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2026-01-10 - 19:30
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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 Sat Jan 10, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2733824939,0sleep30-21swapper/307:12:003
2705024435,0sleep10-21swapper/107:08:331
2699623727,0sleep20-21swapper/207:07:582
2711723524,0sleep00-21swapper/007:09:240
274439976,0cyclictest28148-21kthreadcore09:02:420
339960,0migration/330788-21sh11:37:333
339960,0migration/329863-21sh10:20:433
339960,0migration/328431-21latency_hist10:02:243
339960,0migration/321774-21munin-node10:32:453
339960,0migration/317059-21sh10:51:073
339960,0migration/312546-21munin-node11:07:403
29805060,0irq/28-eth0-rx-30594-21munin-node09:22:473
29805060,0irq/28-eth0-rx-17773-21timerandwakeup12:22:493
274489960,0cyclictest5349-21processes08:22:452
274449965,0cyclictest12748-21ps10:47:421
274449960,0cyclictest0-21swapper/111:12:361
149960,0migration/03324-21sh12:34:110
149960,0migration/030742-21sh09:23:100
149960,0migration/022292-21kthreadcore09:57:400
149960,0migration/016325-21sh10:49:010
149960,0migration/011704-21kthreadcore10:27:410
339950,0migration/36679-21cpuspeed_turbos08:27:363
339950,0migration/34655-21latency_hist12:37:243
339950,0migration/34604-21kthreadcore07:37:423
339950,0migration/34431-21kthreadcore11:02:423
339950,0migration/327010-21munin-node08:37:443
339950,0migration/326033-21kthreadcore11:52:413
339950,0migration/325760-21munin-node09:02:403
339950,0migration/325007-21kthreadcore11:32:423
339950,0migration/32454-21taskset08:45:223
339950,0migration/32025-21munin-node12:32:453
339950,0migration/317176-21aten_r1power_cu08:12:333
339950,0migration/316796-21kthreadcore09:17:423
339950,0migration/316564-21taskset07:26:013
339950,0migration/316375-21sendmail_mailqu08:52:443
329950,0watchdog/38777-21memory09:47:433
329950,0watchdog/38147-21ls11:42:393
329950,0watchdog/36314-21runrttasks10:53:553
329950,0watchdog/36314-21runrttasks10:53:553
329950,0watchdog/3338-21python10:57:473
329950,0watchdog/33005-21basename08:47:353
329950,0watchdog/326854-21df09:42:353
329950,0watchdog/31410-21ssh12:14:513
29815050,0irq/29-eth0-tx-6651-21ssh09:12:240
29815050,0irq/29-eth0-tx-0-21swapper/008:32:380
29805050,0irq/28-eth0-rx-21073-21diskstats07:52:363
29805050,0irq/28-eth0-rx-1346-21grep10:02:453
29805050,0irq/28-eth0-rx-1285-21tune2fs11:57:383
29805050,0irq/28-eth0-rx-0-21swapper/312:29:023
29805050,0irq/28-eth0-rx-0-21swapper/312:18:143
29805050,0irq/28-eth0-rx-0-21swapper/311:17:353
29805050,0irq/28-eth0-rx-0-21swapper/310:45:453
29805050,0irq/28-eth0-rx-0-21swapper/310:38:263
29805050,0irq/28-eth0-rx-0-21swapper/310:30:533
29805050,0irq/28-eth0-rx-0-21swapper/310:14:333
29805050,0irq/28-eth0-rx-0-21swapper/309:52:393
29805050,0irq/28-eth0-rx-0-21swapper/309:38:163
29805050,0irq/28-eth0-rx-0-21swapper/309:33:033
29805050,0irq/28-eth0-rx-0-21swapper/309:27:363
29805050,0irq/28-eth0-rx-0-21swapper/307:57:413
274489950,0cyclictest0-21swapper/212:14:492
274489950,0cyclictest0-21swapper/209:16:212
274449955,0cyclictest0-21swapper/111:49:291
274449955,0cyclictest0-21swapper/109:42:541
