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2026-01-04 - 02:34

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot5s.osadl.org (updated Sat Jan 03, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2405466995750,5cyclictest2447258-21kworker/u8:1+events_unbound09:20:373
2405463995039,7cyclictest2464810-21sendmail10:00:002
2405466994841,5cyclictest2419519-21kworker/u8:0+events_unbound08:10:193
2405466994739,4cyclictest0-21swapper/309:45:163
2405458994738,6cyclictest2471196-21grep10:15:241
2405453994711,4cyclictest131rcu_preempt09:15:120
2405466994538,4cyclictest2437194-21munin-plugin-st08:40:003
2405466994538,4cyclictest2437194-21munin-plugin-st08:40:003
2405463994518,4cyclictest2447007-21grep09:05:232
240545899453,9cyclictest2500765-21cron11:43:001
2405458994535,6cyclictest2497109-21unixbench_singl11:30:271
2405458994532,9cyclictest2514217-21grep12:20:231
2405463994335,4cyclictest2476965-21cron10:35:012
2405458994332,7cyclictest2447028-21grep09:05:231
2405458994321,19cyclictest0-21swapper/109:00:011
240545899431,9cyclictest2437555-21/usr/sbin/munin08:40:151
240545899431,9cyclictest2437555-21/usr/sbin/munin08:40:151
2405466994235,4cyclictest0-21swapper/311:20:003
2405463994234,5cyclictest68-21kswapd008:20:062
2405463994219,4cyclictest0-21swapper/208:20:012
2405458994234,5cyclictest2509492-21idleruntime-cro12:10:001
2405458994234,5cyclictest2509492-21idleruntime-cro12:09:591
2405458994223,15cyclictest0-21swapper/111:10:001
240545899421,9cyclictest2405952-21/usr/sbin/munin07:10:181
2405458994218,20cyclictest0-21swapper/109:35:271
2405458994213,24cyclictest0-21swapper/107:50:151
2405458994212,26cyclictest0-21swapper/107:15:261
2405453994231,7cyclictest2431433-21sshd08:20:260
2405453994230,8cyclictest2457934-21cron09:40:000
240545399422,7cyclictest131rcu_preempt11:25:120
2405466994129,8cyclictest2478702-21sendmail10:40:013
2405466994127,10cyclictest391ktimers/312:10:133
2405466994127,10cyclictest391ktimers/312:10:133
240546699411,9cyclictest0-21swapper/309:05:113
2405463994115,7cyclictest2491910-21grep11:15:242
240545899411,11cyclictest2491958-21head11:15:241
240545899411,10cyclictest2518662-21cut12:35:171
2405453994127,9cyclictest2485547-21sendmail11:00:010
2405463994029,8cyclictest438-21cron07:25:012
240545899401,9cyclictest2506303-21/usr/sbin/munin12:00:181
240545899401,9cyclictest2502994-21/usr/sbin/munin11:50:151
240545899401,8cyclictest2493394-21/usr/sbin/munin11:20:231
240545899401,8cyclictest2417219-21/usr/sbin/munin07:40:231
240545899401,11cyclictest2418317-21diskstats07:45:151
2405466993933,4cyclictest2497462-21kworker/u8:1+events_unbound11:40:593
2405466993928,8cyclictest391ktimers/311:10:113
2405463993931,4cyclictest0-21swapper/211:00:012
2405463993930,5cyclictest2419248-21unixbench_singl07:45:252
2405458993932,4cyclictest2473365-21munin-plugin-st10:25:001
2405458993927,8cyclictest2451122-21sendmail09:20:001
240545899391,9cyclictest2423539-21fschecks_time08:00:161
240545899391,7cyclictest2476278-21/usr/sbin/munin10:30:251
2405458993914,22cyclictest0-21swapper/111:10:211
2405458993912,24cyclictest0-21swapper/107:35:291
240545899391,11cyclictest2444734-21meminfo09:00:191
240545899391,10cyclictest2498082-21/usr/sbin/munin11:35:181
240545899391,10cyclictest2482799-21memory10:50:211
2405466993830,4cyclictest0-21swapper/312:16:043
2405466993826,8cyclictest2448713-21grep09:10:293
2405463993828,6cyclictest0-21swapper/209:15:282
240545899382,5cyclictest2435261-21cron08:35:001
240545899382,10cyclictest2459661-21cron09:45:001
240545899381,9cyclictest2468453-21/usr/sbin/munin10:10:131
240545899381,8cyclictest2455158-21/usr/sbin/munin09:30:191
240545899381,7cyclictest2486118-21/usr/sbin/munin11:00:191
240545899381,5cyclictest2484048-21/usr/sbin/munin10:55:161
2405458993811,24cyclictest2461435-21latency_hist09:50:011
2405458993811,24cyclictest0-21swapper/108:35:061
2405458993811,24cyclictest0-21swapper/108:35:061
240545899381,10cyclictest2475264-21cron10:30:011
2405453993830,6cyclictest2485208-21kworker/u8:3+events_unbound11:30:560
240545899379,24cyclictest0-21swapper/108:15:251
240545899378,5cyclictest2410739-21seq07:20:291
240545899377,7cyclictest2516009-21seq12:26:111
2405458993729,4cyclictest0-21swapper/110:05:001
240545899372,5cyclictest2512926-21sendmail-msp12:20:001
240545899372,5cyclictest2427198-21meminfo08:10:201
240545899372,5cyclictest2413059-21/usr/sbin/munin07:30:121
240545899372,5cyclictest2413059-21/usr/sbin/munin07:30:121
2405458993725,8cyclictest2452353-21grep09:20:241
240545899371,9cyclictest2516889-21diskstats12:30:151
240545899371,9cyclictest2477309-21df10:35:121
240545899371,9cyclictest2464641-21sshd09:58:201
240545899371,9cyclictest2449077-21taskset09:13:541
240545899371,8cyclictest2467312-21/usr/sbin/munin10:05:221
240545899371,7cyclictest2411519-21fschecks_count07:25:171
240545899371,6cyclictest2501354-21fschecks_time11:45:161
240545899371,10cyclictest2462654-21grep09:50:281
2405466993630,4cyclictest2447258-21kworker/u8:1+events_unbound09:27:413
2405466993628,6cyclictest2473214-21kworker/u8:0+events_unbound10:25:413
2405466993617,5cyclictest2512873-21kworker/u8:1+events_unbound12:26:223
2405463993630,4cyclictest2454528-21sh09:30:002
2405463993625,7cyclictest2519488-21grep12:35:262
240545899363,7cyclictest2422196-21/usr/sbin/munin07:55:231
240545899361,9cyclictest2510742-21grep12:10:251
240545899361,9cyclictest2510742-21grep12:10:251
240545899361,9cyclictest2430504-21diskstats08:20:161
240545899361,7cyclictest2494323-21/usr/sbin/munin11:25:141
240545899361,7cyclictest2454384-21taskset09:28:201
240545899361,7cyclictest2440859-21/usr/sbin/munin08:50:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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