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2026-03-30 - 14:56
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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 highest latencies:
System rackeslot2.osadl.org (updated Mon Mar 30, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221604921510,2sleep30-21swapper/322:40:023
208059321010,1sleep00-21swapper/021:21:190
23583192820,2sleep30-21swapper/300:01:183
1910978992521,2cyclictest0-21swapper/223:15:012
2902298240,8rtkit-daemon1917148-21munin-node22:39:350
1910977992418,2cyclictest134050irq/121-eno123:46:121
1910977992219,2cyclictest1290-21dbus-daemon00:00:011
1910977992214,3cyclictest2390610-21/usr/sbin/munin00:21:221
1910976992219,2cyclictest2285638-21sendmail23:20:000
1910977992118,2cyclictest1329-21rs:main1
1910977992115,4cyclictest257-21systemd-journal00:14:451
1910977992115,2cyclictest134050irq/121-eno122:56:171
2649091200,2phc2sys0-21swapper/321:44:493
1910978992017,1cyclictest0-21swapper/222:40:002
1910977992017,2cyclictest2233421-21apt-key22:50:011
1910977992016,3cyclictest2300154-21missed_timers23:26:211
191097699209,6cyclictest0-21swapper/023:41:160
1910976992012,7cyclictest0-21swapper/021:40:000
1910976992011,5cyclictest2120515-21kworker/u16:0+nfsiod23:32:550
26490911913,2phc2sys0-21swapper/322:05:203
1910978991916,1cyclictest0-21swapper/200:25:002
1910978991916,1cyclictest0-21swapper/200:20:012
1910977991916,2cyclictest2389755-21grep00:20:011
1910977991916,2cyclictest2277293-21systemd23:15:021
1910976991915,2cyclictest2276966-21grep23:15:010
1910976991912,6cyclictest2163711-21kworker/u16:1+nfsiod00:29:380
1910976991912,6cyclictest2138536-21aten2.4-expect21:56:140
1910976991911,7cyclictest0-21swapper/022:26:190
2649091180,5phc2sys0-21swapper/322:01:123
2649091180,2phc2sys0-21swapper/323:53:343
1910978991815,1cyclictest0-21swapper/220:30:012
1910977991815,2cyclictest2111222-21latency_hist21:40:001
1910977991810,3cyclictest2220778-21kthreadcore22:41:201
191097699188,5cyclictest0-21swapper/022:56:190
191097699187,6cyclictest0-21swapper/000:31:190
1910976991815,2cyclictest70-21kcompactd020:06:250
1910976991815,2cyclictest70-21kcompactd020:06:250
1910976991815,2cyclictest1288-1atopacctd21:35:000
1910976991815,2cyclictest0-21swapper/019:20:010
1910976991811,6cyclictest0-21swapper/023:30:010
1910976991810,4cyclictest2062316-21kthreadcore21:11:190
2649091170,2phc2sys0-21swapper/322:32:173
2649091170,2phc2sys0-21swapper/322:11:303
2649091170,2phc2sys0-21swapper/321:13:193
1910978991715,1cyclictest0-21swapper/219:20:012
1910978991714,2cyclictest0-21swapper/223:00:012
1910978991714,1cyclictest0-21swapper/223:35:012
1910978991714,1cyclictest0-21swapper/222:46:172
1910978991714,1cyclictest0-21swapper/220:10:002
1910978991714,1cyclictest0-21swapper/220:10:002
1910978991713,2cyclictest0-21swapper/220:16:262
191097899171,10cyclictest0-21swapper/200:10:012
191097799178,3cyclictest501rcuop/221:17:101
191097799178,2cyclictest501rcuop/200:33:361
191097799178,1cyclictest134050irq/121-eno121:51:261
191097799174,8cyclictest2058565-21diskmemload21:12:081
1910977991714,2cyclictest2120272-21latency_hist21:45:021
1910977991714,2cyclictest2081850-21needreboot21:21:211
1910977991714,2cyclictest1922343-21kthreadcore19:16:201
1910977991714,2cyclictest1290-21dbus-daemon19:35:021
1910977991713,3cyclictest2309171-21switchtime23:31:241
1910977991713,3cyclictest1937008-21switchtime19:26:261