274449955,0cyclictest0-21swapper/109:17:021
274449954,0cyclictest6047-21awk11:22:391
274449950,0cyclictest0-21swapper/111:01:531
274449950,0cyclictest0-21swapper/109:28:421
274439950,0cyclictest0-21swapper/009:34:140
19150,0ktimersoftd/10-21swapper/111:21:261
179950,0migration/19978-21munin-node08:07:341
179950,0migration/17230-21unixbench_singl10:42:511
179950,0migration/16458-21kthreadcore11:57:431
179950,0migration/130575-21sh09:22:471
179950,0migration/127400-21taskset07:55:141
179950,0migration/121844-21sh09:17:581
169950,0watchdog/120397-21kthreadcore10:32:431
169950,0watchdog/117377-21tr08:12:351
169950,0watchdog/114269-21fschecks_time08:32:391
169950,0watchdog/10-21swapper/107:32:421
149950,0migration/07839-21kthreadcore12:17:430
149950,0migration/0675-21munin-node10:57:500
149950,0migration/06499-21irqrtprio10:07:400
149950,0migration/03958-21interrupts11:02:410
149950,0migration/031972-21fschecks_count07:37:370
149950,0migration/029429-21kthreadcore07:57:400
149950,0migration/029152-21kthreadcore09:42:400
149950,0migration/027705-21kthreadcore08:17:410
149950,0migration/027328-21unixbench_multi08:37:480
149950,0migration/025926-21kthreadcore10:17:410
149950,0migration/025908-21latency11:12:420
149950,0migration/02416-21kthreadcore09:27:420
149950,0migration/022842-21kthreadcore10:52:420
149950,0migration/022842-21kthreadcore10:52:420
149950,0migration/021336-21kthreadcore08:12:400
149950,0migration/020753-21taskset10:14:180
149950,0migration/020394-21kthreadcore08:57:400
149950,0migration/019885-21kthreadcore09:37:400
149950,0migration/017655-21kthreadcore11:47:400
149950,0migration/015143-21taskset11:46:360
149950,0migration/01500-21taskset12:15:080
149950,0migration/014339-21kthreadcore08:52:410
149950,0migration/011745-21taskset12:38:260
8305040,0irq/26-0000:00:0-21swapper/307:12:233
4140,0ktimersoftd/00-21swapper/011:29:380
339940,0migration/37068-21kthreadcore11:22:403
339940,0migration/322581-21kthreadcore12:07:423
339940,0migration/320545-21kthreadcore11:47:413
339940,0migration/31080-21kthreadcore09:07:423
329940,0watchdog/33552-21lldpd08:25:473
329940,0watchdog/327648-21kthreadcore07:32:423
329940,0watchdog/30-21swapper/312:02:393
329940,0watchdog/30-21swapper/308:57:353
29815040,0irq/29-eth0-tx-9220-21munin-node09:32:372
29815040,0irq/29-eth0-tx-9175-21munin-node10:47:362
29815040,0irq/29-eth0-tx-3344-21ssh12:34:142
29815040,0irq/29-eth0-tx-31237-21diskstats11:37:372
29815040,0irq/29-eth0-tx-28914-21ssh10:18:022
29815040,0irq/29-eth0-tx-28824-21ssh10:02:392
29815040,0irq/29-eth0-tx-20652-21fschecks_time12:27:402
29815040,0irq/29-eth0-tx-1624-21ssh11:00:182
29815040,0irq/29-eth0-tx-0-21swapper/211:09:502
29815040,0irq/29-eth0-tx-0-21swapper/210:22:362
29815040,0irq/29-eth0-tx-0-21swapper/210:13:502
29815040,0irq/29-eth0-tx-0-21swapper/210:07:292
29815040,0irq/29-eth0-tx-0-21swapper/209:42:282
29815040,0irq/29-eth0-tx-0-21swapper/209:27:462
29815040,0irq/29-eth0-tx-0-21swapper/209:22:402
29815040,0irq/29-eth0-tx-0-21swapper/008:22:400
29815040,0irq/29-eth0-tx-0-21swapper/007:50:080
29815040,0irq/29-eth0-tx-0-21swapper/007:22:440
29815040,0irq/29-eth0-tx-0-21swapper/007:17:350
29805040,0irq/28-eth0-rx-0-21swapper/311:27:403
