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2026-09-10 - 01:58
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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 Thu Sep 10, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
571925857,0sleep10-21swapper/119:30:531
351570,0ktimersoftd/331053-21perf19:32:113
560024735,0sleep20-21swapper/219:29:332
559823127,0sleep00-21swapper/019:29:310
339960,0migration/36920-21aten_r1power_vo22:22:373
339960,0migration/36803-21sh23:56:223
339960,0migration/330551-21sh22:17:263
339960,0migration/329817-21sh23:48:573
339960,0migration/325371-21sh22:52:143
339960,0migration/314698-21munin-node22:42:423
329960,0watchdog/320246-21nfs4_client23:42:413
259960,0migration/227622-21runrttasks23:27:532
149960,0migration/08023-21sh00:14:150
149960,0migration/029245-21timerwakeupswit23:47:470
8305050,0irq/26-0000:00:6320-21sadc21:02:222
59139955,0cyclictest0-21swapper/221:27:452
59139955,0cyclictest0-21swapper/201:01:132
59139955,0cyclictest0-21swapper/200:39:002
59139954,0cyclictest3524-21snmpd23:58:022
59139950,0cyclictest0-21swapper/223:24:352
59139950,0cyclictest0-21swapper/221:54:522
59129955,0cyclictest0-21swapper/123:31:091
59129955,0cyclictest0-21swapper/122:06:291
59129955,0cyclictest0-21swapper/121:22:491
59129955,0cyclictest0-21swapper/100:25:421
59129950,0cyclictest0-21swapper/123:51:481
59129950,0cyclictest0-21swapper/122:50:381
59129950,0cyclictest0-21swapper/122:19:531
59129950,0cyclictest0-21swapper/100:47:561
59119953,0cyclictest16767-21kworker/0:222:57:390
59119950,0cyclictest0-21swapper/023:27:040
59119950,0cyclictest0-21swapper/020:22:360
4150,0ktimersoftd/00-21swapper/022:39:370
339950,0migration/37397-21sh23:17:393
339950,0migration/34590-21kthreadcore00:32:433
339950,0migration/33797-21kthreadcore20:12:403
339950,0migration/332545-21kthreadcore21:17:413
339950,0migration/330997-21taskset22:34:153
339950,0migration/33089-21diskmemload21:57:553
339950,0migration/33014-21munin-node19:52:353
339950,0migration/329753-21kthreadcore20:07:403
339950,0migration/328476-21munin-node22:12:463
339950,0migration/328045-21cpuspeed_turbos19:47:343
339950,0migration/326641-21cpuspeed_turbos00:27:353
339950,0migration/323109-21kthreadcore23:07:393
339950,0migration/322582-21kthreadcore00:42:403
339950,0migration/321124-21aten2.4-expect21:12:343
339950,0migration/320516-21ksmtuned20:26:493
339950,0migration/319813-21taskset23:25:093
339950,0migration/31222-21kthreadcore00:47:403
329950,0watchdog/331321-21sh00:07:573
329950,0watchdog/329686-21kthreadcore22:52:453
329950,0watchdog/326830-21mdstat23:27:413
329950,0watchdog/317537-21grep00:37:463
329950,0watchdog/316638-21grep19:37:413
329950,0watchdog/312001-21smart_sdb23:37:453
329950,0watchdog/310177-21df19:57:333
329950,0watchdog/30-21swapper/323:02:373
29815050,0irq/29-eth0-tx-307372sleep222:33:282
29815050,0irq/29-eth0-tx-27431-21kthreadcore23:47:402
29815050,0irq/29-eth0-tx-26366-21ssh00:27:272
29815050,0irq/29-eth0-tx-2345-21cat23:52:392
29815050,0irq/29-eth0-tx-21702-21kthreadcore22:47:392
29815050,0irq/29-eth0-tx-17261-21munin-node20:47:382
29815050,0irq/29-eth0-tx-15744-21diskstats22:27:352
