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2022-07-06 - 05:51

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 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack5slot7s.osadl.org (updated Wed Jul 06, 2022 00:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24308224652216,88sleep00-21swapper19:09:590
243559916242,97cyclictest12285-21/usr/sbin/munin00:25:590
243559916213,28cyclictest18649-21apt-get21:51:490
243559916013,123cyclictest2746-21diskstats23:30:410
243559916011,102cyclictest18714-21latency_hist21:50:080
243559915931,33cyclictest0-21swapper19:51:080
243559915929,36cyclictest0-21swapper21:16:140
243559915916,26cyclictest7598-21mailstats23:56:140
243559915911,124cyclictest12851-21sort21:11:160
243559915814,37cyclictest17033-21munin-run21:40:030
243559915810,124cyclictest32336-21ntpq19:55:540
243559915715,118cyclictest4356-21munin-run23:40:030
243559915617,112cyclictest29440-21/usr/sbin/munin22:56:190
243559915615,20cyclictest25152-21munin-run19:15:030
243559915613,101cyclictest6014-21apt-get23:51:250
243559915534,99cyclictest5773-21/usr/sbin/munin20:30:410
243559915519,112cyclictest23698-21munin-run22:20:010
243559915519,108cyclictest19876-21diskstats21:55:480
243559915517,24cyclictest11498-21ntp_states00:21:000
243559915515,115cyclictest26928-21munin-run22:40:030
243559915511,26cyclictest31978-21snmpd19:30:500
243559915511,118cyclictest23831-21wc22:20:300
243559915510,25cyclictest3726-21apt-get20:21:550
243559915418,112cyclictest7978-21munin-run20:45:040
243559915417,112cyclictest31064-21head19:46:130
24355991539,27cyclictest8818-21grep20:50:040
243559915326,22cyclictest3019-21apt-get20:15:180
243559915318,107cyclictest28644-21apt-get22:50:190
243559915315,24cyclictest27336-21diskstats19:25:420
243559915315,22cyclictest22296-21diskstats22:10:410
243559915314,115cyclictest10504-21apt-get21:00:320
243559915313,23cyclictest29239-21zcat19:36:010
243559915311,116cyclictest12050-21cat21:06:160
24355991528,122cyclictest9806-21sort00:10:550
243559915228,21cyclictest0-21swapper23:01:100
243559915226,106cyclictest15473-21latency_hist21:30:040
243559915216,23cyclictest30344-21munin-run19:45:020
243559915213,99cyclictest7211-21sort20:40:050
243559915213,23cyclictest309-21diskstats23:15:400
243559915211,29cyclictest2510-21kworker/u2:1220:11:450
243559915210,119cyclictest8828-21cstates00:05:310
243559915117,24cyclictest9782-21diskstats20:55:420
243559915116,109cyclictest25578-21diskstats19:15:290
243559915115,24cyclictest27204-21grep19:25:050
243559915115,23cyclictest1906-21apt20:10:020
243559915114,114cyclictest14280-21munin-plugin-st00:40:020
243559915111,27cyclictest5618-21grep20:30:050
243559915111,25cyclictest20586-21/usr/sbin/munin22:01:100
243559915011,97cyclictest9483-21grep20:51:090
243559915011,27cyclictest13092-21grep00:31:000
243559915010,26cyclictest32284-21grep23:11:060
243559914917,25cyclictest27159-21diskstats22:40:400
243559914916,23cyclictest5380-21diskstats23:45:390
243559914817,23cyclictest11061-21munin-run00:20:020
243559914816,22cyclictest17327-21irqstats21:40:470
243559914815,26cyclictest16182-21users21:31:160
243559914815,110cyclictest14295-21wc21:21:040
243559914813,47cyclictest8066-21diskstats00:00:410
243559914719,27cyclictest1942-21df_inode23:25:390
243559914714,24cyclictest1739-21munin-run23:25:020
243559914714,111cyclictest27846-21apt-get22:45:160
243559914712,29cyclictest25397-21latency_hist22:30:060
243559914712,113cyclictest3988-21kworker/u2:323:40:190
243559914710,111cyclictest25477-21cpu22:30:390
243559914615,108cyclictest511-21df20:00:310
243559914614,23cyclictest31175-21df_inode23:05:410
243559914613,109cyclictest21672-21tr22:05:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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