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2023-02-05 - 22:34

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 
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ARM Freescale i.MX6UL @528 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50500000 -m -n -a0 -t1 -p99 -i396 -h400 -q
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 376 highest latencies:
System rack5slot7s.osadl.org (updated Sun Feb 05, 2023 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32583223902172,164sleep00-21swapper07:06:240
5819917521,124cyclictest25595-21diskstats09:35:470
5819916918,107cyclictest15359-21apt-get08:35:310
5819916520,114cyclictest1930-21diskstats07:16:000
5819916518,24cyclictest27903-21apt-get09:50:210
5819916515,125cyclictest30186-21users10:01:220
5819916417,118cyclictest18561-21apt-get12:11:460
5819916338,104cyclictest17409-21open_inodes12:01:180
5819916320,118cyclictest15298-21latency_hist08:35:070
5819916310,27cyclictest5751-21apt-get07:42:140
5819916119,29cyclictest22212-21diskstats12:30:420
5819916117,121cyclictest13437-21apt-get08:26:260
5819916115,26cyclictest12842-21df08:20:380
5819916114,120cyclictest17013-21apt-get08:45:260
5819916017,115cyclictest20508-21apt-get12:20:210
5819916016,119cyclictest16529-21ntp_states08:40:590
5819916016,119cyclictest11215-21df_inode08:10:380
5819916013,108cyclictest6741-21/usr/sbin/munin11:00:590
5819915918,117cyclictest12020-21diskstats08:15:400
5819915912,35cyclictest9044-21apt-get11:16:140
5819915817,23cyclictest28875-21irqstats09:55:530
5819915815,118cyclictest26308-21apt-get09:40:130
5819915736,22cyclictest8013-21mailstats11:06:090
5819915717,40cyclictest10903-21apt-get11:26:320
5819915715,39cyclictest3066-21grep10:36:090
5819915712,121cyclictest17875-21apt-get08:50:280
5819915711,119cyclictest25096-21awk09:31:070
5819915619,96cyclictest10483-21irqstats08:05:460
5819915619,28cyclictest13877-21memory11:40:560
5819915618,116cyclictest27214-21df_inode09:45:410
5819915617,99cyclictest19524-21munin-run09:00:020
5819915615,113cyclictest22897-21apt-get12:35:210
5819915522,111cyclictest12016-21apt-get11:30:240
5819915518,29cyclictest9624-21diskstats08:00:460
5819915514,38cyclictest17986-21/usr/sbin/munin12:05:450
5819915512,119cyclictest1475-21munin-node07:15:110
5819915419,27cyclictest4320-21apt-get10:45:310
5819915419,25cyclictest1207-21df_inode10:25:410
5819915416,114cyclictest15929-21apt-get11:56:200
5819915412,24cyclictest22940-21awk09:17:280
5819915412,120cyclictest3523-21sshd07:25:310
5819915411,117cyclictest9371-21cron08:00:010
581991539,41cyclictest8597-21grep11:11:060
5819915319,23cyclictest32633-21munin-run10:20:030
5819915316,96cyclictest5755-21munin-run07:40:030
5819915311,26cyclictest30535-21ls10:05:580
581991528,120cyclictest1894-21/usr/sbin/munin10:31:220
5819915216,113cyclictest8034-21/usr/sbin/munin07:51:300
5819915216,113cyclictest10905-21munin-run11:25:020
5819915214,37cyclictest6624-21munin-run11:00:040
5819915213,112cyclictest4907-21/usr/sbin/munin07:31:180
5819915120,106cyclictest31234-21diskstats10:10:470
5819915118,28cyclictest21345-21df09:10:400
5819915116,24cyclictest5229-21diskstats10:50:430
5819915115,28cyclictest12919-21df_inode11:35:420
5819915115,23cyclictest15405-21awk11:50:490
5819915115,19cyclictest0-21swapper11:46:020
5819915111,21cyclictest19676-21apt-get12:15:220
5819915111,100cyclictest21595-21ntp_kernel_pll_12:26:010
5819915010,26cyclictest32750-21munin-node10:20:120
5819914919,28cyclictest7126-21memory07:46:030
5819914918,25cyclictest2752-21df07:20:360
5819914914,22cyclictest24583-21munin-run09:30:010
5819914814,112cyclictest23089-21apt-get09:20:240
5819914813,25cyclictest3519-21/usr/sbin/munin10:41:180
5819914716,25cyclictest19745-21df09:00:370
5819914710,111cyclictest20768-21awk09:06:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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