29815050,0irq/29-eth0-tx-13584-21munin-node20:22:382
29815050,0irq/29-eth0-tx-11009-21ssh21:47:202
29815050,0irq/29-eth0-tx-0-21swapper/223:10:402
29815050,0irq/29-eth0-tx-0-21swapper/223:01:192
29815050,0irq/29-eth0-tx-0-21swapper/200:54:402
29815050,0irq/29-eth0-tx-0-21swapper/200:13:092
29815050,0irq/29-eth0-tx-0-21swapper/200:03:092
29805050,0irq/28-eth0-rx-7136-21perl20:17:353
29805050,0irq/28-eth0-rx-17555-21kthreadcore22:27:393
29805050,0irq/28-eth0-rx-13794-21python23:57:453
29805050,0irq/28-eth0-rx-11479-21kthreadcore00:17:403
29805050,0irq/28-eth0-rx-0-21swapper/322:37:373
29805050,0irq/28-eth0-rx-0-21swapper/322:07:263
29805050,0irq/28-eth0-rx-0-21swapper/321:52:343
29805050,0irq/28-eth0-rx-0-21swapper/321:46:413
29805050,0irq/28-eth0-rx-0-21swapper/321:41:343
29805050,0irq/28-eth0-rx-0-21swapper/321:33:433
29805050,0irq/28-eth0-rx-0-21swapper/321:33:433
29805050,0irq/28-eth0-rx-0-21swapper/321:27:353
29805050,0irq/28-eth0-rx-0-21swapper/300:57:453
29805050,0irq/28-eth0-rx-0-21swapper/300:13:413
29805050,0irq/28-eth0-rx-0-21swapper/300:04:473
27150,0ktimersoftd/20-21swapper/200:42:372
259950,0migration/29014-21kthreadcore23:17:402
259950,0migration/25352-21sh23:37:152
259950,0migration/229174-21sh20:32:382
259950,0migration/228499-21fschecks_time19:47:352
259950,0migration/221637-21sh22:12:052
259950,0migration/217475-21sh23:03:372
249950,0watchdog/22842-21cpuspeed_turbos00:32:382
249950,0watchdog/215321-21memory00:17:422
249950,0watchdog/20-21swapper/223:42:372
19150,0ktimersoftd/10-21swapper/121:58:411
19150,0ktimersoftd/10-21swapper/100:14:591
179950,0migration/19455-21sh00:33:161
179950,0migration/17955-21kthreadcore20:37:411
179950,0migration/15012-21irqcore23:17:381
179950,0migration/14292-21latency_hist00:52:231
179950,0migration/131272-21sh00:07:491
179950,0migration/130531-21kthreadcore23:12:421
179950,0migration/127014-21gltestperf21:37:381
179950,0migration/125725-21sh23:07:511
179950,0migration/123403-21kthreadcore20:27:391
169950,0watchdog/10-21swapper/123:02:371
149950,0migration/05718-21kthreadcore23:17:390
149950,0migration/05656-21fschecks_time22:02:350
149950,0migration/031824-21kthreadcore19:47:390
149950,0migration/030480-21latency_hist22:17:220
149950,0migration/030194-21kthreadcore20:32:400
149950,0migration/029046-21kthreadcore00:27:400
149950,0migration/023746-21kthreadcore21:12:390
149950,0migration/020906-21df_abs19:42:340
149950,0migration/020622-21kthreadcore00:02:410
149950,0migration/018808-21irqcore21:32:400
149950,0migration/018808-21irqcore21:32:400
149950,0migration/018767-21kthreadcore20:02:380
149950,0migration/018239-21munin-node20:47:370
149950,0migration/018022-21aten_r1power_po00:22:320
149950,0migration/016535-21taskset19:59:070
149950,0migration/015429-21kthreadcore00:37:390
149950,0migration/014755-21munin-node22:42:430
149950,0migration/01453-21kthreadcore00:47:400
149950,0migration/013512-21kthreadcore00:17:410
8305040,0irq/26-0000:00:27413-21cut23:12:222
59139944,0cyclictest0-21swapper/220:12:432
59139943,0cyclictest3899-21awk20:37:382
59139943,0cyclictest3524-21snmpd21:23:452
59139943,0cyclictest3524-21snmpd21:14:452
59139943,0cyclictest3524-21snmpd20:28:152
