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2026-08-19 - 15:56
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot2.osadl.org (updated Wed Aug 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1284723827,0sleep30-21swapper/307:28:573
1294423625,0sleep20-21swapper/207:30:042
1290423018,0sleep00-21swapper/007:29:340
1275723020,0sleep10-21swapper/107:27:551
130779983,0cyclictest9341-21awk10:55:520
130779983,0cyclictest3524-21snmpd07:45:430
130779983,0cyclictest23881-21sadc08:00:360
130779983,0cyclictest17765-21awk11:00:520
130779983,0cyclictest12903-21awk11:35:530
130779980,0cyclictest27674-21munin-node07:40:550
130779973,0cyclictest3571-21lldpd07:31:450
130779972,0cyclictest955-21sh11:26:000
130779972,0cyclictest3524-21snmpd08:37:260
130779972,0cyclictest31147-21awk10:30:520
130779972,0cyclictest28145-21sort12:00:580
130779972,0cyclictest21527-21awk07:35:510
130779972,0cyclictest19646-21awk11:20:530
130779972,0cyclictest17138-21grep10:00:550
130779971,0cyclictest18422-21awk09:25:520
130779971,0cyclictest17522-21dump-pmu-power09:45:360
130779970,0cyclictest8977-21sh12:46:400
130779970,0cyclictest8532-21ssh09:55:560
130779970,0cyclictest7185-21fschecks_time10:35:520
130779970,0cyclictest6172-21munin-node08:10:480
130779970,0cyclictest32012-21port_sshpriv12:40:580
130779970,0cyclictest31639-21munin-node08:05:480
130779970,0cyclictest31358-21sh12:23:030
130779970,0cyclictest31183-21ssh10:49:220
130779970,0cyclictest30817-21kthreadcore11:05:570
130779970,0cyclictest27679-21sh10:09:540
130779970,0cyclictest25104-21kthreadcore10:25:550
130779970,0cyclictest20966-21ssh10:24:460
130779970,0cyclictest19299-21grep09:00:540
130779970,0cyclictest18340-21sed11:20:360
130779970,0cyclictest1771-21entropy11:10:490
130779970,0cyclictest16889-21cut11:55:560
130779970,0cyclictest14853-21ssh12:30:570
130779970,0cyclictest13953-21sh12:12:090
130779970,0cyclictest10138-21munin-node09:20:500
130779970,0cyclictest0-21swapper/011:50:540
130779970,0cyclictest0-21swapper/011:32:240
130779970,0cyclictest0-21swapper/008:25:560
339960,0migration/38676-21sh09:39:423
339960,0migration/36050-21munin-plugin-st10:35:363
339960,0migration/324326-21sh12:37:063
339960,0migration/319256-21munin-node09:45:543
339960,0migration/31374-21sh09:53:033
339960,0migration/310454-21sh09:59:183
29805060,0irq/28-eth0-rx-32653-21grep11:45:553
29805060,0irq/28-eth0-rx-25322-21port_sshpriv12:55:583
130909960,0cyclictest24301-21diskmemload12:30:082
130839966,0cyclictest0-21swapper/112:54:181
130839960,0cyclictest0-21swapper/110:38:331
130839960,0cyclictest0-21swapper/109:05:511
130779961,0cyclictest17292-21cut12:35:490
130779960,0cyclictest500-21sh09:35:410
130779960,0cyclictest4802-21df10:15:500
130779960,0cyclictest3657-21which08:30:490
130779960,0cyclictest32500-21munin-node12:25:500
130779960,0cyclictest31927-21cut10:50:480
130779960,0cyclictest31481-21sed08:50:360
130779960,0cyclictest30691-21cut12:05:460
130779960,0cyclictest28889-21sh11:45:470
130779960,0cyclictest2866-21aten2.4-expect09:15:480
130779960,0cyclictest28352-21sh10:10:470
130779960,0cyclictest27963-21grep09:10:360
130779960,0cyclictest26303-21sed09:50:360
130779960,0cyclictest24786-21rm09:30:490
130779960,0cyclictest24254-21sort08:45:360
130779960,0cyclictest20934-21aten2.4-expect09:05:480
130779960,0cyclictest20831-21munin-node08:20:490
130779960,0cyclictest20303-21sh11:40:390
130779960,0cyclictest19321-21cpu12:55:490
130779960,0cyclictest18537-21tune2fs09:45:510
130779960,0cyclictest17243-21aten_r1power_po08:40:480
130779960,0cyclictest15824-21df_inode12:15:500
130779960,0cyclictest15053-21cpu10:40:490
130779960,0cyclictest13442-21aten2.4-expect08:15:470
130779960,0cyclictest10640-21grep07:50:490
130779960,0cyclictest10550-21rm12:50:390
130779960,0cyclictest0-21swapper/008:55:470
130779960,0cyclictest0-21swapper/008:00:360
8305050,0irq/26-0000:00:3222-17sedispatch12:05:372
8305050,0irq/26-0000:00:0-21swapper/308:10:363
8305050,0irq/26-0000:00:0-21swapper/212:55:372
35150,0ktimersoftd/30-21swapper/311:36:463
339950,0migration/39066-21timerandwakeup08:31:013
339950,0migration/38126-21munin-node12:10:523
339950,0migration/33683-21kthreadcore08:50:543
339950,0migration/331943-21aten_r1power_en10:50:483
339950,0migration/33089-21munin-node12:45:533
339950,0migration/328464-21fschecks_time07:40:503
339950,0migration/327997-21hddtemp_smartct11:25:503
339950,0migration/326917-21kthreadcore11:05:563
339950,0migration/326539-21kthreadcore10:25:553
339950,0migration/326403-21kthreadcore10:45:543
339950,0migration/326107-21munin-node09:30:543
339950,0migration/325942-21munin-node12:40:493
339950,0migration/325198-21kthreadcore08:20:553
339950,0migration/324882-21fschecks_count08:45:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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