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2026-03-16 - 14:11
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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 Mar 16, 2026 12:45:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4672226156,26sleep30-21swapper/307:06:183
5772204148,42sleep00-21swapper/007:07:280
5392199162,24sleep10-21swapper/107:07:141
310992199160,26sleep20-21swapper/207:05:042
86672570,0sleep38669-21gltestperf08:30:133
23342190,1sleep121-21ksoftirqd/110:40:521
881991715,1cyclictest28-21ksoftirqd/210:10:152
881991614,1cyclictest28-21ksoftirqd/209:05:142
881991614,1cyclictest28-21ksoftirqd/208:45:162
881991514,1cyclictest28-21ksoftirqd/211:35:002
881991512,0cyclictest0-21swapper/208:50:012
888991411,2cyclictest16108-21tail08:45:173
881991413,1cyclictest28-21ksoftirqd/210:15:102
888991312,1cyclictest25996-21sed10:30:153
888991311,1cyclictest26869-21ssh09:50:133
888991311,1cyclictest16430-21tr07:40:153
888991310,2cyclictest28068-21memory09:10:153
888991310,2cyclictest24904-21sed07:55:203
888991310,2cyclictest24586-21head11:10:143
888991310,2cyclictest11411-21apt-get07:30:103
881991313,0cyclictest28-21ksoftirqd/209:40:282
881991312,1cyclictest28-21ksoftirqd/211:45:142
881991312,1cyclictest28-21ksoftirqd/211:15:112
881991312,1cyclictest28-21ksoftirqd/210:20:192
881991312,1cyclictest28-21ksoftirqd/209:30:192
881991312,1cyclictest28-21ksoftirqd/208:35:142
881991311,1cyclictest28-21ksoftirqd/211:00:102
881991311,1cyclictest28-21ksoftirqd/209:40:012
45372130,0sleep20-21swapper/210:02:522
88899129,2cyclictest7406-21irqstats07:20:163
88899129,2cyclictest31303-21/usr/sbin/munin12:00:163
88899129,2cyclictest18822-21grep11:45:133
88899122,9cyclictest4223-21ntp_states11:25:183
888991211,1cyclictest0-21swapper/311:05:373
888991210,1cyclictest8292-21apt-get10:50:123
88899120,11cyclictest0-21swapper/311:40:173
881991212,0cyclictest28-21ksoftirqd/212:37:352
881991211,1cyclictest28-21ksoftirqd/211:54:592
881991211,1cyclictest28-21ksoftirqd/211:40:172
881991211,1cyclictest28-21ksoftirqd/210:52:342
881991211,1cyclictest28-21ksoftirqd/210:30:202
881991211,1cyclictest28-21ksoftirqd/210:30:012
881991211,1cyclictest28-21ksoftirqd/209:50:512
881991211,0cyclictest28-21ksoftirqd/211:20:232
881991211,0cyclictest28-21ksoftirqd/211:20:232
881991210,1cyclictest28-21ksoftirqd/212:25:012
881991210,1cyclictest28-21ksoftirqd/211:39:592
881991210,1cyclictest28-21ksoftirqd/208:10:012
87299120,0cyclictest0-21swapper/109:00:101
86799123,4cyclictest20893-21latency_hist10:25:000
88899119,1cyclictest28869-21grep08:05:133
88899119,1cyclictest22392-21apt-get11:50:113
88899119,1cyclictest0-21swapper/308:20:163
88899118,2cyclictest2160-21ssh09:19:463
88899113,1cyclictest31243-21sendmail11:20:003
88899112,2cyclictest6521-21memory12:10:173
88899112,1cyclictest30826-21ssh10:35:433
88899112,1cyclictest18584-21ps10:20:183
888991110,1cyclictest18079-21chrt09:39:133
888991110,1cyclictest0-21swapper/308:50:133
88899111,9cyclictest24138-21ssh10:28:283
88899111,9cyclictest15847-21taskset07:39:453
88899111,8cyclictest3212-21cut10:00:193
88199119,1cyclictest28-21ksoftirqd/212:35:002
88199119,1cyclictest28-21ksoftirqd/212:20:002
88199119,1cyclictest28-21ksoftirqd/209:15:112
88199119,1cyclictest28-21ksoftirqd/207:40:002
88199114,1cyclictest28-21ksoftirqd/212:05:192
881991110,1cyclictest28-21ksoftirqd/212:10:112
881991110,1cyclictest28-21ksoftirqd/211:25:162
881991110,1cyclictest28-21ksoftirqd/210:59:212
881991110,1cyclictest28-21ksoftirqd/210:07:052
881991110,1cyclictest28-21ksoftirqd/209:25:152
881991110,1cyclictest28-21ksoftirqd/208:35:012
881991110,1cyclictest28-21ksoftirqd/207:10:192
86799113,4cyclictest32530-21sed10:39:590
86799111,5cyclictest31307-21date11:20:010
88899109,1cyclictest26789-21diskmemload12:17:063
88899109,1cyclictest26789-21diskmemload10:57:103
88899109,1cyclictest26789-21diskmemload10:05:583
88899109,1cyclictest0-21swapper/311:25:013
88899109,1cyclictest0-21swapper/311:25:003
88899109,1cyclictest0-21swapper/310:40:273
88899109,1cyclictest0-21swapper/310:15:203
88899109,1cyclictest0-21swapper/310:10:153
88899109,1cyclictest0-21swapper/309:22:193
88899109,1cyclictest0-21swapper/307:25:143
88899109,1cyclictest0-21swapper/307:25:133
88899108,1cyclictest35-21ksoftirqd/307:54:593
88899108,1cyclictest26789-21diskmemload12:27:043
88899106,3cyclictest28041-21/usr/sbin/munin11:55:203
88899104,5cyclictest23259-21ssh12:31:373
88899103,6cyclictest693-21runrttasks09:40:233
88899102,1cyclictest2488-21idleruntime12:05:143
888991010,0cyclictest35-21ksoftirqd/309:58:153
88899101,8cyclictest17227-21ntp_states11:00:163
88899101,8cyclictest13556-21ssh09:32:413
88899101,8cyclictest12193-21chrt08:37:423
88899101,1cyclictest9713-21ssh11:33:013
88899101,1cyclictest25451-21ssh09:48:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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