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2022-07-06 - 17:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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.MX6 Quad @996 MHz, Linux 5.15.26-xenomai (Profile)

Latency plot of shadow in rack #b, slot #7
Note that this system runs a non-RT kernel.
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 highest latencies:
System rackbslot7s (updated Wed Jul 06, 2022 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24127257815,545sleep132715-21kworker/u8:209:14:441
9200247511,420sleep09214-21fschecks_count11:54:480
23510247214,401sleep023649-21tail10:54:590
19724239425,309sleep019727-21cron12:29:290
19724239425,309sleep019727-21cron12:29:290
26048234827,306sleep026140-21tune2fs11:04:490
32734230441,124sleep0428-21grep09:40:000
17003229750,73sleep00-21swapper/012:19:480
154192275133,128sleep015446-21fschecks_count12:14:510
9569227323,191sleep09705-21unixbench_singl10:10:000
8254225814,227sleep18147-21cron08:24:321
3240922510,11sleep231972-21/usr/sbin/munin09:39:532
18281224345,128sleep00-21swapper/010:39:490
17596223020,114sleep00-21swapper/010:35:530
17596223020,114sleep00-21swapper/010:35:530
1903221610,146sleep02058-21latency_hist08:04:320
30498221563,75sleep00-21swapper/009:34:470
10773221410,143sleep010819-21fschecks_count11:59:490
2042122130,7sleep00-21swapper/010:45:010
2399221010,184sleep02435-21latency08:04:530
2399221010,184sleep02435-21latency08:04:530
2040220419,127sleep02188-21unixbench_multi11:30:010
973922029,131sleep09846-21latency_hist08:29:320
2724220058,84sleep00-21swapper/009:49:490
2724220058,84sleep00-21swapper/009:49:490
18382219515,16sleep30-21swapper/307:14:323
13895219314,164sleep213937-21ntp_kernel_pll_10:24:532
1843121929,117sleep018552-21date07:14:330
127762190123,26sleep012813-21cron08:39:300
11232219015,159sleep111243-21cron08:34:301
22589218968,57sleep00-21swapper/009:09:510
27415218816,158sleep327489-21find07:40:003
27415218816,158sleep327489-21find07:40:003
24491218759,76sleep024559-21fschecks_time10:59:480
2336921865,169sleep00-21swapper/007:29:020
18557218510,134sleep018696-21awk08:55:010
20287218447,59sleep020314-21cat07:19:290
8245218325,140sleep08388-21grep11:50:000
25930217538,75sleep026083-21unixbench_multi07:35:000
25930217538,75sleep026083-21unixbench_multi07:35:000
14393217436,75sleep00-21swapper/012:09:590
416421679,142sleep00-21swapper/009:54:460
416421679,142sleep00-21swapper/009:54:460
6525216511,141sleep06584-21dpkg08:19:300
25004216513,139sleep024974-21latency_hist07:34:320
7956216110,17sleep00-21swapper/008:22:090
4164215617,79sleep00-21swapper/011:39:300
32124215629,57sleep00-21swapper/007:54:590
29995215529,89sleep030054-21fschecks_count07:49:500
15581215345,80sleep015595-21grep07:04:480
28073214911,61sleep028083-21modprobe07:44:290
28073214911,61sleep028083-21modprobe07:44:290
22117214910,124sleep00-21swapper/012:34:580
15275214719,111sleep015041-21/usr/sbin/munin10:29:510
29102214630,46sleep00-21swapper/011:14:380
19785214414,76sleep00-21swapper/008:59:530
2917221428,74sleep029216-21ntpq09:29:540
1922421410,11sleep10-21swapper/107:15:011
24374213919,96sleep224510-21unixbench_multi07:30:012
29619213817,84sleep01-21systemd07:49:300
29619213817,84sleep01-21systemd07:49:300
15945213524,66sleep00-21swapper/008:49:310
7391213358,18sleep00-21swapper/010:04:470
26308213228,60sleep00-21swapper/009:20:170
21514213216,21sleep10-21swapper/109:04:591
22149213127,87sleep222163-21cpu07:24:442
210521317,36sleep00-21swapper/009:46:220
10855212811,75sleep010895-21proc_pri10:14:570
1615521275,111sleep00-21swapper/008:49:390
1397121276,33sleep00-21swapper/010:24:550
24702212511,66sleep024776-21switchtime09:15:040
487821227,79sleep04924-21ntpq11:39:540
24674212222,81sleep324706-21latency10:59:513
2047621229,76sleep020517-21cut12:29:580
2047621229,76sleep020517-21cut12:29:580
20663211914,23sleep10-21swapper/109:04:311
22302211515,17sleep00-21swapper/010:51:240
22302211515,17sleep00-21swapper/010:51:240
31962211418,67sleep20-21swapper/207:54:572
24251211417,76sleep224307-21grep09:14:542
30051211124,67sleep330084-21munin-run09:34:293
22814211153,42sleep222870-21sendmail-msp12:39:292
676621105,13sleep00-21swapper/010:01:160
28445211021,72sleep328462-21fschecks_count07:44:483
28445211021,72sleep328462-21fschecks_count07:44:483
1238121100,17sleep112-21rcu_sched08:35:021
22200210931,65sleep022237-21munin-run09:09:300
713921085,12sleep00-21swapper/011:47:420
994421075,12sleep00-21swapper/008:29:360
853210714,76sleep3897-21latency_hist09:44:313
3248321077,14sleep20-21swapper/211:24:502
3248321077,14sleep20-21swapper/211:24:502
28006210730,64sleep00-21swapper/011:09:580
4582210618,69sleep14165-21/usr/sbin/munin09:54:591
4582210618,69sleep14165-21/usr/sbin/munin09:54:591
16754210637,44sleep216758-21cron07:09:302
16595210514,62sleep216658-21lockfile-remove12:19:302
13793210516,63sleep113495-21/usr/sbin/munin10:24:521
27253210422,69sleep027293-21cpu09:24:450
16759210440,41sleep31-21systemd07:09:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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