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2025-11-22 - 21:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #2

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 rack7slot2s.osadl.org (updated Sat Nov 22, 2025 00:48:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23164899283150,89cyclictest256979-21kworker/u9:8+rpciod22:26:250
23164899283150,89cyclictest256979-21kworker/u9:8+rpciod22:26:250
2316489928289,95cyclictest287098-21sshd23:52:060
2316489928289,95cyclictest287098-21sshd23:52:060
23164899282153,89cyclictest274858-21ssh22:56:180
23164899282153,89cyclictest274858-21ssh22:56:180
23164899280176,70cyclictest14-21ksoftirqd/020:31:570
23164899280176,70cyclictest14-21ksoftirqd/020:31:570
23164899277168,71cyclictest287990-21mailstats23:56:580
23164899277168,71cyclictest287990-21mailstats23:56:570
23164899277161,74cyclictest0-21swapper/019:11:160
2316489927587,99cyclictest0-21swapper/021:10:280
2316489927587,99cyclictest0-21swapper/021:10:270
23164899273163,72cyclictest256979-21kworker/u9:8+rpciod22:11:120
23164899273163,72cyclictest256979-21kworker/u9:8+rpciod22:11:120
23164899270158,55cyclictest260925-21ntp_states21:51:490
23164899270158,55cyclictest260925-21ntp_states21:51:480
23164899269190,66cyclictest258638-21ssh21:40:550
23164899269174,61cyclictest171rcu_preempt21:29:060
23164899269151,68cyclictest266291-21ntp_states22:16:340
23164899269151,68cyclictest266291-21ntp_states22:16:340
23164899268161,93cyclictest294220-21/usr/sbin/munin00:26:110
23164899268161,93cyclictest294220-21/usr/sbin/munin00:26:100
23164899268146,73cyclictest295758-21kworker/u9:7+xprtiod00:35:330
23164899268146,73cyclictest295758-21kworker/u9:7+xprtiod00:35:330
23164899266135,91cyclictest272141-21kworker/u9:8+rpciod23:02:030
23164899266135,91cyclictest272141-21kworker/u9:8+rpciod23:02:030
23164899263156,72cyclictest264098-21ntpq22:06:250
23164899263156,72cyclictest264098-21ntpq22:06:240
2316489926290,85cyclictest9250irq/88-eth%d19:16:590
23164899260160,64cyclictest251681-21grep21:10:000
23164899260160,64cyclictest251681-21grep21:10:000
23164899259189,59cyclictest231647-21cyclictest23:31:160
23164899259168,60cyclictest171rcu_preempt22:45:350
23164899258163,58cyclictest171rcu_preempt20:10:380
23164899257150,70cyclictest283545-21ssh23:36:370
23164899255185,58cyclictest234621-21ntp_offset19:26:200
23164899255164,61cyclictest278100-21ntp_kernel_pll_23:11:240
23164899255164,57cyclictest171rcu_preempt20:56:100
23164899255160,80cyclictest273924-21wc22:51:590
23164899255160,80cyclictest273924-21wc22:51:590
23164899254138,57cyclictest269956-21kworker/u9:5+rpciod22:35:050
23164899254138,57cyclictest269956-21kworker/u9:5+rpciod22:35:050
23164899253176,63cyclictest0-21swapper/000:20:010
23164899253167,72cyclictest293247-21ssh00:21:400
23164899253167,72cyclictest293247-21ssh00:21:400
23164899252146,74cyclictest235793-21kworker/u9:4-rpciod19:50:340
23164899252146,74cyclictest235793-21kworker/u9:4-rpciod19:50:340
23164899251169,69cyclictest240368-21/usr/sbin/munin20:00:470
23164899251158,63cyclictest259663-21memory21:45:490
23164899251158,63cyclictest259663-21memory21:45:480
23164899251133,103cyclictest0-21swapper/021:56:100
23164899251133,103cyclictest0-21swapper/021:56:100
23164899250175,62cyclictest285508-21kernelversion23:45:510
23164899250175,62cyclictest285508-21kernelversion23:45:500
23164899250150,71cyclictest237299-21/usr/sbin/munin19:41:540
23164899250150,71cyclictest237299-21/usr/sbin/munin19:41:540
23164899250130,105cyclictest0-21swapper/022:00:250
23164899249165,57cyclictest244654-21ntpq20:26:320
23164899248159,57cyclictest241354-21/usr/sbin/munin20:06:470
23164899248151,57cyclictest0-21swapper/021:31:570
23164899248151,57cyclictest0-21swapper/021:31:570
23164899247161,57cyclictest270366-21/usr/sbin/munin22:35:440
23164899246161,72cyclictest276742-21ssh23:05:190
23164899245159,58cyclictest267596-21/usr/sbin/munin22:22:040
23164899245157,76cyclictest280006-21cpu23:20:330
23164899245144,70cyclictest281425-21ssh23:26:510
23164899245144,70cyclictest281425-21ssh23:26:510
23164899245125,106cyclictest0-21swapper/020:50:420
23164899244158,72cyclictest271594-21collect222:41:010
23164899244141,38cyclictest295592-21timerandwakeup00:32:040
23164899243150,59cyclictest171rcu_preempt19:35:390
23164899243150,59cyclictest171rcu_preempt19:35:390
23164899243145,69cyclictest171rcu_preempt21:05:000
23164899243130,96cyclictest0-21swapper/020:16:310
23164899242159,53cyclictest171rcu_preempt20:21:580
23164899242158,55cyclictest253073-21df21:15:370
23164899242155,58cyclictest291184-21ps00:11:580
23164899242114,116cyclictest231647-21cyclictest19:25:010
23164899241170,57cyclictest0-21swapper/000:06:320
23164899241170,57cyclictest0-21swapper/000:06:320
23164899241169,59cyclictest278879-21ssh23:15:170
23164899241169,59cyclictest278879-21ssh23:15:160
23164899241131,95cyclictest0-21swapper/023:42:070
23164899241131,95cyclictest0-21swapper/023:42:070
23164899241124,102cyclictest0-21swapper/019:49:120
23164899241124,102cyclictest0-21swapper/019:49:110
23164899240154,73cyclictest254114-21ssh21:20:210
23164899240154,73cyclictest254114-21ssh21:20:210
23164899239155,71cyclictest247002-21/usr/sbin/munin20:40:420
23164899239155,71cyclictest247002-21/usr/sbin/munin20:40:420
23164899239155,57cyclictest235487-21ntp_states19:31:380
23164899238167,55cyclictest257498-21memory21:35:510
23164899238167,55cyclictest257498-21memory21:35:510
23164899237137,61cyclictest247890-21/usr/sbin/munin20:45:500
23164899237137,61cyclictest247890-21/usr/sbin/munin20:45:500
23164899237134,62cyclictest239514-21memory19:55:470
23164899237134,62cyclictest239514-21memory19:55:470
23165199235201,18cyclictest0-21swapper/322:13:383
23165199235201,18cyclictest0-21swapper/322:13:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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