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2026-06-04 - 23:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #2

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 rack1slot2s.osadl.org (updated Thu Jun 04, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304450730,0irq/25-eth10-21swapper/306:49:103
2737123723,0sleep00-21swapper/006:53:230
2723723324,0sleep10-21swapper/106:51:481
2707323127,0sleep20-21swapper/206:49:532
274729976,0cyclictest8930-40yum-updatesd-he09:41:221
4160,0ktimersoftd/00-21swapper/010:18:060
35160,0ktimersoftd/30-21swapper/310:18:063
339960,0migration/38795-21sh10:01:243
339960,0migration/332720-21sh09:34:523
339960,0migration/332525-21sh10:35:573
339960,0migration/332092-21sh11:15:443
339960,0migration/331507-21sh12:16:483
339960,0migration/315877-21sh10:24:133
339960,0migration/310812-21munin-node10:03:533
29725060,0irq/27-eth0-tx-27684-21munin-node06:53:530
29715060,0irq/26-eth0-rx-31947-21awk09:13:593
29715060,0irq/26-eth0-rx-23923-21sh11:52:163
29715060,0irq/26-eth0-rx-22765-21munin-run07:38:403
274739960,0cyclictest0-21swapper/210:09:002
274729960,0cyclictest0-21swapper/111:20:321
274729960,0cyclictest0-21swapper/108:08:581
274729960,0cyclictest0-21swapper/108:08:581
274719960,0cyclictest0-21swapper/009:54:380
19160,0ktimersoftd/10-21swapper/110:18:061
179960,0migration/18521-21kthreadcore07:48:571
149960,0migration/07744-21sh10:59:490
149960,0migration/025394-21sh09:11:520
8215050,0irq/24-0000:00:25818-21idleruntime-cro09:53:392
339950,0migration/35838-21kthreadcore06:58:573
339950,0migration/35153-21munin-node07:48:563
339950,0migration/33188-21kthreadcore10:18:553
339950,0migration/331867-21taskset10:54:303
339950,0migration/33161-21kthreadcore11:18:543
339950,0migration/330951-21taskset08:29:413
339950,0migration/33092-21kthreadcore11:58:553
339950,0migration/329473-21munin-node07:18:523
339950,0migration/327018-21munin-node09:53:543
339950,0migration/326266-21kthreadcore07:38:563
339950,0migration/32600-21kthreadcore10:58:543
339950,0migration/325307-21cpuspeed_turbos11:33:513
339950,0migration/324182-21munin-node09:29:023
339950,0migration/323979-21aten_r1power_cu08:03:513
339950,0migration/321151-21kthreadcore09:08:563
339950,0migration/31934-21kthreadcore08:33:563
339950,0migration/314792-21taskset12:04:533
339950,0migration/314333-21kthreadcore09:43:563
339950,0migration/313821-21munin-node08:43:543
339950,0migration/311059-21munin-node07:53:523
339950,0migration/310433-21if_eth1.210:43:523
339950,0migration/310186-21fschecks_time07:28:533
29725050,0irq/27-eth0-tx-3438-21kernelversion09:18:562
29725050,0irq/27-eth0-tx-3265-21ssh10:38:552
29725050,0irq/27-eth0-tx-24685-21munin-node11:54:012
29725050,0irq/27-eth0-tx-0-21swapper/211:18:482
29725050,0irq/27-eth0-tx-0-21swapper/209:03:532
29725050,0irq/27-eth0-tx-0-21swapper/209:01:022
29725050,0irq/27-eth0-tx-0-21swapper/008:43:080
29725050,0irq/27-eth0-tx-0-21swapper/008:31:270
29725050,0irq/27-eth0-tx-0-21swapper/007:42:040
29715050,0irq/26-eth0-rx-24153-21ssh11:31:553
29715050,0irq/26-eth0-rx-23327-21cut09:48:573
29715050,0irq/26-eth0-rx-21394-21tr10:08:563
29715050,0irq/26-eth0-rx-1908-21grep07:43:593
29715050,0irq/26-eth0-rx-18992-21irqstats10:28:553
29715050,0irq/26-eth0-rx-17949-21diskstats10:48:513
29715050,0irq/26-eth0-rx-1714-21df_abs10:38:503
29715050,0irq/26-eth0-rx-16593-21ssh11:28:113
29715050,0irq/26-eth0-rx-14092-21munin-node11:43:573
29715050,0irq/26-eth0-rx-0-21swapper/312:18:453
29715050,0irq/26-eth0-rx-0-21swapper/312:12:483
29715050,0irq/26-eth0-rx-0-21swapper/311:12:173
29715050,0irq/26-eth0-rx-0-21swapper/309:39:093
29715050,0irq/26-eth0-rx-0-21swapper/309:27:073
29715050,0irq/26-eth0-rx-0-21swapper/309:04:343
29715050,0irq/26-eth0-rx-0-21swapper/308:58:553
29715050,0irq/26-eth0-rx-0-21swapper/308:38:553
274729950,0cyclictest0-21swapper/111:51:071
274729950,0cyclictest0-21swapper/110:27:521
274729950,0cyclictest0-21swapper/109:50:021
274719950,0cyclictest376-21ssh12:18:530
274719950,0cyclictest0-21swapper/011:15:590
259950,0migration/225194-21sh10:33:012
259950,0migration/214939-21missed_timers07:28:582
249950,0watchdog/20-21swapper/209:28:542
19150,0ktimersoftd/10-21swapper/109:11:061
179950,0migration/16079-21taskset11:59:001
179950,0migration/127873-21kthreadcore08:03:571
179950,0migration/124590-21latency_hist11:53:391
179950,0migration/120363-21kthreadcore10:48:551
179950,0migration/119389-21kthreadcore11:28:551
169950,0watchdog/18676-21munin-node07:03:541
149950,0migration/09940-21fschecks_time11:03:520
149950,0migration/05007-21kthreadcore09:18:560
149950,0migration/032252-21kthreadcore07:43:590
149950,0migration/03021-21kernelversion08:58:540
149950,0migration/029206-21kthreadcore09:33:560
149950,0migration/028571-21kthreadcore10:33:560
149950,0migration/028055-21taskset07:14:380
149950,0migration/026909-21fschecks_time09:13:520
149950,0migration/024911-21latency_hist11:33:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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