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2025-10-29 - 19:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Wed Oct 29, 2025 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29989423560,2sleep3586-21kworker/3:2+events08:36:353
4277742720,4sleep10-21swapper/110:46:311
5006072630,4chrt500611-21cut11:56:382
5180292580,4chrt0-21swapper/012:16:350
211272995848,7cyclictest223064-21latency_hist07:20:001
211272995848,7cyclictest223064-21latency_hist07:20:001
211269995850,5cyclictest476558-21latency_hist11:35:000
211269995846,9cyclictest512043-21diskstats12:11:300
2436732540,5chrt0-21swapper/107:41:311
211269995447,5cyclictest282-21systemd-journal07:35:010
211272995344,6cyclictest392564-21latency_hist10:10:001
211272995344,6cyclictest392564-21latency_hist10:10:001
211276995131,18cyclictest282-21systemd-journal11:52:492
4501212500,4sleep3586-21kworker/3:2-events11:06:393
211269995044,4cyclictest211419-21kworker/u8:3+flush-8:007:36:330
211276994931,15cyclictest237534-21anacron07:41:432
211272994941,6cyclictest486465-21latency_hist11:45:001
211272994941,6cyclictest486465-21latency_hist11:45:001
211272994938,8cyclictest332156-21ntpq09:06:361
2245582480,6chrt371rcuc/207:21:372
2245582480,6chrt371rcuc/207:21:372
211272994842,4cyclictest382700-21latency_hist10:00:001
211272994736,8cyclictest356906-21ntpq09:31:401
211269994638,6cyclictest471837-21kworker/u8:3+flush-8:012:31:320
211269994637,6cyclictest407377-21latency_hist10:25:010
211269994635,8cyclictest303319-21latency_hist08:40:010
3536522450,4chrt0-21swapper/009:31:330
2577142440,4sleep10-21swapper/107:51:461
211276994436,6cyclictest282-21systemd-journal10:25:002
211272994438,4cyclictest158471-21kworker/u8:0+events_unbound08:10:011
4366262430,5sleep20-21swapper/210:51:452
2770282420,6sleep20-21swapper/208:11:382
211269994231,8cyclictest363007-21cp09:40:020
211269994132,7cyclictest530324-21ntpq12:26:390
211269994131,7cyclictest505739-21ntpq12:01:420
211272994031,6cyclictest282-21systemd-journal07:56:501
211272994029,8cyclictest446911-21latency_hist11:05:011
211276993923,14cyclictest491303-21unixbench_multi11:46:492
211272993935,3cyclictest232470-21kworker/u8:1+flush-8:007:36:441
211272993932,5cyclictest447266-21apt-get11:06:291
211269993931,5cyclictest466660-21latency_hist11:25:010
211269993834,3cyclictest536215-21kworker/u8:2+flush-8:012:36:350
211269993833,4cyclictest446655-21kworker/u8:0+events_unbound11:51:380
211269993832,4cyclictest211419-21kworker/u8:3+events_unbound08:20:010
211269993831,5cyclictest421693-21kworker/u8:3+events_unbound10:45:010
211276993727,7cyclictest282-21systemd-journal09:30:012
211276993620,13cyclictest222165-21grep07:16:402
211276993620,13cyclictest222165-21grep07:16:402
211269993631,4cyclictest158471-21kworker/u8:0+flush-8:007:16:460
211269993631,4cyclictest158471-21kworker/u8:0+flush-8:007:16:460
211269993627,6cyclictest322317-21ntpq08:56:410
211272993526,6cyclictest397499-21latency_hist10:15:001
211269993527,7cyclictest232470-21kworker/u8:1+flush-8:007:56:440
211276993428,4cyclictest263570-21apt-get08:01:262
21127699342,24cyclictest462086-21apt-get11:21:272
211272993430,2cyclictest224370-21kthreadcore07:21:371
211272993430,2cyclictest224370-21kthreadcore07:21:371
211272993429,3cyclictest263537-21kworker/u8:2+events_unbound10:55:011
211272993427,5cyclictest536359-21latency_hist12:35:011
211272993424,8cyclictest282-21systemd-journal07:46:491
211269993428,4cyclictest232470-21kworker/u8:1+events_unbound07:41:330
21126999340,31cyclictest293230-21true08:30:000
21127699332,12cyclictest242361-21ntpq07:36:432
211272993323,7cyclictest282-21systemd-journal11:11:491
211272993323,7cyclictest282-21systemd-journal10:38:501
211269993326,5cyclictest382357-21grep09:56:470
21127699323,23cyclictest392924-21apt-get10:11:282
21127699322,23cyclictest308651-21apt-get08:46:252
211276993221,9cyclictest427822-21fschecks_time10:46:312
211272993227,3cyclictest457854-21irqrtprio11:16:371
211272993222,7cyclictest526259-21latency_hist12:25:011
211272993221,9cyclictest282-21systemd-journal09:20:001
211272993221,9cyclictest282-21systemd-journal09:20:001
211269993225,5cyclictest471837-21kworker/u8:3+flush-8:011:56:450
211269993221,9cyclictest282-21systemd-journal12:25:000
21127699313,21cyclictest383078-21apt-get10:01:282
21127699312,23cyclictest278700-21apt-get08:16:292
211276993117,12cyclictest0-21swapper/209:06:322
211276993116,13cyclictest358149-21aten2_r5power_c09:36:322
211272993127,3cyclictest206088-21kworker/u8:1+events_unbound07:10:001
211272993127,2cyclictest536952-21cpuspeed_turbos12:36:301
211272993127,2cyclictest328073-21systemd-run09:05:001
211272993126,4cyclictest232470-21kworker/u8:1+flush-8:007:31:301
211272993126,3cyclictest360278-21kthreadcore09:36:401
211269993126,4cyclictest158471-21kworker/u8:0+events_unbound07:25:020
211269993125,4cyclictest446655-21kworker/u8:0+events_unbound11:20:000
211269993125,4cyclictest421693-21kworker/u8:3+events_unbound10:51:300
211269993121,8cyclictest263545-21munin-node08:01:260
211269993120,9cyclictest312421-21ntpq08:46:450
211269993120,8cyclictest487313-21diskstats11:46:330
21127699302,21cyclictest373188-21apt-get09:51:252
21127699302,10cyclictest485663-21ntpq11:41:412
21127699302,10cyclictest485663-21ntpq11:41:412
211272993026,3cyclictest481539-21cron11:40:001
211272993026,3cyclictest481539-21cron11:40:001
211272993026,3cyclictest411399-21needreboot10:26:381
211272993024,5cyclictest333247-21kworker/u8:1+flush-8:012:26:431
211269993027,2cyclictest333012-21latency_hist09:10:000
211269993023,5cyclictest402394-21idleruntime-cro10:20:010
211269993023,5cyclictest372836-21latency_hist09:50:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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