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2026-06-10 - 22:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, 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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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackfslot4s.osadl.org (updated Wed Jun 10, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2474921320,2chrt24745-21hddtemp_smartct08:45:370
3136921270,3chrt31370-21runrttasks10:34:240
554121240,3chrt5535-21ntpq09:06:200
3099621240,2chrt30997-21aten2.4_rfpower09:45:340
2465321210,3chrt24654-21/usr/sbin/munin11:12:180
1581321210,3chrt15815-21if_eth010:11:020
1430721210,2chrt14309-21hostname09:20:340
2361021200,3chrt23606-21ps10:22:110
555221190,2sleep05551-21seq10:43:570
2272521170,2sleep022728-21timerwakeupswit08:41:270
791821150,2chrt7919-21ld07:26:060
1730821110,3chrt17309-21chrt12:39:230
1655621100,2sleep016557-21perl07:40:340
97221070,2sleep0973-21chrt12:14:590
1973521070,2chrt19736-21seq07:45:420
2322321050,2chrt23224-21sleep11:59:480
1559521050,1sleep015596-21chrt10:59:150
953621040,2chrt9537-21runrttasks09:12:490
2658221040,3chrt26583-21runrttasks09:38:340
2508821030,2sleep025089-21chrt12:01:530
717021010,4chrt7174-21sed10:46:050
415321010,2chrt4154-21sh09:53:300
287312990,2sleep028733-21seq08:00:250
62372950,2sleep06235-21irqstats08:15:460
129442940,2sleep012945-21chrt09:17:560
208902900,1sleep020891-21seq10:18:100
177272870,1sleep017729-21irqrtprio11:51:040
119792870,2sleep011981-21cut10:05:360
102902790,2sleep010291-21chrt11:40:160
206602760,2sleep020661-21date09:30:050
168582710,1sleep016859-21if_err_can011:00:580
21322700,1sleep02136-21irqrtprio12:16:070
233292690,2sleep023330-21ssh09:33:450
206622680,2sleep020663-21seq11:06:150
26822670,2sleep02683-21basename10:40:010
222742660,2sleep022275-21chrt07:50:130
85662640,1sleep08622-21aten2.4_rfpower08:20:250
191322640,2sleep019135-21ntp_kernel_pll_08:36:010
274502620,2sleep027452-21tail08:50:220
29497905835,15cyclictest5226-21/usr/sbin/munin07:21:290
29497905825,24cyclictest3120-21irqstats08:10:440
29497905825,23cyclictest29509-21rm11:20:230
29497905727,20cyclictest1205-21hddtemp_smartct07:16:110
29497905726,21cyclictest32561-21munin-run07:15:050
29497905726,12cyclictest9715-21aten2.4_rfpower10:50:330
29497905724,22cyclictest28358-21rm12:06:490
278802570,2sleep027881-21sendmail_mailst11:17:140
29497905625,22cyclictest8831-21ssh10:00:470
29497905625,11cyclictest11868-21sh08:25:220
29497905624,22cyclictest27496-21ssh09:40:250
276542560,2sleep027655-21seq10:28:260
29497905531,14cyclictest8532-21ntp_states11:37:030
29497905529,16cyclictest7836-21apt-get12:25:180
29497905526,12cyclictest5499-21fschecks_count09:55:510
29497905523,13cyclictest10727-21kernelversion07:30:450
54122540,1sleep05448-21seq11:32:150
29497905432,13cyclictest461-21ntpq08:06:190
29497905431,15cyclictest2960-21seq11:28:570
29497905430,15cyclictest11151-21apt-get12:30:180
29497905423,12cyclictest14367-21/usr/sbin/munin11:46:040
29497905422,12cyclictest16189-21ntp_states08:31:160
29497905331,14cyclictest6044-21sh12:21:480
29497905330,14cyclictest13486-21if_can007:35:390
29497905328,17cyclictest26056-21ps07:55:430
29497905323,22cyclictest1151-21seq09:00:180
29497905233,13cyclictest30868-21cut08:55:340
278282518,19sleep027858-21python307:06:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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