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2026-09-22 - 10:57

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 Tue Sep 22, 2026 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318821130,4sleep02408-21/usr/sbin/munin22:29:440
154392950,2chrt15438-21if_eth000:29:390
93792880,4sleep20-21swapper/221:19:432
93792880,4sleep20-21swapper/221:19:432
93792880,4sleep20-21swapper/221:19:432
169302770,4chrt0-21swapper/021:39:430
169302770,4chrt0-21swapper/021:39:430
198682760,3sleep20-21swapper/200:39:462
198682760,3sleep20-21swapper/200:39:462
87742700,2sleep30-21swapper/322:44:423
87742700,2sleep30-21swapper/322:44:423
159002690,3chrt0-21swapper/323:04:363
159002690,3chrt0-21swapper/323:04:363
109342670,2chrt0-21swapper/321:24:383
294752610,3chrt0-21swapper/222:14:382
237092610,3chrt0-21swapper/323:24:423
237092610,3chrt0-21swapper/323:24:423
167622580,7chrt16764-21tail23:04:450
167622580,7chrt16764-21tail23:04:450
113402580,3sleep30-21swapper/300:19:373
113402580,3sleep30-21swapper/300:19:373
33852570,2chrt0-21swapper/221:04:392
33852570,2chrt0-21swapper/221:04:392
60002560,3sleep20-21swapper/221:09:462
60002560,3sleep20-21swapper/221:09:462
40492560,2chrt4029-21latency19:39:401
40492560,2chrt4029-21latency19:39:401
284062540,2chrt0-21swapper/020:44:390
284062540,2chrt0-21swapper/020:44:390
240322540,3sleep20-21swapper/221:59:392
240322540,3sleep20-21swapper/221:59:392
62902520,3sleep30-21swapper/319:44:453
73972490,3sleep30-21swapper/321:14:413
114552480,2chrt0-21swapper/221:24:452
175232450,4sleep20-21swapper/223:09:382
147822440,3sleep20-21swapper/220:09:362
26847994120,10cyclictest20776-21kworker/u9:0-xprtiod00:04:351
26847994120,10cyclictest20776-21kworker/u9:0-xprtiod00:04:351
26845994119,20cyclictest5345-21latency_hist00:04:290
26845994119,20cyclictest5345-21latency_hist00:04:290
26845994119,20cyclictest5345-21latency_hist00:04:290
242752410,2sleep30-21swapper/320:34:373
242752410,2sleep30-21swapper/320:34:373
2684799402,30cyclictest5719-21entropy00:04:381
2684799402,30cyclictest5719-21entropy00:04:381
261962400,2sleep00-21swapper/022:04:440
76632390,3chrt0-21swapper/322:42:453
76632390,3chrt0-21swapper/322:42:453
76632390,3chrt0-21swapper/322:42:453
26845993933,4cyclictest18368-21sensors_temp23:09:480
2685799383,28cyclictest5469-21chrt00:04:292
2685799383,28cyclictest5469-21chrt00:04:292
2685799383,28cyclictest5469-21chrt00:04:292
2686899371,28cyclictest5493-21chrt00:04:303
2686899371,28cyclictest5493-21chrt00:04:303
2686899371,28cyclictest5493-21chrt00:04:303
2684599372,31cyclictest6281-21grep00:04:440
2684599372,31cyclictest6281-21grep00:04:440
26845993528,5cyclictest22466-21fschecks_time20:29:370
26845993528,5cyclictest22466-21fschecks_time20:29:370
26845993526,6cyclictest19494-21fschecks_time23:14:360
26845993526,6cyclictest19494-21fschecks_time23:14:360
26845993428,4cyclictest1-21systemd21:14:440
211162340,4sleep30-21swapper/321:49:473
211162340,4sleep30-21swapper/321:49:473
26845993328,3cyclictest20789-21mailstats21:49:450
26845993328,3cyclictest20789-21mailstats21:49:450
26845993326,5cyclictest545-21in:imuxsock00:19:110
26845993326,5cyclictest545-21in:imuxsock00:19:110
26845993224,6cyclictest7716-21if_wlan019:49:380
26845993224,6cyclictest7716-21if_wlan019:49:380
26847993125,3cyclictest0-21swapper/100:24:241
26847993125,3cyclictest0-21swapper/100:24:241
26845993124,5cyclictest26844-21cyclictest00:42:270
26845993124,5cyclictest26844-21cyclictest00:42:270
26847993024,4cyclictest8886-21gltestperf21:19:371
26847993024,4cyclictest8886-21gltestperf21:19:371
26847993024,4cyclictest8886-21gltestperf21:19:371
26847993022,6cyclictest2317-21latency_hist22:29:301
26847993022,6cyclictest2317-21latency_hist22:29:301
26845993023,5cyclictest6279-21sshd21:11:450
26845993023,5cyclictest6279-21sshd21:11:450
26845993023,5cyclictest4303-21processes19:39:450
26845993023,5cyclictest4303-21processes19:39:450
26845993022,6cyclictest6092-21netstat19:44:420
26845993022,6cyclictest30700-21fschecks_time23:44:350
26845993021,7cyclictest21097-21netstat20:24:420
26845993021,7cyclictest21097-21netstat20:24:420
216382300,3sleep30-21swapper/323:19:403
216382300,3sleep30-21swapper/323:19:403
80042290,4sleep20-21swapper/221:14:482
26847992923,3cyclictest0-21swapper/120:49:241
26847992923,3cyclictest0-21swapper/120:49:241
26847992922,5cyclictest10214-21gltestperf22:49:391
26847992922,5cyclictest10214-21gltestperf22:49:391
26845992924,3cyclictest18521-21cpu20:19:350
26845992924,3cyclictest18521-21cpu20:19:350
26845992923,4cyclictest6286-21fschecks_count22:39:360
26845992923,4cyclictest6286-21fschecks_count22:39:360
26845992923,4cyclictest6286-21fschecks_count22:39:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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