59139943,0cyclictest3524-21snmpd20:03:152
59139943,0cyclictest3524-21snmpd19:38:442
59139943,0cyclictest29823-21awk21:57:362
59129944,0cyclictest0-21swapper/123:24:321
59129944,0cyclictest0-21swapper/122:08:231
59129944,0cyclictest0-21swapper/119:51:511
59129943,0cyclictest7645-21awk21:02:361
59129943,0cyclictest3571-21lldpd22:45:201
59129943,0cyclictest3571-21lldpd21:53:191
59129943,0cyclictest3571-21lldpd21:11:201
59129943,0cyclictest3571-21lldpd20:43:501
59129943,0cyclictest3571-21lldpd20:23:201
59129943,0cyclictest3571-21lldpd19:57:491
59129943,0cyclictest3571-21lldpd19:47:191
59129943,0cyclictest3571-21lldpd19:39:491
59129943,0cyclictest3571-21lldpd00:02:521
59129943,0cyclictest30476-21awk23:32:371
59129943,0cyclictest27486-21awk00:27:381
59129943,0cyclictest24978-21awk22:32:411
59129943,0cyclictest20704-21awk00:42:371
59129943,0cyclictest18205-21awk20:02:371
59129943,0cyclictest12419-21awk21:47:371
59119944,0cyclictest0-21swapper/022:22:440
59119944,0cyclictest0-21swapper/000:53:090
59119943,0cyclictest6782-21awk23:37:370
59119943,0cyclictest4560-21kworker/0:122:33:350
59119943,0cyclictest3668-21awk21:42:380
59119943,0cyclictest3571-21lldpd19:39:190
59119943,0cyclictest3571-21lldpd00:45:230
59119943,0cyclictest3571-21lldpd00:01:520
59119943,0cyclictest3524-21snmpd19:53:300
59119943,0cyclictest3524-21snmpd19:34:590
59119943,0cyclictest19291-21kworker/0:001:00:400
59119943,0cyclictest18315-21awk22:47:370
59119943,0cyclictest16767-21kworker/0:223:45:000
59119943,0cyclictest16767-21kworker/0:223:17:100
59119943,0cyclictest16767-21kworker/0:222:52:410
59119942,0cyclictest19818-21kworker/0:022:10:290
59119942,0cyclictest17039-21kworker/0:121:27:370
59119942,0cyclictest17039-21kworker/0:120:52:370
59119942,0cyclictest16767-21kworker/0:223:07:380
59119940,0cyclictest32322-21fschecks_count20:57:360
59119940,0cyclictest0-21swapper/023:35:020
59119940,0cyclictest0-21swapper/023:03:160
339940,0migration/39488-21timerwakeupswit21:22:483
339940,0migration/35653-21kthreadcore20:37:403
339940,0migration/331871-21kthreadcore23:32:393
339940,0migration/330903-21kthreadcore23:12:423
339940,0migration/32238-21df_abs22:57:363
339940,0migration/320190-21kthreadcore20:47:403
339940,0migration/316377-21kthreadcore21:07:383
339940,0migration/315818-21kthreadcore20:42:403
339940,0migration/311411-21aten2.4-expect21:47:333
329940,0watchdog/30-21swapper/322:02:333
329940,0watchdog/30-21swapper/300:52:343
29815040,0irq/29-eth0-tx-5684-21munin-node23:37:372
29815040,0irq/29-eth0-tx-24831-21ssh00:23:332
29815040,0irq/29-eth0-tx-24540-21ssh00:07:302
29815040,0irq/29-eth0-tx-12312-21ssh21:47:362
29815040,0irq/29-eth0-tx-0-21swapper/222:42:302
29815040,0irq/29-eth0-tx-0-21swapper/222:37:362
29815040,0irq/29-eth0-tx-0-21swapper/222:12:242
29815040,0irq/29-eth0-tx-0-21swapper/221:32:332
29815040,0irq/29-eth0-tx-0-21swapper/221:32:332
29815040,0irq/29-eth0-tx-0-21swapper/200:47:382
29805040,0irq/28-eth0-rx-0-21swapper/320:32:343
29805040,0irq/28-eth0-rx-0-21swapper/300:22:393
259940,0migration/27588-21irqrtprio19:32:412
259940,0migration/26494-21latency_hist21:02:222
259940,0migration/26348-21latency_hist20:17:222
259940,0migration/24859-21runrttasks22:02:232
