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2025-11-17 - 04:17

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 792 highest latencies:
System rack4slot6s.osadl.org (updated Mon Nov 17, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2212222630,3sleep022125-21wc19:20:240
1642221660,2sleep016423-21latency_hist21:05:010
2721621340,2sleep027218-21find21:45:280
1174921300,3chrt11747-21swap20:45:270
190759912234,76cyclictest5241-21/usr/sbin/munin20:20:270
19075991199,16cyclictest32469-21processes20:00:290
190759911931,75cyclictest24488-21/usr/sbin/munin21:35:240
19075991188,15cyclictest26113-21sshd23:46:340
190759911814,12cyclictest28469-21netstat19:45:210
19075991179,16cyclictest23959-21munin-run23:40:020
19075991178,16cyclictest22189-21snmpd19:37:130
19075991168,17cyclictest29559-21/usr/sbin/munin19:50:130
19075991168,15cyclictest12703-21/usr/sbin/munin20:50:180
19075991168,13cyclictest26666-21/usr/sbin/munin23:50:250
190759911630,74cyclictest108-21systemd-journal22:41:480
2868621150,3sleep028688-21users21:50:310
19075991159,16cyclictest9876-21grep20:40:010
19075991159,16cyclictest18806-21sendmail-msp23:20:010
19075991158,15cyclictest3695-21ntp_states22:20:210
19075991158,13cyclictest226282sleep021:28:380
19075991157,16cyclictest29562-21ntpq00:00:260
19075991157,16cyclictest1359-21seq00:16:170
19075991157,15cyclictest5986-21/usr/sbin/munin22:30:370
19075991156,15cyclictest20729-21/usr/sbin/munin23:25:300
190759911522,16cyclictest19481-21cat23:20:290
190759911510,17cyclictest6409-21ntp_states20:25:260
190759911510,13cyclictest30799-21/usr/sbin/munin19:55:210
19075991149,16cyclictest25436-21chrt19:34:300
19075991149,16cyclictest2011-21runrttasks20:09:210
19075991149,15cyclictest18039-21ntp_states21:10:250
19075991148,15cyclictest15621-21cat23:05:330
19075991147,13cyclictest24424-21pluginstate23:40:250
190759911411,19cyclictest30551-21/usr/sbin/munin00:05:330
19075991139,17cyclictest29071-21sshd23:59:480
19075991139,15cyclictest13049-21seq22:55:370
19075991138,16cyclictest1966-21latency_hist22:15:010
19075991138,15cyclictest21566-21df_inode23:30:170
19075991138,13cyclictest21329-21chrt19:17:370
19075991137,16cyclictest19354-21sort19:10:210
190759911328,73cyclictest108-21systemd-journal20:58:480
190759911323,13cyclictest31018-21seq22:00:280
190759911310,18cyclictest27199-21netstat19:40:250
190759911310,17cyclictest9860-21/usr/sbin/munin22:45:200
190759911310,15cyclictest29976-21users21:55:330
19075991129,22cyclictest7400-21/usr/sbin/munin20:30:320
19075991129,13cyclictest3403-21irqstats00:25:170
19075991129,12cyclictest3651-21irqstats20:15:180
19075991128,16cyclictest2356-21cat20:10:170
19075991128,15cyclictest14567-21runrttasks23:02:180
19075991128,15cyclictest12332-21date22:55:010
19075991127,14cyclictest23209-21irqstats19:25:170
190759911212,21cyclictest10188-21memory20:40:210
19075991118,24cyclictest24094-21/usr/sbin/munin21:35:010
19075991118,13cyclictest6874-21seq00:39:100
19075991118,12cyclictest32126-21ntp_states00:10:260
19075991117,15cyclictest2440-21ps22:15:250
19075991117,14cyclictest5883-21latency_hist22:30:020
190759911119,15cyclictest370-21ntpd00:20:290
19075991109,18cyclictest4552-21/usr/sbin/munin00:30:300
19075991109,15cyclictest26120-21users21:40:310
19075991108,14cyclictest21059-21seq21:21:170
19075991108,14cyclictest17483-21munin-run23:15:020
19075991108,13cyclictest7407-21/usr/sbin/munin22:35:180
19075991107,16cyclictest32618-21runrttasks22:05:450
19075991097,13cyclictest17228-21seq21:06:530
190759910911,16cyclictest19233-21memory21:15:220
190759910514,76cyclictest19077-21latency_hist19:10:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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