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2026-05-10 - 09:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Sun May 10, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
730921190,2sleep30-21swapper/300:32:313
730921190,2sleep30-21swapper/300:32:313
327562920,2sleep20-21swapper/221:17:452
327562920,2sleep20-21swapper/221:17:452
23502870,2sleep10-21swapper/100:17:371
23502870,2sleep10-21swapper/100:17:371
204412870,3sleep20-21swapper/222:12:402
204412870,3sleep20-21swapper/222:12:402
314262810,3chrt0-21swapper/219:47:442
314262810,3chrt0-21swapper/219:47:442
187422790,1sleep10-21swapper/120:42:341
187422790,1sleep10-21swapper/120:42:341
275032760,4chrt0-21swapper/223:57:402
275032760,4chrt0-21swapper/223:57:402
275032760,4chrt0-21swapper/223:57:402
126222740,3sleep10-21swapper/121:52:331
17174997162,7cyclictest28675-21fschecks_count00:02:340
119782630,2chrt0-21swapper/320:22:423
119782630,2chrt0-21swapper/320:22:423
17174995741,14cyclictest0-21swapper/000:02:250
17174995741,14cyclictest0-21swapper/000:02:250
97772560,3chrt0-21swapper/323:12:313
97772560,3chrt0-21swapper/323:12:313
301622520,2chrt30161-21awk21:12:360
301622520,2chrt30161-21awk21:12:360
242852520,3sleep30-21swapper/319:30:443
116282520,3sleep20-21swapper/220:22:372
116282520,3sleep20-21swapper/220:22:372
260062490,3sleep30-21swapper/323:52:433
260062490,3sleep30-21swapper/323:52:433
1717499463,10cyclictest29259-21/usr/sbin/munin00:02:400
1717499463,10cyclictest29259-21/usr/sbin/munin00:02:400
99792440,3sleep20-21swapper/200:37:402
99792440,3sleep20-21swapper/200:37:402
59852440,2chrt0-21swapper/220:07:382
184862440,3sleep30-21swapper/320:42:323
184862440,3sleep30-21swapper/320:42:323
17175994432,9cyclictest29706-21/usr/sbin/munin00:02:451
17175994432,9cyclictest29706-21/usr/sbin/munin00:02:451
249032430,3sleep30-21swapper/319:32:333
249032430,3sleep30-21swapper/319:32:333
169402420,3sleep10-21swapper/123:30:311
169402420,3sleep10-21swapper/123:30:311
254502410,3chrt0-21swapper/123:52:371
254502410,3chrt0-21swapper/123:52:371
1717499411,10cyclictest24746-21find23:52:310
1717499411,10cyclictest24746-21find23:52:310
124642410,3sleep30-21swapper/323:17:413
17174994015,23cyclictest25864-21kernelversion22:27:350
17174994015,23cyclictest25864-21kernelversion22:27:350
271902390,1sleep10-21swapper/121:02:441
271902390,1sleep10-21swapper/121:02:441
1717499382,13cyclictest12812-21/usr/sbin/munin20:27:450
1717499382,13cyclictest12812-21/usr/sbin/munin20:27:450
1717499382,13cyclictest12812-21/usr/sbin/munin20:27:450
1717499381,9cyclictest749-21runrttasks00:33:200
1717499381,9cyclictest749-21runrttasks00:33:200
1717499381,10cyclictest7546-21sed20:12:330
1717499380,8cyclictest9520-21grep00:37:340
1717499380,8cyclictest9520-21grep00:37:340
1717499380,6cyclictest7150-21date00:32:210
1717499380,6cyclictest7150-21date00:32:210
17175993730,5cyclictest8926-21threads23:07:431
17175993730,5cyclictest8926-21threads23:07:431
1717499375,9cyclictest14678-21systemd-journal20:50:350
1717499375,9cyclictest14678-21systemd-journal20:50:350
1717499371,9cyclictest749-21runrttasks19:51:030
1717499371,9cyclictest749-21runrttasks19:51:030
1717499371,9cyclictest6642-21memory23:02:360
1717499371,9cyclictest6642-21memory23:02:360
1717499371,9cyclictest31721-21ntp_states22:42:380
1717499371,9cyclictest31721-21ntp_states22:42:380
1717499371,8cyclictest24461-21chrt19:32:220
17174993714,20cyclictest0-21swapper/021:37:210
17174993714,20cyclictest0-21swapper/021:37:210
1717499371,33cyclictest9515-21if_eth020:17:350
1717499371,33cyclictest9515-21if_eth020:17:350
1717499371,10cyclictest32203-21/usr/sbin/munin00:12:360
1717499371,10cyclictest32203-21/usr/sbin/munin00:12:360
1717499371,10cyclictest20444-21users23:37:440
1717499371,10cyclictest20444-21users23:37:440
1717499371,10cyclictest13644-21cpuspeed23:22:340
1717499371,10cyclictest13644-21cpuspeed23:22:340
179622360,3sleep00-21swapper/023:32:380
179622360,3sleep00-21swapper/023:32:380
1717499368,26cyclictest6938-21gltestperf21:37:330
1717499368,26cyclictest6938-21gltestperf21:37:330
1717499366,6cyclictest25853-21wc21:02:270
1717499361,9cyclictest9282-21/usr/sbin/munin21:42:420
1717499361,9cyclictest9282-21/usr/sbin/munin21:42:420
1717499361,9cyclictest9282-21/usr/sbin/munin21:42:420
1717499361,9cyclictest749-21runrttasks20:08:360
1717499361,9cyclictest5214-21timerandwakeup22:57:440
1717499361,9cyclictest5214-21timerandwakeup22:57:440
1717499361,9cyclictest3503-21date00:22:260
1717499361,9cyclictest3503-21date00:22:260
1717499361,9cyclictest3029-21ntp_states22:52:380
1717499361,9cyclictest22336-21fschecks_count20:52:330
1717499361,9cyclictest22336-21fschecks_count20:52:330
1717499361,9cyclictest21619-21/usr/sbin/munin22:17:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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