1910977991712,2cyclictest134050irq/121-eno100:07:541
1910977991710,3cyclictest2173694-21cstates22:16:151
1910977991710,1cyclictest601rcuop/323:21:381
191097799170,6cyclictest2146201-21kworker/1:1-mm_percpu_wq22:08:051
191097699179,7cyclictest0-21swapper/022:46:270
191097699178,4cyclictest0-21swapper/000:01:110
1910976991714,2cyclictest2339912-21grep23:51:180
1910976991714,2cyclictest2329978-21sh23:46:120
1910976991714,2cyclictest2119766-21latency_hist21:45:000
1910976991714,2cyclictest2058594-21perf21:10:000
1910976991714,1cyclictest0-21swapper/000:15:000
191097699171,1cyclictest0-21swapper/022:30:100
1910976991711,1cyclictest601rcuop/322:11:200
1910976991711,1cyclictest2260376-21apt-get23:06:110
1910976991710,6cyclictest0-21swapper/023:56:180
1910976991710,3cyclictest2058565-21diskmemload21:17:030
2649091166,2phc2sys0-21swapper/323:13:373
2649091162,4phc2sys0-21swapper/319:10:013
2649091160,2phc2sys0-21swapper/322:27:533
2649091160,2phc2sys0-21swapper/321:36:113
1910978991613,1cyclictest0-21swapper/222:51:222
1910978991613,1cyclictest0-21swapper/222:22:422
1910978991613,1cyclictest0-21swapper/221:35:002
1910978991613,1cyclictest0-21swapper/221:24:472
1910978991613,1cyclictest0-21swapper/221:20:002
1910978991613,1cyclictest0-21swapper/219:49:222
1910978991613,1cyclictest0-21swapper/200:31:192
1910978991613,1cyclictest0-21swapper/200:26:152
191097799168,1cyclictest191rcu_preempt21:48:381
191097799167,3cyclictest501rcuop/222:53:521
191097799167,3cyclictest501rcuop/220:41:391
191097799167,3cyclictest501rcuop/220:35:301
191097799167,3cyclictest501rcuop/220:30:491
191097799167,3cyclictest501rcuop/219:35:471
191097799167,2cyclictest501rcuop/222:37:291
191097799166,3cyclictest501rcuop/222:34:211
1910977991613,2cyclictest2268196-21systemd-run23:10:011
1910977991613,2cyclictest2143474-21sendmail_mailst21:56:241
1910977991613,2cyclictest2008382-21kthreadcore20:26:191
1910977991613,2cyclictest1910974-21cyclictest21:00:001
1910977991613,2cyclictest1296-21polkitd00:01:221
1910977991612,3cyclictest2417479-21fschecks_time00:36:161
1910977991612,3cyclictest2181579-21ssh22:20:321
1910977991612,3cyclictest2167174-21kthreadcore22:11:191
1910977991612,3cyclictest2146312-21kworker/u16:2+nfsiod23:38:011
191097799160,6cyclictest2303054-21kworker/1:2+events23:43:111
191097799160,2cyclictest191rcu_preempt20:16:131
191097699165,2cyclictest0-21swapper/022:16:130
1910976991613,2cyclictest2217517-21fschecks_time22:41:160
1910976991613,2cyclictest2137435-21perf21:55:000
1910976991612,3cyclictest2237118-21kthreadcore22:51:170
1910976991610,5cyclictest2034836-21aten2.4-expect20:51:120
1910976991610,3cyclictest2058565-21diskmemload23:04:140
1910976991610,3cyclictest2058565-21diskmemload22:06:280
1910976991610,3cyclictest2058565-21diskmemload21:26:360
2649091154,2phc2sys0-21swapper/319:11:163
2649091151,3phc2sys0-21swapper/319:36:123
2649091151,2phc2sys0-21swapper/321:05:013
2649091150,2phc2sys0-21swapper/322:56:523
2649091150,2phc2sys0-21swapper/321:18:033
2649091150,2phc2sys0-21swapper/300:38:023
2649091150,2phc2sys0-21swapper/300:07:543
1910978991512,1cyclictest0-21swapper/223:26:182
1910978991512,1cyclictest0-21swapper/222:20:002
1910978991512,1cyclictest0-21swapper/221:15:012
1910978991512,1cyclictest0-21swapper/221:05:012
1910978991512,1cyclictest0-21swapper/219:35:012
191097899150,9cyclictest0-21swapper/221:26:162
191097799157,3cyclictest501rcuop/223:18:211
