:34:491
179930,0migration/112947-21fschecks_count11:39:461
169930,0watchdog/127508-21if_err_eth1.308:29:461
169930,0watchdog/123999-21munin-node08:49:461
169930,0watchdog/10-21swapper/111:44:511
169930,0watchdog/10-21swapper/111:31:151
169930,0watchdog/10-21swapper/110:39:431
149930,0migration/023067-21sh10:49:420
222779920,0cyclictest16131-21diskstats08:44:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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