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2026-05-14 - 00:34

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 Wed May 13, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1367024738,0sleep20-21swapper/206:50:592
1950923823,0sleep00-21swapper/006:52:250
1942723626,0sleep30-21swapper/306:51:283
1960423329,0sleep10-21swapper/106:53:301
198729977,0cyclictest8723-21sensors07:56:060
339960,0migration/332129-21sh12:03:183
339960,0migration/325337-21sh11:20:243
339960,0migration/323769-21sh11:36:333
339960,0migration/318432-21sh09:14:493
339960,0migration/318229-21sh09:54:563
339960,0migration/318229-21sh09:54:563
339960,0migration/311020-21sh09:30:543
29715060,0irq/26-eth0-rx-5310-21cut08:45:573
29715060,0irq/26-eth0-rx-20919-21grep08:56:023
29715060,0irq/26-eth0-rx-1828-21sed10:45:443
29715060,0irq/26-eth0-rx-13222-21grep08:01:023
198739960,0cyclictest8546-21smartctl07:10:591
149960,0migration/09785-21sh10:09:120
149960,0migration/028766-21kthreadcore12:21:000
149960,0migration/025052-21latency_hist12:00:440
149960,0migration/01888-21sh10:25:440
4150,0ktimersoftd/00-21swapper/009:18:230
339950,0migration/37513-21kthreadcore09:26:023
339950,0migration/36902-21timerandwakeup07:06:083
339950,0migration/34534-21kthreadcore07:31:003
339950,0migration/331614-21kthreadcore10:01:013
339950,0migration/329671-21kthreadcore11:41:013
339950,0migration/329382-21taskset08:14:463
339950,0migration/326871-21timerandwakeup07:21:093
339950,0migration/326343-21aten_r1power_en10:40:553
339950,0migration/324404-21munin-node10:16:073
339950,0migration/318179-21kthreadcore07:41:023
339950,0migration/317809-21kthreadcore07:16:033
339950,0migration/317211-21diskmemload10:33:273
339950,0migration/316769-21munin-node08:05:583
339950,0migration/314785-21latency11:31:013
339950,0migration/312362-21kthreadcore07:36:033
339950,0migration/311165-21fschecks_count08:25:583
339950,0migration/310806-21sh10:50:583
339950,0migration/310342-21irqcore11:51:003
29725050,0irq/27-eth0-tx-429-21unixbench_multi10:01:072
29725050,0irq/27-eth0-tx-3726-21if_eth1.309:46:002
29725050,0irq/27-eth0-tx-3726-21if_eth1.309:46:002
29725050,0irq/27-eth0-tx-25744-21munin-node11:21:052
29725050,0irq/27-eth0-tx-19439-21kthreadcore10:56:032
29725050,0irq/27-eth0-tx-18305-21munin-node10:36:032
29725050,0irq/27-eth0-tx-17440-21munin-node11:36:032
29725050,0irq/27-eth0-tx-1665-21munin-node11:05:592
29725050,0irq/27-eth0-tx-11386-21ssh10:31:012
29725050,0irq/27-eth0-tx-11310-21perl10:10:572
29725050,0irq/27-eth0-tx-0-21swapper/212:21:202
29725050,0irq/27-eth0-tx-0-21swapper/211:12:472
29725050,0irq/27-eth0-tx-0-21swapper/209:36:012
29725050,0irq/27-eth0-tx-0-21swapper/008:32:180
29725050,0irq/27-eth0-tx-0-21swapper/007:51:000
29715050,0irq/26-eth0-rx-8145-21ntp_offset10:06:033
29715050,0irq/26-eth0-rx-21891-21cut11:56:023
29715050,0irq/26-eth0-rx-0-21swapper/312:14:273
29715050,0irq/26-eth0-rx-0-21swapper/312:09:483
29715050,0irq/26-eth0-rx-0-21swapper/311:47:153
29715050,0irq/26-eth0-rx-0-21swapper/311:25:583
29715050,0irq/26-eth0-rx-0-21swapper/311:21:003
29715050,0irq/26-eth0-rx-0-21swapper/311:12:453
29715050,0irq/26-eth0-rx-0-21swapper/311:06:003
29715050,0irq/26-eth0-rx-0-21swapper/311:00:573
29715050,0irq/26-eth0-rx-0-21swapper/310:38:573
29715050,0irq/26-eth0-rx-0-21swapper/310:28:363
29715050,0irq/26-eth0-rx-0-21swapper/310:20:503
29715050,0irq/26-eth0-rx-0-21swapper/310:13:503
29715050,0irq/26-eth0-rx-0-21swapper/309:46:043
29715050,0irq/26-eth0-rx-0-21swapper/309:46:043
29715050,0irq/26-eth0-rx-0-21swapper/309:41:113
29715050,0irq/26-eth0-rx-0-21swapper/309:35:473
29715050,0irq/26-eth0-rx-0-21swapper/309:22:253
29715050,0irq/26-eth0-rx-0-21swapper/309:17:473
29715050,0irq/26-eth0-rx-0-21swapper/309:05:193
259950,0migration/28457-21taskset11:28:392
259950,0migration/27914-21latency09:06:032
259950,0migration/27449-21missed_timers10:46:032
259950,0migration/24014-21munin-node07:56:002
259950,0migration/232664-21missed_timers09:21:042
259950,0migration/231845-21kthreadcore08:16:012
259950,0migration/225944-21sh10:19:352
259950,0migration/223345-21cpuspeed_turbos08:10:572
198749955,0cyclictest0-21swapper/212:07:122
198749955,0cyclictest0-21swapper/211:16:552
198749955,0cyclictest0-21swapper/210:52:102
198749955,0cyclictest0-21swapper/210:21:062
198749955,0cyclictest0-21swapper/209:15:402
198749954,0cyclictest3514-21snmpd07:08:342
198749950,0cyclictest0-21swapper/209:55:152
198749950,0cyclictest0-21swapper/209:55:152
198729953,0cyclictest20419-21kworker/0:209:03:080
179950,0migration/1657-21latency_hist12:05:441
179950,0migration/13185-21kthreadcore11:26:011
179950,0migration/126394-21taskset09:39:291
179950,0migration/121078-21latency_hist07:20:451
179950,0migration/117528-21sh10:55:121
179950,0migration/116502-21timerandwakeup10:11:071
179950,0migration/110560-21taskset09:30:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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