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2025-08-26 - 16:36

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 792 highest latencies:
System rackfslot4s.osadl.org (updated Tue Aug 26, 2025 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3025121180,2chrt30250-21grep10:21:290
938121150,2sleep09382-21rm11:40:320
138921130,2chrt1390-21if_can011:26:010
875321120,2chrt8749-21ps12:37:080
517321110,1sleep05175-21swap11:32:170
3115221110,3chrt31148-21users08:21:270
2957321110,2chrt29574-21ssh09:22:050
2384221090,3chrt23845-21sleep10:10:170
42921080,1sleep0430-21open_files12:22:090
2724121030,3chrt27242-21ssh09:17:480
1743521030,2chrt17436-21sh09:00:130
71502930,2sleep07151-21cut12:35:040
153052920,1sleep015303-21fschecks_time11:50:510
115512920,2sleep011552-21ssh09:47:210
286562870,1sleep028654-21sshd11:16:260
90712820,1sleep09070-21uname10:41:070
294792790,1sleep029482-21latency_hist08:20:000
128722760,2sleep012870-21if_can008:50:420
180142730,2sleep018016-21wc10:00:060
248482710,1sleep024849-21cut11:10:330
217002690,2sleep021699-21ld12:01:520
24382660,2sleep02439-21uname07:25:460
70732560,1sleep07070-21forks11:36:240
26113905421,24cyclictest8241-21ntpq09:41:350
26113905224,21cyclictest20063-21basename09:05:280
26113905221,22cyclictest11607-21ssh10:46:060
26113905218,13cyclictest347-21ps08:25:420
284922510,3sleep028489-21ssh10:17:520
26113905119,23cyclictest27570-21ssh12:12:210
26113905119,22cyclictest14453-21/usr/sbin/munin07:50:470
26113905118,23cyclictest0-21swapper10:08:180
26113905118,22cyclictest859-21snmpd12:06:150
26113905117,14cyclictest6387-21memory10:36:150
26113905116,15cyclictest3422-21ntp_states08:31:170
181582510,2sleep018159-21cat11:55:570
26113905019,22cyclictest16344-21latency_hist10:55:040
26113905019,21cyclictest32724-21rm10:25:490
26113905018,23cyclictest20237-21memory11:01:150
26113905018,23cyclictest13108-21ntp_states07:46:140
26113905018,12cyclictest2652-21ntp_states09:31:590
184772500,3sleep018474-21ssh10:58:170
26113904926,14cyclictest23473-21ssh09:11:120
26113904926,13cyclictest28612-21ssh12:15:090
26113904922,9cyclictest31206-21sshd11:21:290
26113904918,22cyclictest13816-21ntpq09:51:420
26113904918,13cyclictest7918-21tr07:36:380
26113904918,12cyclictest2091-21df_inode12:25:400
26113904917,23cyclictest12582-21perl11:45:550
26113904917,22cyclictest3545-21irqstats10:31:120
26113904916,13cyclictest24893-21df_inode08:10:320
26113904824,16cyclictest4417-21df_inode07:30:270
26113904824,15cyclictest7324-21apt-get08:40:170
26113904818,21cyclictest22283-21cpu08:05:290
26113904815,14cyclictest886-21sh08:35:500
26113904724,14cyclictest15925-21ntpq08:56:010
26113904718,21cyclictest26449-21/usr/sbin/munin07:11:320
26113904718,20cyclictest10866-21ntpq08:45:580
26113904717,22cyclictest32307-21seq09:26:570
26113904717,22cyclictest18727-21/usr/sbin/munin10:01:000
26113904628,10cyclictest4180-21apt-get09:35:380
26113904621,15cyclictest21966-21apt-get11:05:190
26113904616,22cyclictest19654-21cut08:00:250
26113904615,22cyclictest31536-21/usr/sbin/munin07:20:270
26113904521,13cyclictest9417-21apt-get07:40:140
26113904519,16cyclictest28979-21apt-get07:15:190
2473624510,18sleep024745-21ntp_states07:05:530
26113904419,16cyclictest17304-21diskstats07:55:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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