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2025-11-03 - 04:54

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 the 100 highest latencies:
System rackfslot4s.osadl.org (updated Mon Nov 03, 2025 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2480221210,3chrt24803-21sleep22:05:010
1465221180,3chrt14653-21ntpq23:41:410
401721090,2chrt4018-21ssh22:25:300
1439421090,3chrt14393-21sshd19:42:160
2501421080,2chrt25015-21sleep22:05:110
2010921040,3chrt20110-21sleep19:53:350
223022900,2sleep022303-21tune2fs23:55:540
177202750,1sleep017723-21wc22:50:050
50262730,2sleep05028-21tail23:25:350
214782720,1sleep021479-21sh23:54:260
212182720,2sleep021219-21cat21:57:580
84612670,2sleep08464-21sed19:30:500
320252620,1sleep032027-21ntp_kernel_pll_22:16:310
139192604,9sleep013940-21cut21:45:500
135642583,9sleep013580-21ssh22:41:490
4122574,44sleep0459-21/usr/sbin/munin19:15:400
288552570,3chrt28853-21/usr/sbin/munin22:11:390
206092574,6sleep020550-21apt-get22:55:280
299382560,1sleep029944-21cut21:16:080
63832543,9sleep06387-21df00:25:410
103012532,8sleep010323-21ps00:32:140
76842523,42sleep07686-21python320:32:180
196532523,8sleep019655-21memory20:55:470
324732510,2sleep032521-21fschecks_time21:20:550
262522510,3chrt26250-21/usr/sbin/munin00:02:160
133612513,8sleep013364-21ssh00:37:280
93322503,40sleep09337-1kworker/u3:221:37:030
123522500,3sleep012336-21ssh23:37:210
29748904819,22cyclictest0-21swapper21:13:060
29748904818,23cyclictest0-21swapper23:18:310
29748904817,23cyclictest0-21swapper23:09:430
29748904718,14cyclictest0-21swapper23:47:510
29748904717,22cyclictest0-21swapper00:18:400
2809224712,20sleep028095-21irqstats19:05:340
29748904617,20cyclictest0-21swapper21:43:020
29748904617,15cyclictest0-21swapper21:53:580
198852460,2chrt19878-21ssh22:53:280
2974890459,29cyclictest0-21swapper00:13:020
29748904520,18cyclictest0-21swapper23:03:430
29748904518,20cyclictest0-21swapper19:14:210
29748904514,24cyclictest0-21swapper23:14:300
38292440,3chrt3832-21switchtime23:22:240
2974890446,20cyclictest28555-21ntpq00:06:270
29748904420,15cyclictest0-21swapper00:23:100
29748904411,24cyclictest0-21swapper19:25:410
12112442,5sleep01205-21ssh22:20:200
2974890436,10cyclictest3983-21users19:21:290
2974890434,19cyclictest23005-21munin-run20:00:020
2974890434,18cyclictest28674-21perl20:10:360
29748904318,17cyclictest0-21swapper20:40:320
29748904315,21cyclictest0-21swapper22:38:180
29748904314,22cyclictest0-21swapper23:34:360
2974890427,27cyclictest5515-21df_inode21:30:430
2974890425,9cyclictest3660-21ntpq21:26:500
2974890425,28cyclictest7822-21ssh22:31:280
2974890416,9cyclictest9477-21/usr/sbin/munin20:35:460
2974890415,27cyclictest1151-21df20:20:300
2974890414,18cyclictest12444-21munin-run19:40:010
29748904114,8cyclictest24784-21ntpq21:05:530
2974890405,10cyclictest15363-21/usr/sbin/munin19:46:330
2974890404,17cyclictest21619-21df_inode21:00:300
2974890394,8cyclictest4333-21ntpq20:25:520
2974890394,8cyclictest14835-21ntpq20:46:100
2974890393,19cyclictest31262-21if_err_can020:15:400
2974890388,20cyclictest16240-21apt-get20:50:210
2974890388,10cyclictest27862-21sshd20:09:150
2974890386,12cyclictest24214-21ntpq20:01:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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