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2026-07-04 - 17:16

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 376 highest latencies:
System rackfslot4s.osadl.org (updated Sat Jul 04, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2340821280,2sleep023409-21chrt08:11:090
797821240,3chrt7973-21ntpq07:46:210
751721240,2sleep07518-21seq11:05:360
70221200,2chrt698-21ntpq10:06:530
932121170,4chrt9201-21apt-get10:20:300
813121150,3chrt8132-21runrttasks10:18:010
1098621150,2sleep010987-21seq11:59:510
3219721130,2sleep032195-21interrupts08:25:430
2870621130,2chrt28697-21ps12:26:050
2232821130,2chrt22329-21sleep09:51:020
2061721130,1sleep020618-21chrt12:14:040
2980721110,2chrt29804-21http10:50:470
269121110,3chrt2692-21sh08:30:390
983321090,3chrt9834-21sleep07:50:220
1052521090,3chrt10524-21ssh09:33:060
1157921080,3chrt11580-21chrt09:35:190
2929221060,2sleep029294-21sort10:50:070
1699821060,3chrt16999-21sleep09:42:340
2154821050,2chrt21549-21cpu12:15:360
3028421030,2chrt30285-21sleep08:22:060
2463521020,2chrt24633-21/usr/sbin/munin11:31:040
67122940,2sleep06713-21chrt11:52:320
54062930,2sleep05408-21cut09:25:530
247612920,2sleep024760-21seq10:42:590
125472880,1sleep012549-21vmstat11:12:260
127792820,1sleep012780-21chrt08:46:150
255942810,1sleep025596-21sort08:15:270
37222770,2sleep03723-21sh12:37:120
18132770,1sleep01814-21ssh09:20:360
1719290777,59cyclictest31171-21apt-get12:30:260
278102750,1sleep027812-21grep09:10:540
1719290726,46cyclictest17736-21/usr/sbin/munin11:20:520
1719290725,47cyclictest32652-21apt-get10:55:300
169532720,1sleep016954-21seq08:00:500
146412720,1sleep014642-21chrt12:05:190
1719290714,57cyclictest31931-21ntpq09:16:330
1719290714,57cyclictest24547-21/usr/sbin/munin12:20:330
1719290714,57cyclictest21852-21ssh11:26:360
1719290714,57cyclictest1110-21sshd07:35:430
1719290714,48cyclictest436-21runrttasks11:40:130
17192907115,44cyclictest26658-21/usr/sbin/munin07:25:470
1719290705,55cyclictest14589-21/usr/sbin/munin08:50:500
1719290705,46cyclictest11927-21hddtemp_smartct12:00:570
1719290705,45cyclictest20775-21df_inode07:15:300
1719290705,44cyclictest4784-21ntp_states07:41:160
1719290704,57cyclictest20654-21sleep09:00:010
1719290704,56cyclictest25388-21ssh09:55:520
1719290704,47cyclictest20252-21munin-run07:15:010
1719290696,52cyclictest8392-21apt-get08:40:160
1719290695,55cyclictest20389-21memory10:36:180
1719290695,55cyclictest19608-21ssh09:46:350
1719290695,54cyclictest1749-21df_inode11:45:450
1719290695,52cyclictest13828-21apt-get11:15:260
1719290694,55cyclictest19412-21/usr/sbin/munin08:05:290
1719290694,48cyclictest28557-21awk10:00:340
1719290694,46cyclictest16328-21seq10:30:450
1719290694,45cyclictest22502-21ntpq09:01:560
1719290693,55cyclictest5538-21sleep11:02:060
1719290693,55cyclictest24136-21apt-get09:05:220
1719290686,53cyclictest12843-21/usr/sbin/munin07:55:260
1719290686,52cyclictest23557-21apt-get07:20:130
1719290684,56cyclictest2631-21basename10:10:320
1719290684,55cyclictest28107-21sed11:36:060
1719290683,56cyclictest12957-21cpuspeed10:25:420
1719290675,51cyclictest5259-21apt-get08:35:130
1719290674,54cyclictest436-21runrttasks07:33:430
1719290605,45cyclictest17142-21latency_hist07:10:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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