191097799157,3cyclictest501rcuop/221:31:521
191097799157,3cyclictest501rcuop/220:23:241
191097799157,3cyclictest501rcuop/220:07:531
191097799157,3cyclictest501rcuop/220:07:531
191097799156,3cyclictest501rcuop/221:01:351
191097799156,3cyclictest501rcuop/220:52:131
191097799156,3cyclictest501rcuop/220:02:481
191097799156,3cyclictest501rcuop/219:49:131
191097799153,4cyclictest0-21swapper/123:04:431
1910977991512,2cyclictest2400109-21gltestperf00:26:151
1910977991512,2cyclictest2193335-21kthreadcore22:26:191
1910977991512,2cyclictest2147965-21gltestperf22:01:161
1910977991512,2cyclictest1973103-21proc_pri19:56:211
1910977991512,2cyclictest1288-1atopacctd19:41:211
191097699159,2cyclictest2120515-21kworker/u16:0-nfsiod22:02:060
191097699157,4cyclictest0-21swapper/020:21:130
191097699156,2cyclictest2129012-21munin-run21:50:010
191097699156,2cyclictest2022313-21idleruntime-cro20:40:000
191097699151,9cyclictest1911276-21/usr/sbin/munin19:11:190
1910976991513,1cyclictest2034407-21munin-run20:50:000
1910976991513,1cyclictest1910974-21cyclictest20:31:210
1910976991512,2cyclictest2045795-21mailstats20:56:230
1910976991512,2cyclictest1910974-21cyclictest22:21:140
1910976991512,2cyclictest1288-1atopacctd20:30:000
191097699150,2cyclictest2163711-21kworker/u16:1+nfsiod00:23:120
191097699150,14cyclictest1973909-21systemctl20:00:000
2649091141,7phc2sys0-21swapper/300:31:163
2649091140,4phc2sys0-21swapper/300:12:393
2649091140,2phc2sys0-21swapper/321:50:423
1910978991412,1cyclictest0-21swapper/222:10:022
1910978991412,1cyclictest0-21swapper/219:55:022
1910978991411,1cyclictest0-21swapper/223:56:202
1910978991411,1cyclictest0-21swapper/223:53:212
1910978991411,1cyclictest0-21swapper/223:46:192
1910978991411,1cyclictest0-21swapper/223:44:082
1910978991411,1cyclictest0-21swapper/222:26:222
1910978991411,1cyclictest0-21swapper/222:00:002
1910978991411,1cyclictest0-21swapper/221:52:512
1910978991411,1cyclictest0-21swapper/221:46:222
1910978991411,1cyclictest0-21swapper/220:11:242
191097799148,1cyclictest601rcuop/320:46:321
191097799147,2cyclictest501rcuop/219:10:301
191097799146,3cyclictest501rcuop/220:10:371
191097799144,6cyclictest0-21swapper/119:21:241
1910977991411,2cyclictest1910980-21systemd-run19:10:011
1910977991411,2cyclictest1910974-21cyclictest19:51:131
1910977991410,3cyclictest2054717-21kthreadcore21:06:201
191097699147,5cyclictest257-21systemd-journal19:55:010
191097699144,5cyclictest0-21swapper/000:06:200
191097699141,8cyclictest2417216-21cstates00:36:150
1910976991411,2cyclictest2317168-21kthreadcore23:36:200
1910976991411,2cyclictest2052718-21systemd-run21:05:010
1910976991411,2cyclictest1955371-21unixbench-2d19:41:270
1910976991411,2cyclictest1938769-21gltestperf19:31:140
1910976991411,2cyclictest1928355-21kthreadcore19:21:190
1910976991410,3cyclictest2385202-21kthreadcore00:16:210
1910976991410,3cyclictest2024740-21kthreadcore20:41:180
1910976991410,3cyclictest1956270-21aten_repower_en19:46:140
191097699140,13cyclictest0-21swapper/020:01:130
2649091136,3phc2sys0-21swapper/323:26:203
2649091134,2phc2sys0-21swapper/319:16:253
2649091131,5phc2sys0-21swapper/319:46:133
2649091131,3phc2sys0-21swapper/320:56:123
2649091130,2phc2sys0-21swapper/321:55:553
191097899131,3cyclictest21190172sleep221:43:432
191097899131,3cyclictest20220192sleep220:36:342
191097899131,2cyclictest20398022sleep220:51:252
1910978991311,1cyclictest0-21swapper/223:21:262