29805040,0irq/28-eth0-rx-0-21swapper/311:12:443
29805040,0irq/28-eth0-rx-0-21swapper/310:23:323
29805040,0irq/28-eth0-rx-0-21swapper/310:07:443
29805040,0irq/28-eth0-rx-0-21swapper/309:13:093
29805040,0irq/28-eth0-rx-0-21swapper/308:19:163
274489944,0cyclictest0-21swapper/212:07:432
274489944,0cyclictest0-21swapper/209:57:582
274489943,0cyclictest3571-21lldpd12:22:502
274489943,0cyclictest3571-21lldpd12:18:502
274489943,0cyclictest3571-21lldpd11:53:192
274489943,0cyclictest3571-21lldpd10:57:182
274489943,0cyclictest3571-21lldpd10:57:182
274489943,0cyclictest3571-21lldpd08:59:172
274489943,0cyclictest3571-21lldpd08:18:162
274489943,0cyclictest3524-21snmpd07:17:372
274489943,0cyclictest3524-21snmpd07:14:222
274489943,0cyclictest25645-21awk09:02:402
274489943,0cyclictest22209-21munin-node11:32:442
274489943,0cyclictest21906-21awk08:37:392
274489943,0cyclictest18962-21awk09:37:382
274489943,0cyclictest18032-21awk07:27:392
274489943,0cyclictest16858-21awk11:47:392
274489943,0cyclictest12493-21awk09:52:392
274489940,0cyclictest0-21swapper/212:04:442
274449944,0cyclictest0-21swapper/111:33:151
274449944,0cyclictest0-21swapper/111:11:301
274449943,0cyclictest6092-21awk10:07:391
274449943,0cyclictest3857-21awk08:02:401
274449943,0cyclictest3830-21awk11:02:401
274449943,0cyclictest3571-21lldpd10:13:471
274449943,0cyclictest3571-21lldpd09:58:161
274449943,0cyclictest3571-21lldpd08:56:161
274449943,0cyclictest3571-21lldpd08:21:461
274449943,0cyclictest3571-21lldpd07:39:161
274449943,0cyclictest3250-21irqbalance12:27:411
274449943,0cyclictest3250-21irqbalance12:22:411
274449943,0cyclictest3250-21irqbalance09:37:301
274449943,0cyclictest3250-21irqbalance07:48:001
274449943,0cyclictest29144-21awk08:42:421
274449943,0cyclictest28900-21awk07:57:381
274449943,0cyclictest25343-21awk10:37:411
274449943,0cyclictest21861-21awk08:37:381
274449943,0cyclictest12524-21awk09:52:391
274439944,0cyclictest0-21swapper/010:42:390
274439943,0cyclictest4645-21sadc11:22:250
274439943,0cyclictest3571-21lldpd12:08:500
274439943,0cyclictest3524-21snmpd08:04:370
274439943,0cyclictest29638-21kworker/0:112:02:380
274439943,0cyclictest21005-21awk12:27:420
259940,0migration/25269-21switchtime07:37:482
259940,0migration/2361-21diskmemload10:42:322
259940,0migration/220272-21cpuspeed_turbos11:12:362
259940,0migration/216480-21fschecks_time10:32:392
259940,0migration/211768-21sh11:23:002
249940,0watchdog/28148-21sort11:42:392
249940,0watchdog/24795-21sh12:37:362
249940,0watchdog/2406-21ssh11:57:312
249940,0watchdog/227596-21cut10:37:432
249940,0watchdog/220811-21kthreadcore09:17:432
249940,0watchdog/214538-21gltestperf11:27:352
249940,0watchdog/214353-21fschecks_time08:32:392
249940,0watchdog/20-21swapper/211:17:432
249940,0watchdog/20-21swapper/211:02:432
249940,0watchdog/20-21swapper/209:47:432
249940,0watchdog/20-21swapper/209:07:432
179940,0migration/19980-21kthreadcore12:37:441
179940,0migration/19763-21kthreadcore11:42:421
179940,0migration/19015-21munin-node12:17:471
179940,0migration/18439-21kthreadcore07:42:391
179940,0migration/18263-21kthreadcore09:47:421
179940,0migration/14794-21kthreadcore09:07:431
179940,0migration/13611-21kthreadcore10:22:421
