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2026-03-26 - 02:52
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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 Thu Mar 26, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
315752201162,26sleep20-21swapper/219:06:172
316822200162,25sleep00-21swapper/019:07:390
316932199159,27sleep10-21swapper/119:07:491
315562199159,27sleep30-21swapper/319:06:023
3195299160,1cyclictest0-21swapper/222:39:592
133622160,0sleep10-21swapper/122:15:201
3195299150,1cyclictest8125-21sed22:50:202
3195299150,1cyclictest5752-21users22:05:202
3195299140,1cyclictest9150-21cstates23:35:132
3195299140,1cyclictest17939-21hddtemp_smartct21:40:142
3195299140,1cyclictest13235-21expr23:40:132
3195299140,1cyclictest0-21swapper/219:45:132
3195299140,1cyclictest0-21swapper/219:15:232
3195299130,1cyclictest6177-21cat21:25:162
3195299130,1cyclictest28770-21fschecks_count00:00:132
3195299130,1cyclictest28770-21fschecks_count00:00:122
3195299120,2cyclictest0-21swapper/221:55:402
3195299120,1cyclictest32267-21rm21:18:022
3195299120,1cyclictest30244-21fschecks_count23:20:132
3195299120,0cyclictest0-21swapper/200:39:132
3194799120,0cyclictest0-21swapper/122:35:201
31939991210,1cyclictest9-21ksoftirqd/020:00:000
3193999121,5cyclictest3594-21grep20:25:010
3195899110,7cyclictest0-21swapper/319:25:113
3195299116,4cyclictest2115-21cat21:20:152
3195299110,4cyclictest19268-21ntp_kernel_err20:55:182
3195299110,3cyclictest0-21swapper/222:47:202
3195299110,2cyclictest24053-21fschecks_time22:30:132
3195299110,10cyclictest0-21swapper/222:15:462
3195299110,1cyclictest32238-21aten_r1power_fr19:10:122
3195299110,1cyclictest0-21swapper/221:50:092
3195299110,1cyclictest0-21swapper/221:39:592
3195299110,1cyclictest0-21swapper/200:32:532
3195299110,0cyclictest0-21swapper/223:30:182
3194799117,4cyclictest21-21ksoftirqd/121:50:341
3194799110,11cyclictest0-21swapper/122:57:421
3193999112,4cyclictest21517-21latency_hist23:10:000
3195299109,1cyclictest28-21ksoftirqd/222:25:242
3195299105,4cyclictest19058-21ssh23:46:542
3195299103,6cyclictest9843-21ntp_kernel_pll_20:35:162
3195299102,7cyclictest0-21swapper/222:11:522
3195299100,2cyclictest26083-21grep23:55:202
3195299100,2cyclictest0-21swapper/221:46:252
3195299100,1cyclictest7686-21expr00:15:142
3195299100,1cyclictest31632-21df22:40:172
3195299100,1cyclictest24769-21taskset21:06:472
3195299100,1cyclictest2268-21ntp_states23:25:172
3195299100,1cyclictest14608-21diskstats23:00:132
3195299100,1cyclictest11521-21cstates00:20:132
3195299100,1cyclictest0-21swapper/220:40:032
3195299100,1cyclictest0-21swapper/220:15:222
3195299100,1cyclictest0-21swapper/219:30:172
3195299100,1cyclictest0-21swapper/219:25:152
3195299100,0cyclictest0-21swapper/223:07:292
3195299100,0cyclictest0-21swapper/222:02:372
3195299100,0cyclictest0-21swapper/200:10:022
3193999100,5cyclictest14754-21latency_hist00:25:000
319529996,1cyclictest28-21ksoftirqd/219:55:002
319529993,5cyclictest9761-21ssh21:30:122
319529993,5cyclictest25990-21tune2fs21:10:132
319529991,2cyclictest29127-21apt-get20:10:112
319529991,1cyclictest26755-21ntp_states23:15:162
319529990,2cyclictest934-21/usr/sbin/munin00:05:182
319529990,1cyclictest25579-21ntp_states20:00:182
319529990,1cyclictest240-21systemd-journal20:49:592
319529990,1cyclictest22304-21grep19:55:142
319529990,1cyclictest17673-21chrt22:20:492
319529990,1cyclictest0-21swapper/223:51:082
319529990,1cyclictest0-21swapper/223:10:142
319529990,1cyclictest0-21swapper/222:58:172
319529990,1cyclictest0-21swapper/220:30:132
319529990,1cyclictest0-21swapper/200:25:162
319529990,0cyclictest0-21swapper/221:00:112
319479995,4cyclictest56-21kworker/1:123:53:421
319479995,4cyclictest0-21swapper/120:54:351
17486290,0sleep00-21swapper/022:20:200
319589986,1cyclictest707-21snmpd22:29:153
319589986,1cyclictest707-21snmpd20:38:593
319589986,1cyclictest707-21snmpd20:07:263
319589986,1cyclictest707-21snmpd19:13:483
319589985,2cyclictest31250-21dump-pmu-power20:15:013
319589985,1cyclictest13650irq/124-ahci[0020:59:553
319589980,6cyclictest22048-21apt-get19:55:123
319589980,5cyclictest0-21swapper/300:31:083
319589980,4cyclictest8781-21apt-get23:35:113
319529986,1cyclictest707-21snmpd20:20:182
319529986,1cyclictest28-21ksoftirqd/219:36:432
319529980,1cyclictest548-21systemd-logind19:20:202
319479988,0cyclictest21-21ksoftirqd/122:50:401
319479988,0cyclictest21-21ksoftirqd/121:42:311
319479988,0cyclictest21-21ksoftirqd/100:09:261
319479987,0cyclictest21-21ksoftirqd/122:25:191
319479984,4cyclictest21-21ksoftirqd/100:27:191
319399987,1cyclictest9-21ksoftirqd/022:55:010
319399987,1cyclictest9-21ksoftirqd/020:38:540
319399986,1cyclictest707-21snmpd22:32:280
319399986,1cyclictest707-21snmpd22:16:350
319399986,1cyclictest707-21snmpd20:59:030
319399984,2cyclictest240-21systemd-journal19:34:590
319399982,6cyclictest12893-21ssh22:57:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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