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2022-08-13 - 02:19

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 highest latencies:
System rack5slot7s.osadl.org (updated Fri Aug 12, 2022 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1274224472195,88sleep00-21swapper07:06:340
17109916017,24cyclictest3054-21df_inode07:15:550
17109916012,120cyclictest28830-21munin-plugin-st09:50:010
17109915940,98cyclictest2345-21threads07:11:090
17109915929,23cyclictest22176-21ls09:10:340
17109915913,123cyclictest23183-21snmpd10:57:040
17109915811,123cyclictest7271-21sendmail07:40:010
17109915776,34cyclictest20007-21apt-get08:57:040
17109915716,22cyclictest20598-21munin-run12:15:010
17109915715,97cyclictest25428-21apt-get09:31:430
17109915713,119cyclictest24419-21apt-get09:26:010
1710991568,26cyclictest6272-21sort10:50:040
17109915610,125cyclictest10875-21wc08:00:550
17109915541,22cyclictest13756-21latency_hist08:20:050
17109915522,30cyclictest29940-21apt-get09:55:400
17109915518,113cyclictest14283-21memory11:35:520
17109915512,120cyclictest17333-21sed11:52:180
17109915511,105cyclictest8784-21grep11:01:270
17109915431,19cyclictest0-21swapper12:25:000
17109915417,111cyclictest2581-21memory10:25:560
17109915414,26cyclictest15433-21/usr/sbin/munin08:31:110
17109915413,118cyclictest23601-21munin-run09:20:030
17109915413,117cyclictest24733-21grep12:40:060
17109915412,23cyclictest25009-1kworker/u3:009:35:190
17109915411,27cyclictest10277-21missed_timers11:11:540
17109915316,39cyclictest19074-21grep08:51:040
17109915315,23cyclictest9702-21munin-run11:10:010
17109915315,116cyclictest27978-21grep09:41:160
17109915313,26cyclictest17844-21grep11:56:180
17109915312,115cyclictest8954-21sort07:50:050
17109915311,101cyclictest11405-21/usr/sbin/munin08:06:170
17109915310,27cyclictest4415-21grep07:21:170
17109915310,24cyclictest29513-21wc09:52:140
17109915310,118cyclictest16990-21grep08:40:060
17109915239,94cyclictest1596-21cpuspeed10:20:340
17109915218,107cyclictest4762-21apt-get10:40:200
17109915217,111cyclictest23183-21snmpd11:20:330
17109915216,27cyclictest15981-21grep11:46:060
17109915216,112cyclictest18475-21irqstats12:00:530
17109915215,27cyclictest12618-21irqstats11:25:510
17109915215,23cyclictest21390-21df_inode09:05:360
17109915213,26cyclictest12889-21sendmail-mta08:14:350
17109915212,26cyclictest9798-21wc07:55:290
17109915135,96cyclictest5436-21apt-get07:30:260
17109915134,96cyclictest15501-21systemd-journal08:47:370
17109915132,96cyclictest0-21swapper09:00:550
17109915128,20cyclictest0-21swapper10:11:110
17109915117,24cyclictest14973-21df_inode11:40:390
17109915114,110cyclictest13915-21ls08:20:320
17109915021,102cyclictest14748-21diskstats08:25:400
17109915018,108cyclictest31738-21irqstats10:05:550
17109915017,27cyclictest6470-21diskstats10:50:450
17109915017,27cyclictest17302-21memory08:40:530
17109915015,111cyclictest3431-21grep10:31:010
17109915012,36cyclictest2948-21kworker/u2:407:40:180
17109915010,22cyclictest15501-21systemd-journal12:17:000
1710991499,35cyclictest31015-21sort10:01:030
17109914912,99cyclictest7824-1kworker/u3:711:15:230
17109914912,98cyclictest23827-21munin-run12:35:020
1710991488,101cyclictest22858-21sort12:26:150
17109914817,105cyclictest23721-21apt-get09:20:220
17109914812,113cyclictest5012-21mailstats07:26:040
17109914716,104cyclictest8987-21apt-get07:50:140
17109914713,110cyclictest13541-21tr11:31:060
17109914615,104cyclictest872-21irqstats10:15:490
17109914515,103cyclictest4038-21df10:35:380
17109914418,27cyclictest19101-21apt-get12:05:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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