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2026-05-20 - 10:44
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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 100 highest latencies:
System rackeslot8.osadl.org (updated Wed May 20, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
77893122990,294sleep1712946-21kworker/u16:2+efi_rts_wq19:10:161
12579062650,12sleep014-21ksoftirqd/000:31:130
778719993229,1cyclictest0-21swapper/320:50:013
778719992825,1cyclictest0-21swapper/323:21:483
778719992825,1cyclictest0-21swapper/323:05:013
778719992421,1cyclictest0-21swapper/320:25:193
10208802240,1sleep10-21swapper/122:01:381
778719992320,1cyclictest0-21swapper/319:45:003
778719992319,1cyclictest0-21swapper/322:10:553
77871999230,19cyclictest1195861-21turbostat23:55:003
778719992219,1cyclictest0-21swapper/323:30:163
778719992219,1cyclictest0-21swapper/322:20:013
778719992119,1cyclictest0-21swapper/321:45:203
778719992118,1cyclictest0-21swapper/322:51:123
778719992118,1cyclictest0-21swapper/321:55:223
778719992118,1cyclictest0-21swapper/321:51:533
778719992118,1cyclictest0-21swapper/321:15:143
778719992017,1cyclictest0-21swapper/323:39:593
778719992017,1cyclictest0-21swapper/321:20:183
778719992017,1cyclictest0-21swapper/321:00:043
778719991917,1cyclictest0-21swapper/322:55:123
778719991917,1cyclictest0-21swapper/321:40:043
778719991916,1cyclictest0-21swapper/323:55:163
778719991916,1cyclictest0-21swapper/320:50:183
77871999191,14cyclictest851424-21taskset20:04:023
77871999191,14cyclictest802477-21taskset19:25:183
77871999191,14cyclictest1133001-21chrt23:15:143
77871999191,14cyclictest1131949-21taskset23:13:103
77871999191,13cyclictest857889-21taskset20:09:563
77871999191,12cyclictest1235768-21taskset00:20:013
12029152190,10sleep21202921-21ssh23:57:362
77871999188,7cyclictest10682372sleep322:31:443
778719991816,1cyclictest0-21swapper/300:25:423
778719991815,1cyclictest0-21swapper/323:25:213
778719991815,1cyclictest0-21swapper/322:40:233
778719991815,1cyclictest0-21swapper/321:25:173
778719991815,1cyclictest0-21swapper/321:10:173
77871999181,14cyclictest922328-21sleep21:00:013
77871999181,14cyclictest1123533-21taskset23:06:403
77871999181,13cyclictest973534-21taskset21:31:423
77871999181,13cyclictest793661-21taskset19:19:243
77871999181,13cyclictest784934-21taskset19:13:063
77871999181,13cyclictest1212165-21chrt00:05:183
77871999181,13cyclictest1091418-21taskset22:45:273
77871999178,6cyclictest10542912sleep322:25:163
77871999172,12cyclictest1021002-21taskset22:01:573
778719991715,1cyclictest0-21swapper/320:40:163
778719991715,1cyclictest0-21swapper/320:40:153
778719991714,1cyclictest0-21swapper/321:05:183
778719991714,1cyclictest0-21swapper/319:45:163
778719991714,1cyclictest0-21swapper/300:35:193
778719991714,1cyclictest0-21swapper/300:20:043
778719991714,1cyclictest0-21swapper/300:10:203
77871999171,13cyclictest982189-21taskset21:38:513
77871999171,13cyclictest865550-21taskset20:15:163
77871999171,13cyclictest832721-21taskset19:50:143
77871999171,13cyclictest799406-21taskset19:20:243
77871999171,13cyclictest1251722-21taskset00:30:113
77871999171,13cyclictest1210696-21taskset00:02:053
77871999171,13cyclictest1180477-21taskset23:45:123
77871999171,12cyclictest1173760-21taskset23:40:163
77871999171,12cyclictest1069789-21taskset22:35:133
77871999171,12cyclictest1046166-21chrt22:20:123
77871999171,12cyclictest1028320-21taskset22:05:303
77871999161,12cyclictest891966-21taskset20:35:163
77871999161,12cyclictest889849-21taskset20:31:323
77871999161,12cyclictest871053-21taskset20:20:023
77871999161,12cyclictest864273-21taskset20:14:213
77871999161,12cyclictest844723-21taskset19:55:323
77871999161,12cyclictest813255-21taskset19:35:083
77871999161,12cyclictest812688-21taskset19:31:063
11304742161,11sleep11130602-21mailstats23:10:241
10838722161,8sleep01083878-21ssh22:41:160
7784532150,2sleep30-21swapper/319:08:233
11807652151,10sleep21180436-21/usr/sbin/munin23:45:172
11621542150,11sleep11162245-21awk23:30:251
11461982151,6sleep21146243-21ntp_kernel_pll_23:20:232
9342032141,10sleep0934242-21ntpq21:05:220
11156372131,9sleep21115643-21ssh23:01:392
8441872120,4sleep1844226-21ntp_states19:55:221
12174372120,9sleep01217479-21ntpq00:05:280
11484142121,7sleep0222-21plymouthd23:24:540
11007712121,9sleep20-21swapper/222:54:052
10370202121,3sleep0222-21plymouthd22:12:420
9222192111,7sleep21000-21snmpd20:59:062
9158672112,5sleep1672-21dbus-daemon20:55:011
8586222111,3sleep1859505-21irqrtprio20:10:191
8521842110,8sleep1852818-21sed20:05:171
11718882111,7sleep00-21swapper/023:39:100
11701232111,7sleep11170226-21sed23:35:261
10776802111,6sleep11077686-21ssh22:40:131
10672382114,3sleep21067271-21ntpq22:30:232
10554222110,8sleep11056114-21cut22:25:181
8528192100,3sleep2421rcuc/220:05:172
7776652100,2sleep1222-21plymouthd19:05:241
12414402100,1sleep20-21swapper/200:20:272
12121262101,5sleep21212160-21apt-get00:05:182
12117632100,7sleep11211839-21latency_hist00:05:001
12046542105,2sleep01205478-21sed00:00:180
11567102101,4sleep01156747-21apt-get23:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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