259940,0migration/228029-21kthreadcore20:07:392
259940,0migration/22502-21kthreadcore22:17:412
259940,0migration/221748-21if_eth1.319:42:372
259940,0migration/217676-21kthreadcore21:07:382
259940,0migration/211097-21munin-node20:42:372
259940,0migration/210002-21kthreadcore22:22:432
249940,0watchdog/232661-21cut21:17:412
249940,0watchdog/229687-21kthreadcore22:52:452
249940,0watchdog/226023-21ssh21:37:252
249940,0watchdog/20-21swapper/219:57:412
179940,0migration/17924-21kthreadcore19:32:421
179940,0migration/15811-21kthreadcore21:42:401
179940,0migration/126947-21kthreadcore22:12:401
179940,0migration/125588-21if_eth120:52:371
179940,0migration/120242-21kthreadcore20:47:401
179940,0migration/118616-21kthreadcore00:57:411
179940,0migration/118527-21taskset22:27:401
179940,0migration/116776-21kthreadcore23:42:391
179940,0migration/11510-21kthreadcore20:57:391
179940,0migration/11404-21kthreadcore23:52:381
179940,0migration/113259-21taskset20:21:251
179940,0migration/111025-21kthreadcore00:17:401
169940,0watchdog/18532-21unixbench_multi22:57:491
169940,0watchdog/16783-21if_err_eth1.323:37:371
169940,0watchdog/1428-21ssh22:54:131
169940,0watchdog/121844-21kthreadcore21:32:411
169940,0watchdog/121844-21kthreadcore21:32:411
169940,0watchdog/10-21swapper/123:57:371
169940,0watchdog/10-21swapper/122:37:371
169940,0watchdog/10-21swapper/121:17:411
149940,0migration/08778-21needreboot20:37:420
149940,0migration/08652-21kthreadcore21:02:370
149940,0migration/028594-21timerwakeupswit22:12:470
149940,0migration/027461-21irqcore21:37:410
149940,0migration/024648-21df_abs20:07:340
149940,0migration/019757-21kthreadcore22:27:400
149940,0migration/01130-21kthreadcore20:12:390
59139932,0cyclictest0-21swapper/220:52:332
59139930,0cyclictest0-21swapper/219:52:352
59129932,0cyclictest3688-21awk19:52:371
59129932,0cyclictest3571-21lldpd20:14:491
59129930,0cyclictest1147-21cut20:32:411
59129930,0cyclictest0-21swapper/121:12:391
59119933,0cyclictest21953-21awk20:27:370
59119933,0cyclictest17039-21kworker/0:121:57:310
59119933,0cyclictest17039-21kworker/0:121:52:270
59119933,0cyclictest17039-21kworker/0:121:47:310
59119933,0cyclictest17039-21kworker/0:121:22:230
59119933,0cyclictest17039-21kworker/0:121:07:350
59119933,0cyclictest17039-21kworker/0:120:42:350
59119933,0cyclictest17039-21kworker/0:120:17:230
59119933,0cyclictest16767-21kworker/0:223:52:240
59119933,0cyclictest16767-21kworker/0:223:27:300
59119933,0cyclictest16767-21kworker/0:200:32:280
59119933,0cyclictest16767-21kworker/0:200:07:260
59119932,0cyclictest29347-21awk21:17:390
339930,0migration/321083-21cpuspeed_turbos20:27:343
329930,0watchdog/325594-21munin-node20:52:373
329930,0watchdog/30-21swapper/321:02:333
329930,0watchdog/30-21swapper/320:59:333
329930,0watchdog/30-21swapper/320:04:013
329930,0watchdog/30-21swapper/319:32:413
29805030,0irq/28-eth0-rx-0-21swapper/319:42:343
179930,0migration/124320-21aten_r1power_en20:07:331
169930,0watchdog/10-21swapper/122:22:251
169930,0watchdog/10-21swapper/121:27:331
169930,0watchdog/10-21swapper/100:37:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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