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2025-09-15 - 20:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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: 50 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 rack4slot6s.osadl.org (updated Mon Sep 15, 2025 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1494321460,4chrt14944-21latency12:05:140
2011921380,3chrt20117-21interrupts12:25:190
506921300,3chrt5071-21wc09:20:010
799521270,2sleep07993-21if_err_eth007:25:190
801321240,3sleep08015-21find11:35:260
1738321210,2sleep017382-21timerwakeupswit10:05:320
1042621040,3sleep010465-21/usr/sbin/munin09:40:170
223172960,3sleep022381-21ntp_kernel_pll_08:20:210
3900999361,17cyclictest29975-21ntpq10:55:210
3900999265,15cyclictest27217-21df_inode10:45:170
3900999263,16cyclictest22154-21chrt12:32:490
3900999062,16cyclictest26196-21proc_pri10:40:250
3900999061,17cyclictest29855-21/usr/sbin/munin08:50:330
3900998965,15cyclictest9951-21runrttasks07:31:530
3900998860,16cyclictest25547-21seq08:32:330
3900998859,15cyclictest22189-21snmpd08:45:140
3900998762,15cyclictest4666-21chrt11:23:010
3900998761,14cyclictest13974-21cat12:00:010
3900998758,15cyclictest21204-21sendmail_mailqu08:15:290
261222870,3sleep026150-21cat08:35:190
3900998663,15cyclictest13606-21timerwakeupswit07:45:260
3900998661,17cyclictest24128-21runrttasks08:26:250
3900998661,14cyclictest27583-21ntp_states08:40:250
3900998659,15cyclictest10091-21runrttasks09:39:130
3900998658,19cyclictest13056-21/usr/sbin/munin09:50:150
3900998655,19cyclictest8018-21/usr/sbin/munin09:30:190
3900998561,13cyclictest16528-21chrt10:03:490
3900998557,15cyclictest17718-21runrttasks08:01:500
39012840,2sleep03903-21date07:10:010
3900998463,12cyclictest269-21runrttasks07:16:530
3900998461,14cyclictest11686-21df09:45:140
3900998459,14cyclictest22207-21sort10:25:210
3900998459,14cyclictest20007-21chrt10:15:410
3900998459,13cyclictest16802-21munin-run08:00:010
3900998457,14cyclictest31110-21forks11:00:170
3900998455,16cyclictest23270-21/usr/sbin/munin10:30:300
3900998455,15cyclictest2722-21irqstats09:10:190
3900998446,23cyclictest14471-21ntpq09:55:220
3900998360,13cyclictest2495-21date09:10:010
3900998358,16cyclictest23726-21munin-run12:40:010
3900998358,15cyclictest12697-21grep11:55:020
3900998357,15cyclictest6612-21awk09:25:170
3900998357,15cyclictest108-21systemd-journal10:36:050
3900998356,15cyclictest7583-21chrt07:23:330
3900998352,18cyclictest5733-21sshd11:26:130
3900998259,14cyclictest2746-21/usr/sbin/munin11:15:250
3900998259,13cyclictest20737-21latency_hist08:15:020
3900998258,14cyclictest32377-21df_inode11:05:140
3900998258,14cyclictest29424-21seq10:53:410
3900998257,15cyclictest9180-21/usr/sbin/munin11:40:220
3900998159,13cyclictest10904-21seq11:46:170
3900998156,15cyclictest5237-21df09:20:140
3900998148,19cyclictest18699-21/usr/sbin/munin12:20:310
3900998147,22cyclictest6326-21/usr/sbin/munin11:30:120
3900998056,14cyclictest14682-21munin-run12:05:010
3900998055,15cyclictest31397-21/usr/sbin/munin08:55:210
3900998054,15cyclictest16926-21seq12:12:210
3900998051,16cyclictest11624-21cron07:40:000
3900998044,21cyclictest17634-21ntpq12:15:210
3900997956,15cyclictest20886-21memory10:20:180
3900997955,13cyclictest18976-21chrt08:06:370
3900997954,15cyclictest14635-21ntp_states07:50:250
3900997954,15cyclictest12057-21ntp_states07:40:210
3900997954,14cyclictest32507-21df_inode09:00:140
3900997856,13cyclictest18623-21sort10:10:290
3900997855,14cyclictest22189-21snmpd07:14:010
3900997854,14cyclictest1752-21users11:10:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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