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2026-08-23 - 03:27

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 Sun Aug 23, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
700027574,0sleep00-21swapper/018:46:020
304450420,0irq/25-eth10-21swapper/318:45:093
678522824,0sleep20-21swapper/218:43:322
666722622,0sleep10-21swapper/118:42:151
707099130,0cyclictest11912-21ssh20:47:530
29715070,0irq/26-eth0-rx-19632-21diskstats22:36:163
70719966,0cyclictest5162-21diskmemload21:07:421
70719960,0cyclictest5162-21diskmemload22:55:331
70719960,0cyclictest0-21swapper/121:31:021
339960,0migration/39568-21sh22:48:133
339960,0migration/37611-21sh23:47:173
339960,0migration/3431-21sh23:01:483
339960,0migration/328131-21sh20:58:093
339960,0migration/32261-21sh22:23:533
339960,0migration/320920-21sh21:15:353
339960,0migration/315565-21sh00:13:443
339960,0migration/312748-21sh20:50:223
29715060,0irq/26-eth0-rx-26125-21python21:56:263
29715060,0irq/26-eth0-rx-23435-21python23:36:283
29715060,0irq/26-eth0-rx-23063-21sed20:31:233
29715060,0irq/26-eth0-rx-23063-21sed20:31:233
29715060,0irq/26-eth0-rx-0-21swapper/321:43:073
149960,0migration/09733-21sh23:10:220
149960,0migration/032494-21sh23:22:220
149960,0migration/027396-21sh22:20:480
149960,0migration/026933-21sh22:40:590
149960,0migration/011992-21sh21:50:420
70719955,0cyclictest5162-21diskmemload23:31:111
70719955,0cyclictest0-21swapper/122:18:111
70719955,0cyclictest0-21swapper/121:45:331
70719955,0cyclictest0-21swapper/121:01:051
70719955,0cyclictest0-21swapper/120:59:591
70719950,0cyclictest0-21swapper/123:59:241
70719950,0cyclictest0-21swapper/122:23:131
70719950,0cyclictest0-21swapper/121:59:441
70709955,0cyclictest0-21swapper/023:40:160
70709950,0cyclictest0-21swapper/023:17:250
70709950,0cyclictest0-21swapper/022:34:130
70709950,0cyclictest0-21swapper/022:03:090
70709950,0cyclictest0-21swapper/021:39:300
35150,0ktimersoftd/30-21swapper/322:41:153
339950,0migration/38791-21kthreadcore20:21:243
339950,0migration/37137-21kthreadcore21:46:213
339950,0migration/35824-21if_eth121:26:193
339950,0migration/35445-21aten_r1power_fr21:06:163
339950,0migration/3520-21kthreadcore20:16:233
339950,0migration/33722-21latency_hist22:06:043
339950,0migration/330835-21taskset00:01:253
339950,0migration/329241-21kthreadcore23:21:213
339950,0migration/32606-21munin-node21:21:253
339950,0migration/323418-21munin-node19:46:193
339950,0migration/32289-21munin-node19:06:193
339950,0migration/322784-21taskset20:06:553
339950,0migration/320125-21taskset18:53:263
339950,0migration/318514-21kthreadcore23:56:213
339950,0migration/31466-21latency_hist23:26:043
339950,0migration/310981-21latency_hist20:26:053
339950,0migration/310963-21gltestperf23:11:163
29725050,0irq/27-eth0-tx-8638-21munin-node00:11:262
29725050,0irq/27-eth0-tx-28813-21munin-node21:41:272
29725050,0irq/27-eth0-tx-27256-21munin-node22:41:272
29725050,0irq/27-eth0-tx-26107-21munin-node23:21:252
29725050,0irq/27-eth0-tx-1899-21crond23:06:042
29725050,0irq/27-eth0-tx-13358-21cat21:11:042
29725050,0irq/27-eth0-tx-11683-21ssh21:06:462
29725050,0irq/27-eth0-tx-0-21swapper/223:56:152
29725050,0irq/27-eth0-tx-0-21swapper/223:46:452
29725050,0irq/27-eth0-tx-0-21swapper/223:43:292
29725050,0irq/27-eth0-tx-0-21swapper/222:16:212
29725050,0irq/27-eth0-tx-0-21swapper/200:07:102
29725050,0irq/27-eth0-tx-0-21swapper/019:56:460
29725050,0irq/27-eth0-tx-0-21swapper/019:42:530
29725050,0irq/27-eth0-tx-0-21swapper/019:20:500
29715050,0irq/26-eth0-rx-28510-21munin-node19:26:173
29715050,0irq/26-eth0-rx-27257-21taskset22:20:243
29715050,0irq/26-eth0-rx-26404-21kthreadcore21:16:213
29715050,0irq/26-eth0-rx-0-21swapper/323:41:233
29715050,0irq/26-eth0-rx-0-21swapper/323:32:133
29715050,0irq/26-eth0-rx-0-21swapper/323:17:113
29715050,0irq/26-eth0-rx-0-21swapper/323:00:383
29715050,0irq/26-eth0-rx-0-21swapper/322:51:323
29715050,0irq/26-eth0-rx-0-21swapper/322:31:143
29715050,0irq/26-eth0-rx-0-21swapper/321:55:263
29715050,0irq/26-eth0-rx-0-21swapper/320:52:183
29715050,0irq/26-eth0-rx-0-21swapper/300:06:473
259950,0migration/28655-21kthreadcore22:06:222
259950,0migration/22853-21fschecks_time23:06:172
259950,0migration/226459-21timerwakeupswit18:56:272
259950,0migration/21701-21sh22:22:122
259950,0migration/213344-21kthreadcore20:26:212
259950,0migration/211304-21sh21:27:092
249950,0watchdog/230976-21cat00:01:262
179950,0migration/1326-21munin-node23:01:281
169950,0watchdog/1382-21awk22:41:261
169950,0watchdog/127913-21kthreadcore23:41:221
149950,0migration/08216-21if_eth118:46:200
149950,0migration/06316-21kthreadcore22:06:210
149950,0migration/05610-21kthreadcore19:31:210
149950,0migration/04397-21kthreadcore00:06:210
149950,0migration/03896-21runrttasks21:45:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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