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2026-06-29 - 20:41
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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
Characteristics of the 100 highest latencies:
System rack1slot1.osadl.org (updated Mon Jun 29, 2026 12:45:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1749224370,6sleep00-21swapper/007:05:240
176712207156,25sleep30-21swapper/307:06:543
158022199160,26sleep20-21swapper/207:05:072
175872197158,26sleep10-21swapper/107:05:471
1801199150,1cyclictest28802-21if_err_eno112:30:132
1801199150,1cyclictest240-21systemd-journal12:16:472
1801199142,1cyclictest24876-21ssh09:27:252
1801199140,1cyclictest12673-21tail09:55:142
18011991312,1cyclictest0-21swapper/208:50:192
1801199131,11cyclictest0-21swapper/211:40:112
1801199130,1cyclictest14567-21ntp_states12:10:172
1801199130,1cyclictest0-21swapper/210:08:412
1801199130,1cyclictest0-21swapper/209:50:142
1801199130,0cyclictest16758-21ntpq10:00:192
1801199130,0cyclictest16758-21ntpq10:00:192
1801199120,1cyclictest30179-21apt-config10:19:592
1801199120,1cyclictest10679-21irqstats12:05:162
1801199120,1cyclictest10679-21irqstats12:05:152
1801199120,1cyclictest0-21swapper/211:46:582
1801199120,1cyclictest0-21swapper/211:35:182
1801199120,1cyclictest0-21swapper/211:28:092
1801199120,1cyclictest0-21swapper/211:28:082
1801199120,1cyclictest0-21swapper/210:59:402
1801199120,1cyclictest0-21swapper/210:40:422
1801199120,1cyclictest0-21swapper/210:25:462
1801199120,0cyclictest0-21swapper/212:38:192
1801199120,0cyclictest0-21swapper/207:40:002
1799999124,4cyclictest2504-21ssh12:40:000
18019991110,1cyclictest35-21ksoftirqd/307:15:003
1801999110,7cyclictest28807-21kworker/u8:109:22:053
1801199111,1cyclictest28230-21strings11:00:142
1801199110,3cyclictest0-21swapper/209:30:262
1801199110,2cyclictest0-21swapper/211:18:152
1801199110,10cyclictest0-21swapper/211:55:112
1801199110,1cyclictest6287-21ntp_states10:30:182
1801199110,1cyclictest10916-21perl08:00:132
1801199110,1cyclictest0-21swapper/211:34:392
1801199110,1cyclictest0-21swapper/211:34:392
1801199110,1cyclictest0-21swapper/211:13:012
1801199110,1cyclictest0-21swapper/208:30:122
1801199110,0cyclictest0-21swapper/212:26:122
1801199110,0cyclictest0-21swapper/211:20:462
1801199110,0cyclictest0-21swapper/209:40:342
1801199110,0cyclictest0-21swapper/207:47:312
1799999113,4cyclictest25786-21latency_hist07:25:000
1801999108,1cyclictest35-21ksoftirqd/312:34:593
18019991010,0cyclictest35-21ksoftirqd/311:20:003
1801199109,1cyclictest28-21ksoftirqd/210:51:522
18011991010,0cyclictest0-21swapper/210:15:192
1801199100,1cyclictest9176-21expr10:35:132
1801199100,1cyclictest26950-21cat07:25:142
1801199100,1cyclictest22801-21cstates08:25:132
1801199100,1cyclictest0-21swapper/211:53:422
1801199100,1cyclictest0-21swapper/211:07:052
1801199100,1cyclictest0-21swapper/210:45:142
1801199100,1cyclictest0-21swapper/208:20:122
1799999109,1cyclictest9-21ksoftirqd/012:30:000
1799999108,1cyclictest9-21ksoftirqd/008:10:010
180199990,5cyclictest0-21swapper/309:56:183
180119997,1cyclictest28-21ksoftirqd/208:20:012
180119991,0cyclictest11040-21diskmemload09:45:142
180119990,8cyclictest22112-21grep12:20:202
180119990,1cyclictest6128-21/usr/sbin/munin12:00:122
180119990,1cyclictest13132-21diskstats08:05:142
180119990,1cyclictest0-21swapper/210:11:102
180119990,1cyclictest0-21swapper/209:24:002
180119990,1cyclictest0-21swapper/209:15:182
180119990,1cyclictest0-21swapper/209:13:412
180049990,8cyclictest0-21swapper/112:10:141
180049990,4cyclictest0-21swapper/109:30:221
179999993,5cyclictest11084-21date09:10:010
179999990,7cyclictest0-21swapper/010:35:310
179999990,4cyclictest8036-21ls09:49:590
16517290,0sleep011040-21diskmemload12:14:230
15374290,0sleep30-21swapper/311:27:283
15374290,0sleep30-21swapper/311:27:283
29781280,0sleep00-21swapper/011:02:570
180199987,1cyclictest35-21ksoftirqd/310:03:063
180199987,1cyclictest35-21ksoftirqd/310:03:053
180199985,1cyclictest13650irq/124-ahci[0008:44:553
180199983,1cyclictest0-21swapper/310:30:163
180199982,4cyclictest0-21swapper/311:20:133
180119986,2cyclictest61650irq/122-eno109:35:212
180119986,2cyclictest61650irq/122-eno107:44:452
180119980,1cyclictest548-21systemd-logind07:15:012
180119980,1cyclictest29306-21sh08:40:002
180119980,1cyclictest240-21systemd-journal09:05:012
180119980,1cyclictest240-21systemd-journal08:59:592
180119980,1cyclictest240-21systemd-journal07:54:592
180119980,1cyclictest240-21systemd-journal07:25:012
180119980,1cyclictest21188-21irqstats07:15:002
180119980,1cyclictest11035-21cron09:10:012
180119980,1cyclictest0-21swapper/208:10:132
180049980,5cyclictest0-21swapper/109:20:201
179999986,1cyclictest9-21ksoftirqd/009:30:170
179999985,1cyclictest9-21ksoftirqd/008:44:590
179999982,2cyclictest11040-21diskmemload10:03:470
179999982,2cyclictest11040-21diskmemload10:03:460
179999980,7cyclictest24998-21ssh09:27:440
179999980,7cyclictest24262-21ssh10:10:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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