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2026-05-01 - 15:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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: 50.5 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack5slot7s.osadl.org (updated Fri May 01, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21326224442202,96sleep00-21swapper07:07:300
216499916142,97cyclictest27324-21kernelversion07:40:390
216499916117,119cyclictest10280-21munin-run12:30:010
216499916021,97cyclictest18520-21apt-get10:00:120
216499916011,122cyclictest6645-21/usr/sbin/munin08:51:310
216499916010,126cyclictest5936-21wc12:00:530
216499915811,120cyclictest26322-21/usr/sbin/munin07:35:210
216499915732,21cyclictest16718-21grep09:46:030
216499915716,117cyclictest3954-21apt-get11:50:190
216499915713,121cyclictest14224-21apt-config09:35:070
216499915634,101cyclictest25430-21munin-plugin-st07:30:010
216499915629,23cyclictest25840-21expr10:45:230
216499915620,27cyclictest7164-21apt-get12:10:180
216499915619,98cyclictest5452-21munin-run12:00:030
216499915618,21cyclictest30234-21apt-get08:01:200
216499915612,120cyclictest24428-21latency_hist07:25:060
216499915610,124cyclictest11769-21tr09:20:020
216499915516,33cyclictest23550-21sshd07:16:510
216499915515,116cyclictest31453-21apt-get08:05:350
216499915514,118cyclictest2243-21munin-run11:40:020
216499915514,116cyclictest8076-21awk08:56:040
21649991549,27cyclictest24956-1kworker/u3:410:56:520
216499915411,117cyclictest2360-21/usr/sbin/munin11:40:490
216499915410,120cyclictest6654-21tr12:05:470
21649991539,120cyclictest3627-21cat08:30:520
21649991539,103cyclictest353-21awk11:25:530
216499915334,97cyclictest8201-21/usr/sbin/munin12:15:440
216499915316,37cyclictest25530-21apt07:30:120
216499915215,25cyclictest3279-21apt08:30:020
216499915215,113cyclictest9225-21apt-get09:05:190
216499915212,26cyclictest21188-21ntpq10:15:470
216499915212,116cyclictest19316-21apt-get10:05:200
216499915211,114cyclictest31068-21ntpq11:15:480
216499915122,27cyclictest4172-21/usr/sbin/munin08:36:090
216499915119,32cyclictest29978-21apt-get11:10:200
216499915117,28cyclictest15417-21df09:40:330
216499915116,28cyclictest11074-21munin-run12:35:000
216499915115,113cyclictest27239-21munin-run10:55:020
216499915114,114cyclictest5757-21sort08:45:050
216499915112,27cyclictest1289-21grep11:30:570
216499915112,26cyclictest9106-21sshd09:02:190
216499915014,114cyclictest30239-21munin-run08:00:060
216499915014,113cyclictest29876-21apt11:10:010
216499915013,24cyclictest28317-21wc07:45:540
216499915013,112cyclictest1439-21munin-run08:20:020
216499915012,39cyclictest15071-21cat09:37:030
216499915011,28cyclictest9474-21cron12:25:000
216499914919,40cyclictest11881-21munin-run12:40:020
216499914915,108cyclictest1556-21/usr/sbin/munin08:20:360
216499914912,112cyclictest23923-21grep10:30:590
216499914911,41cyclictest24120-21kworker/u2:1910:35:050
216499914910,114cyclictest11978-21df09:20:310
216499914819,26cyclictest10194-21irqstats09:10:370
216499914813,97cyclictest6508-21latency_hist08:50:060
216499914813,111cyclictest22027-21awk10:20:480
216499914812,96cyclictest272-21snmpd08:10:200
216499914812,38cyclictest22439-21munin-run07:15:030
216499914811,97cyclictest24960-21grep10:40:200
216499914811,27cyclictest20272-21/usr/sbin/munin10:10:360
216499914811,113cyclictest29260-21switchtime07:50:590
216499914727,21cyclictest0-21swapper09:50:210
216499914718,103cyclictest17698-21apt-get09:55:150
216499914711,113cyclictest3584-21find11:45:570
216499914617,21cyclictest0-21swapper09:25:230
216499914617,105cyclictest28503-21diskstats11:00:420
216499914611,113cyclictest31975-21wc11:20:530
216499914533,18cyclictest22903-21grep10:25:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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