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2026-03-30 - 16:10
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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 rackcslot4.osadl.org (updated Mon Mar 30, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23376192254180,29sleep10-21swapper/119:09:501
23375642238195,28sleep00-21swapper/019:09:140
25157202750,11sleep126-21ksoftirqd/100:12:531
24722822590,5sleep00-21swapper/023:10:130
179699540,4rtkit-daemon1795-21rtkit-daemon22:43:240
233773099524,8cyclictest2411917-21apt-get21:45:130
233773099523,6cyclictest2531114-21apt-get00:35:140
179699520,4rtkit-daemon1795-21rtkit-daemon23:23:570
233773099513,5cyclictest2397729-21apt-get21:25:160
233773099512,8cyclictest2415611-21apt-get21:50:140
233773099502,6cyclictest2527704-21apt-get00:30:140
233773099502,5cyclictest2516815-21apt-get00:15:130
233773099492,6cyclictest2394041-21appstreamcli21:20:040
179699490,3rtkit-daemon1795-21rtkit-daemon22:32:051
233773099482,5cyclictest2482664-21apt-get23:25:130
233773099482,11cyclictest2401278-21apt-get21:30:130
233773099479,4cyclictest2386077-21diskmemload21:40:250
233773099472,6cyclictest2437521-21apt-get22:20:130
233773099471,7cyclictest2444544-21apt-get22:30:140
24718042450,6sleep10-21swapper/123:09:441
233773099432,7cyclictest2386077-21diskmemload23:57:400
2337730994324,17cyclictest2523596-21sh00:23:460
233773099431,5cyclictest2386077-21diskmemload00:01:160
24200652410,3chrt0-21swapper/121:55:231
179699410,4rtkit-daemon0-21swapper/022:49:440
233773099391,6cyclictest2386077-21diskmemload21:10:400
179699380,3rtkit-daemon0-21swapper/021:49:421
179699380,3rtkit-daemon0-21swapper/019:43:440
233773099371,6cyclictest2386077-21diskmemload23:51:340
24300262360,10chrt2430025-21chmod22:10:021
233773099352,6cyclictest2493032-21apt-get23:40:130
2337730993511,5cyclictest2344305-21seq19:22:260
179699350,4rtkit-daemon2386077-21diskmemload22:50:181
179699350,4rtkit-daemon1795-21rtkit-daemon00:25:341
179699350,3rtkit-daemon0-21swapper/122:15:130
2337735993428,4cyclictest2464906-21ssh22:59:241
179699340,4rtkit-daemon1795-21rtkit-daemon19:50:300
179699340,4rtkit-daemon1795-21rtkit-daemon00:15:021
179699340,3rtkit-daemon0-21swapper/122:08:230
179699340,3rtkit-daemon0-21swapper/121:04:520
179699340,3rtkit-daemon0-21swapper/023:38:570
179699340,3rtkit-daemon0-21swapper/000:09:081
233773099332,6cyclictest2337902-21apt-get19:10:120
179699330,4rtkit-daemon1795-21rtkit-daemon23:15:010
233773599320,1cyclictest0-21swapper/119:44:391
233773099329,6cyclictest2450279-21seq22:37:480
233773099323,8cyclictest2374550-21apt-get20:40:120
233773099323,7cyclictest2430197-21apt-get22:10:130
2337730993212,3cyclictest2459769-21sh22:50:380
2337730993211,4cyclictest2421053-21sh21:56:480
179699320,4rtkit-daemon1795-21rtkit-daemon23:43:421
179699320,4rtkit-daemon1795-21rtkit-daemon21:36:550
179699320,3rtkit-daemon0-21swapper/023:13:061
179699320,3rtkit-daemon0-21swapper/020:42:211
179699320,3rtkit-daemon0-21swapper/000:32:001
233773099319,5cyclictest2486330-21grep23:30:140
233773099317,6cyclictest2364663-21cat20:15:000
233773099313,6cyclictest2461858-21apt-get22:55:110
233773099312,5cyclictest2366729-21apt-get20:20:120
2337730993111,4cyclictest2380188-21cron20:59:560
233773099311,12cyclictest2469008-21diskstats23:05:150
179699310,4rtkit-daemon1795-21rtkit-daemon19:55:240
179699310,4rtkit-daemon1795-21rtkit-daemon00:06:270
179699310,3rtkit-daemon0-21swapper/120:02:220
179699310,3rtkit-daemon0-21swapper/022:42:391
179699310,3rtkit-daemon0-21swapper/021:52:021
179699310,3rtkit-daemon0-21swapper/021:31:541
179699310,3rtkit-daemon0-21swapper/019:58:251
233773599300,10cyclictest23453632/usr/sbin/munin19:25:211
233773099308,20cyclictest2385596-21unixbench_singl21:05:260
233773099302,6cyclictest2386077-21diskmemload00:25:400
2337730993014,4cyclictest2340122-21grep19:15:030
2337730993011,2cyclictest2468181-21sh23:04:070
179699300,4rtkit-daemon1795-21rtkit-daemon22:01:160
179699300,3rtkit-daemon0-21swapper/100:13:380
179699300,3rtkit-daemon0-21swapper/021:22:091
179699300,3rtkit-daemon0-21swapper/020:48:111
233773099297,5cyclictest2386077-21diskmemload23:47:470
233773099296,6cyclictest788-21systemd-logind20:05:220
233773099292,6cyclictest2378448-21apt-get20:50:140
233773099292,5cyclictest2352989-21apt-get19:45:150
2337730992912,2cyclictest2378258-21/usr/sbin/munin20:50:000
2337730992911,2cyclictest2393077-21sh21:19:050
179699290,3rtkit-daemon1795-21rtkit-daemon20:38:510
179699290,3rtkit-daemon0-21swapper/023:24:091
179699290,3rtkit-daemon0-21swapper/022:01:271
179699290,3rtkit-daemon0-21swapper/021:29:301
233773599282,6cyclictest2342230-21python319:20:011
233773099282,8cyclictest2386077-21diskmemload22:25:590
233773099280,13cyclictest2350670-21latency_hist19:40:020
179699280,3rtkit-daemon1795-21rtkit-daemon19:27:300
179699280,12rtkit-daemon0-21swapper/120:07:491
25232062270,4chrt0-21swapper/100:22:481
233773599273,17cyclictest2441136-21apt-get22:25:151
233773599270,6cyclictest0-21swapper/121:37:411
233773099271,7cyclictest2371402-21ntp_states20:30:220
179699270,4rtkit-daemon1795-21rtkit-daemon23:28:051
179699270,3rtkit-daemon0-21swapper/019:23:551
179699270,1rtkit-daemon1795-21rtkit-daemon20:14:111
2337735992623,2cyclictest66950irq/132-enp2s022:45:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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