1910978991311,1cyclictest0-21swapper/223:10:012
1910978991311,1cyclictest0-21swapper/223:01:112
1910978991311,1cyclictest0-21swapper/222:31:142
1910978991311,1cyclictest0-21swapper/222:11:112
1910978991311,1cyclictest0-21swapper/221:06:142
1910978991311,1cyclictest0-21swapper/219:25:012
1910978991310,1cyclictest0-21swapper/222:41:242
1910978991310,1cyclictest0-21swapper/221:36:122
1910978991310,1cyclictest0-21swapper/220:31:202
1910978991310,1cyclictest0-21swapper/220:21:132
1910978991310,1cyclictest0-21swapper/219:36:202
1910978991310,1cyclictest0-21swapper/200:11:012
1910978991310,1cyclictest0-21swapper/200:04:482
1910977991310,2cyclictest2085927-21aten_repower_cu21:26:161
191097699138,3cyclictest0-21swapper/019:40:020
191097699137,3cyclictest2058565-21diskmemload23:21:310
191097699136,4cyclictest0-21swapper/020:16:140
191097699135,3cyclictest1992037-21latency_hist20:15:010
191097699131,7cyclictest1933532-21cat19:26:200
2649091123,2phc2sys0-21swapper/323:02:473
2649091121,2phc2sys0-21swapper/322:46:203
2649091120,3phc2sys0-21swapper/323:17:323
2649091120,3phc2sys0-21swapper/321:21:123
2649091120,2phc2sys0-21swapper/323:23:553
2649091120,2phc2sys0-21swapper/319:50:273
2649091120,1phc2sys0-21swapper/323:37:033
2649091120,1phc2sys0-21swapper/322:15:463
191097899129,1cyclictest0-21swapper/223:36:202
191097899129,1cyclictest0-21swapper/223:16:012
191097899129,1cyclictest0-21swapper/220:41:202
1910978991210,1cyclictest0-21swapper/220:56:172
1910978991210,1cyclictest0-21swapper/220:46:132
1910978991210,1cyclictest0-21swapper/220:00:002
1910978991210,1cyclictest0-21swapper/219:26:152
1910978991210,1cyclictest0-21swapper/219:11:192
191097899120,2cyclictest24217902sleep200:36:242
2649091112,2phc2sys0-21swapper/321:50:023
2649091111,4phc2sys0-21swapper/320:31:133
2649091111,2phc2sys0-21swapper/323:32:383
2649091111,2phc2sys0-21swapper/320:21:243
2649091111,2phc2sys0-21swapper/319:41:213
2649091110,3phc2sys0-21swapper/300:26:003
2649091110,2phc2sys0-21swapper/323:50:013
2649091110,2phc2sys0-21swapper/322:50:433
2649091110,2phc2sys0-21swapper/322:40:073
2649091110,1phc2sys0-21swapper/320:04:333
191097899118,1cyclictest0-21swapper/220:00:262
191097899110,2cyclictest21467112sleep222:00:302
191097699111,2cyclictest1-21systemd19:10:010
2649091101,4phc2sys0-21swapper/323:06:113
2649091101,2phc2sys0-21swapper/319:56:123
2649091101,2phc2sys0-21swapper/300:21:113
2649091100,2phc2sys0-21swapper/323:55:303
2649091100,2phc2sys0-21swapper/322:24:403
2649091100,2phc2sys0-21swapper/321:30:543
2649091100,2phc2sys0-21swapper/320:50:313
2649091100,2phc2sys0-21swapper/320:26:253
2649091100,1phc2sys0-21swapper/321:27:373
2649091100,1phc2sys0-21swapper/321:05:183
23270572100,2sleep30-21swapper/323:41:553
191097899108,1cyclictest0-21swapper/219:41:212
264909191,3phc2sys0-21swapper/320:41:123
264909191,2phc2sys0-21swapper/319:31:103
264909190,2phc2sys0-21swapper/320:46:223
264909190,2phc2sys0-21swapper/320:38:553
264909190,2phc2sys0-21swapper/320:16:153
264909190,2phc2sys0-21swapper/320:11:223
264909190,2phc2sys0-21swapper/320:06:143
264909190,2phc2sys0-21swapper/320:06:143
264909190,2phc2sys0-21swapper/319:26:143
264909190,2phc2sys0-21swapper/300:15:103
264909190,1phc2sys0-21swapper/319:20:403
19109789991,6cyclictest1910986-21chrt19:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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