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2026-04-07 - 05:54

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 all highest latencies:
System rackfslot4s.osadl.org (updated Tue Apr 07, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2926921240,3chrt27699-21apt-get23:36:480
3107721230,2chrt31079-21awk00:27:250
312721210,2chrt3126-21/usr/sbin/munin22:57:190
2192621200,2chrt21927-21seq23:25:590
1776621200,2chrt17721-21munin-run23:20:020
526421180,2sleep05278-21awk00:37:240
189521180,2sleep01897-21sort00:32:200
116321180,3chrt1164-21sleep23:42:540
2421921170,2chrt24214-21users00:17:220
1934821170,2chrt19349-21/usr/sbin/munin19:11:290
2629521160,2sleep026296-21seq23:32:150
426421150,3chrt4265-21modprobe23:47:240
1249021150,2chrt12489-21/usr/sbin/munin00:00:340
1931021130,3chrt19308-21idleruntime20:55:390
2003521120,3chrt20038-21modprobe22:35:000
2331121110,2sleep023312-21runrttasks22:39:310
1204921110,1sleep012051-21runrttasks22:22:150
1104521090,2sleep011046-21ls21:32:270
3211521050,3chrt32116-21runrttasks22:04:250
125921040,3chrt1260-21sh21:17:530
2874021030,1sleep028741-21chrt00:24:460
2724121030,4chrt27242-21sh21:08:110
122442990,3chrt12245-21sh20:44:400
81892900,2sleep08190-21hostname23:05:340
237202880,2sleep023723-21kernelversion20:10:460
29092870,2sleep02910-21apt-key20:30:090
239902830,2sleep023991-21cut22:40:340
235312830,1sleep023532-21cat21:01:310
1760190806,11cyclictest8108-21ntpq22:16:160
76602780,2sleep07662-21chrt23:04:520
65692760,2sleep06570-21cat21:26:150
250692760,2sleep025070-21seq21:53:390
17601907513,52cyclictest32245-21python322:52:180
17601907510,46cyclictest7315-21runrttasks00:07:250
1760190745,59cyclictest14062-21ntp_states21:37:050
1760190736,57cyclictest6815-21ntpq23:51:210
1760190736,11cyclictest30306-21ntp_states20:21:130
1760190736,11cyclictest28334-21ssh21:58:270
1760190735,58cyclictest20501-21ssh23:23:450
17601907311,53cyclictest13712-21fschecks_time19:55:340
140542730,2sleep014055-21seq22:25:460
137262730,2sleep013728-21seq23:13:300
279472720,1sleep027951-21irqrtprio22:46:040
1760190727,9cyclictest21116-21ntpq20:06:380
1760190726,12cyclictest20606-21ntpq21:46:430
1760190726,11cyclictest29177-21irqstats21:11:110
1760190725,57cyclictest19545-21hddtemp_smartct00:10:580
1760190725,56cyclictest934-21df_inode22:06:140
1760190725,12cyclictest32144-21apt-get20:25:190
17601907216,48cyclictest7315-21runrttasks19:46:020
1760190716,9cyclictest3691-21ssh21:21:310
1760190716,10cyclictest5936-21apt-get20:35:480
1760190714,9cyclictest4289-21df_inode19:40:290
1760190707,10cyclictest9482-21perl23:55:510
1760190707,10cyclictest18234-21ntpq20:02:120
1760190706,12cyclictest17462-21ntp_states21:42:070
1760190704,56cyclictest28834-21kworker/u2:322:10:500
1760190704,11cyclictest31149-21memory19:30:490
1760190704,11cyclictest1145-21df19:35:270
1760190704,10cyclictest22749-21sshd19:17:120
1760190696,9cyclictest28402-21ntpq19:26:200
1760190696,9cyclictest17630-21date19:10:030
1760190695,9cyclictest23974-21apt-get19:20:160
1760190695,9cyclictest16990-21ntpq20:51:240
1760190694,9cyclictest10516-21diskstats19:50:320
125962690,2sleep012597-21chrt20:45:170
17601906811,49cyclictest26547-21if_eth120:15:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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