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2022-07-07 - 00:21

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 
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ARM Broadcom BCM2711 @1500 MHz, Linux 5.10.52-rt47-v7l (Profile)

Latency plot of shadow in rack #7, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 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 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack7slot2s.osadl.org (updated Wed Jul 06, 2022 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
525921960,2sleep10-21swapper/107:06:461
2154421550,2sleep30-21swapper/309:46:473
1105021160,3sleep20-21swapper/209:11:502
213772910,9sleep121-21ksoftirqd/109:46:451
638899900,56cyclictest6801-21apt-get12:31:423
6388998521,62cyclictest33-21ksoftirqd/307:56:413
638899781,2cyclictest0-21swapper/307:21:413
638899781,27cyclictest0-21swapper/307:51:443
177162770,3chrt17105-21/usr/sbin/munin07:46:490
638899761,2cyclictest0-21swapper/308:13:353
638899751,71cyclictest7255-21/usr/sbin/munin10:46:443
638899751,71cyclictest6395-21latency_hist07:11:303
638899751,71cyclictest0-21swapper/312:08:083
638899741,70cyclictest3533-21ntp_states08:46:503
638899741,70cyclictest26736-21taskset11:51:113
638899741,70cyclictest26736-21taskset11:51:113
638099741,9cyclictest17339-21needreboot11:18:302
638899731,68cyclictest18207-21cpuspeed09:36:423
638899730,69cyclictest16655-21chrt07:43:433
638899721,68cyclictest12730-21fschecks_count07:31:463
638899721,68cyclictest12730-21fschecks_count07:31:463
638899721,67cyclictest18545-21latency_hist07:51:303
638899711,67cyclictest1220-21ntp_kernel_err12:11:493
638899711,67cyclictest0-21swapper/308:53:243
638899711,67cyclictest0-21swapper/308:53:243
638899711,67cyclictest0-21swapper/308:26:353
638899711,66cyclictest20964-21cat09:46:303
638899711,2cyclictest0-21swapper/310:14:533
638899710,41cyclictest31410-21needreboot10:18:363
638899701,66cyclictest687-21runrttasks10:58:173
638899701,66cyclictest28001-21ntp_states10:07:203
638899701,66cyclictest0-21swapper/311:32:003
638899701,66cyclictest0-21swapper/311:16:533
638899701,66cyclictest0-21swapper/311:12:193
638899701,66cyclictest0-21swapper/310:23:173
638899701,66cyclictest0-21swapper/309:00:593
638899701,66cyclictest0-21swapper/308:36:433
638899701,66cyclictest0-21swapper/308:31:433
638899701,65cyclictest25134-21sshd11:45:063
638899701,65cyclictest25134-21sshd11:45:063
638899701,65cyclictest0-21swapper/308:21:453
638899701,65cyclictest0-21swapper/308:21:453
638899701,2cyclictest0-21swapper/311:01:433
638899701,2cyclictest0-21swapper/310:51:503
638899701,2cyclictest0-21swapper/307:11:443
179512700,2sleep117827-21/usr/sbin/munin11:21:451
638899691,65cyclictest7579-21apt-get09:01:403
638899691,65cyclictest17536-21vmstat09:31:533
638899691,65cyclictest0-21swapper/311:56:113
638899691,65cyclictest0-21swapper/308:44:113
638899691,2cyclictest0-21swapper/312:20:293
638899691,2cyclictest0-21swapper/311:21:503
638899691,2cyclictest0-21swapper/309:21:593
638899690,66cyclictest20256-21taskset11:27:003
638899690,66cyclictest1646-21awk10:26:493
638899690,66cyclictest10591-21apt-get09:11:423
636399691,33cyclictest0-21swapper/008:11:410
110899690,22rtkit-daemon0-21swapper/212:35:380
638899681,64cyclictest0-21swapper/310:06:303
638899681,64cyclictest0-21swapper/308:16:403
638899681,63cyclictest0-21swapper/307:28:093
638899681,2cyclictest0-21swapper/312:25:143
638899681,2cyclictest0-21swapper/309:18:073
638899681,2cyclictest0-21swapper/308:02:323
638899680,2cyclictest0-21swapper/311:09:493
638099681,3cyclictest0-21swapper/212:06:492
638899671,63cyclictest0-21swapper/307:37:593
638899671,2cyclictest0-21swapper/309:51:453
638899671,2cyclictest0-21swapper/309:06:433
638899671,2cyclictest0-21swapper/308:06:413
638899670,3cyclictest30025-21apt-get12:01:433
638099671,30cyclictest29082-21ntpq11:56:492
638099671,30cyclictest29082-21ntpq11:56:492
638099671,18cyclictest9292-21/usr/sbin/munin10:51:512
638099671,13cyclictest0-21swapper/210:18:162
638099670,6cyclictest7907-21wc07:16:302
636399671,20cyclictest20712-21sed07:56:500
638899661,2cyclictest0-21swapper/312:39:503
638899661,2cyclictest0-21swapper/307:17:083
638099663,59cyclictest20057-21cut09:41:482
638099661,17cyclictest0-21swapper/210:06:592
638099660,6cyclictest22768-21taskset08:04:472
636399661,44cyclictest2854-21fschecks_time10:31:470
638899651,61cyclictest0-21swapper/311:37:153
638899651,2cyclictest0-21swapper/310:36:523
638899650,4cyclictest5637-21apt-get10:41:413
638099651,3cyclictest0-21swapper/212:01:492
638899641,60cyclictest0-21swapper/312:00:333
638899641,60cyclictest0-21swapper/312:00:333
638099640,26cyclictest687-21runrttasks11:43:552
638099640,26cyclictest687-21runrttasks11:43:552
636399641,23cyclictest22224-21awk08:01:490
638899630,2cyclictest5284-21apt-get12:26:423
638099630,9cyclictest9631-21awk09:06:492
638899621,2cyclictest0-21swapper/310:31:523
638899621,2cyclictest0-21swapper/309:26:503
638099621,11cyclictest0-21swapper/209:01:462
637199621,5cyclictest22345-21kworker/1:110:36:311
636399622,10cyclictest20407-21kworker/u8:208:31:430
59152626,29sleep00-21swapper/007:07:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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