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2026-07-25 - 12:03

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 Sat Jul 25, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3121821290,2chrt31219-21runrttasks21:05:070
415121270,2chrt4152-21runrttasks23:39:050
766821240,2sleep07669-21seq20:26:210
2936921230,2chrt29367-21ntpq21:01:150
430721210,2chrt4302-21smartctl00:27:290
2376521190,3chrt23763-21fw_packets20:00:370
70121160,3chrt702-21sleep23:33:460
824021150,2sleep08241-21seq21:18:520
316321150,2chrt3164-21runrttasks22:48:340
2555321150,3chrt25554-21if_eth019:11:320
199721150,2chrt1998-21runrttasks21:57:380
1367821150,2chrt13681-21chrt20:36:020
505921140,3chrt5060-21sleep22:02:150
1567821140,2chrt15677-21sshd21:30:270
3147821130,3chrt31479-21if_eth019:20:400
1262221130,3chrt12623-21runrttasks22:14:130
324221100,3chrt3243-21sleep19:26:450
3188521100,3chrt31884-21seq21:54:260
3097221080,2sleep030976-21missed_timers22:41:160
1164121080,3chrt11642-21awk23:50:200
1149021080,2chrt11491-21sleep20:32:370
1442321070,3chrt14424-21sleep23:05:510
1794121060,2chrt17942-21ssh23:11:000
2479721040,2chrt24798-21sleep00:10:070
2097921040,2chrt20980-21chrt00:04:140
1874021020,2sleep018743-21ssh22:22:590
1732821010,2sleep017329-21seq20:41:320
176092980,1sleep017610-21rm23:59:080
142692960,2sleep014270-21chrt19:45:300
227862930,1sleep022787-21seq23:17:490
219162930,2sleep021918-21chrt21:39:480
58062920,2sleep05807-21cat22:52:220
71482900,2sleep07150-21grep22:05:540
253122850,2sleep025313-21sh23:21:360
176812830,2sleep017680-21cat19:50:420
86612820,2chrt8635-21ntpq22:56:360
122012800,1sleep012203-21latency_hist00:40:050
271302770,2sleep027131-21smartctl22:36:000
2163427410,47sleep021723-21perl19:05:320
44752720,1sleep04476-21seq20:21:090
81492670,2sleep08150-21seq23:45:230
69742660,2sleep06971-21ntp_kernel_pll_00:31:250
50872660,2sleep05090-21rm21:14:400
107802660,2sleep010782-21awk23:00:320
230472630,2sleep023049-21wc22:30:050
150212583,8sleep015026-21runrttasks21:29:110
229292570,2sleep022931-21if_err_can021:40:580
17642570,4chrt1765-21sh00:24:050
276612555,7sleep027668-21ntpq20:06:190
53182540,1sleep05315-21tune2fs23:40:520
212262533,8sleep021236-21ntpq19:55:590
267102520,2sleep026735-21seq21:46:430
132822510,2sleep013273-21ssh22:15:310
115432513,8sleep011538-21ssh21:23:470
84072500,3sleep08406-21seq19:35:440
122082500,2chrt12206-21/usr/sbin/munin19:41:220
283432460,2sleep028345-21sed23:26:100
2428590456,12cyclictest29168-21irqstats00:16:060
230522453,7sleep023054-21ssh00:06:540
257192430,4chrt25718-21sed20:55:450
24285904313,23cyclictest29454-21apt-get20:10:190
2428590414,19cyclictest23358-21python320:51:260
2428590404,20cyclictest25556-21rm22:33:210
24285904019,14cyclictest0-21swapper20:45:230
24285903911,11cyclictest11-21ksoftirqd/019:30:350
299602372,8sleep00-21swapper19:18:070
24285903712,9cyclictest1404-21ntp_states20:16:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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