179940,0migration/129969-21kthreadcore12:12:421
179940,0migration/128955-21munin-node12:32:401
179940,0migration/124319-21aten_r1power_cu11:52:351
179940,0migration/122739-21kthreadcore08:57:411
179940,0migration/114899-21irqcore11:27:381
179940,0migration/113309-21kthreadcore09:32:421
179940,0migration/112334-21kthreadcore10:27:411
179940,0migration/112213-21latency08:27:431
169940,0watchdog/130781-21ssh11:37:311
169940,0watchdog/110552-21sed12:02:391
169940,0watchdog/10-21swapper/110:53:551
169940,0watchdog/10-21swapper/110:53:551
169940,0watchdog/10-21swapper/108:47:351
149940,0migration/09111-21kthreadcore08:27:410
149940,0migration/08306-21kthreadcore07:42:390
149940,0migration/04778-21sh10:22:460
149940,0migration/032108-21irqcore11:37:400
149940,0migration/030526-21kthreadcore10:02:450
149940,0migration/018675-21kthreadcore07:27:410
8305030,0irq/26-0000:00:0-21swapper/307:47:333
8305030,0irq/26-0000:00:0-21swapper/307:43:223
329930,0watchdog/30-21swapper/308:32:393
329930,0watchdog/30-21swapper/308:07:433
29815030,0irq/29-eth0-tx-0-21swapper/210:27:272
29815030,0irq/29-eth0-tx-0-21swapper/008:47:340
29815030,0irq/29-eth0-tx-0-21swapper/008:07:340
29805030,0irq/28-eth0-rx-0-21swapper/308:02:363
29805030,0irq/28-eth0-rx-0-21swapper/307:27:393
29805030,0irq/28-eth0-rx-0-21swapper/307:17:353
274489932,0cyclictest9998-21cpuspeed_turbos07:22:362
274489932,0cyclictest9153-21kthreadcore07:42:402
274489932,0cyclictest28916-21awk07:57:382
274489932,0cyclictest25235-21awk07:32:402
274489932,0cyclictest21686-21awk07:52:382
274489932,0cyclictest11040-21awk08:07:382
274489930,0cyclictest10604-21diskstats08:52:362
274449932,0cyclictest8945-21cat07:17:491
274449932,0cyclictest32638-21awk08:22:391
274449932,0cyclictest31977-21grep07:12:411
274449932,0cyclictest23195-21awk10:17:381
274449932,0cyclictest18915-21awk12:07:391
274439933,0cyclictest29638-21kworker/0:111:57:400
274439933,0cyclictest29638-21kworker/0:111:53:160
274439933,0cyclictest29638-21kworker/0:111:32:300
274439933,0cyclictest29638-21kworker/0:111:22:330
274439933,0cyclictest26351-21kworker/0:211:08:110
274439933,0cyclictest14240-21kworker/0:010:37:350
274439933,0cyclictest14240-21kworker/0:010:32:290
274439933,0cyclictest14240-21kworker/0:009:47:350
274439933,0cyclictest14240-21kworker/0:009:17:450
274439933,0cyclictest14240-21kworker/0:009:07:310
274439933,0cyclictest14240-21kworker/0:008:42:350
274439933,0cyclictest14240-21kworker/0:007:52:290
274439933,0cyclictest14240-21kworker/0:007:32:330
274439933,0cyclictest14240-21kworker/0:007:12:270
274439933,0cyclictest12274-21kworker/0:212:22:520
274439932,0cyclictest14240-21kworker/0:009:52:310
259930,0migration/25431-21kthreadcore08:02:412
259930,0migration/214104-21fschecks_time07:47:372
249930,0watchdog/20-21swapper/208:47:352
249930,0watchdog/20-21swapper/208:27:272
249930,0watchdog/20-21swapper/208:12:352
179930,0migration/11779-21kthreadcore10:02:461
169930,0watchdog/10-21swapper/109:02:271
169930,0watchdog/10-21swapper/107:27:341
169930,0watchdog/10-21swapper/107:22:341
249920,0watchdog/20-21swapper/208:42:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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