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2022-06-26 - 19:17

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 Sun Jun 26, 2022 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11721255810,532sleep011762-21ntpq09:49:520
10949251020,474sleep110985-21/usr/sbin/munin08:04:421
17186248846,426sleep317282-21fschecks_time08:24:423
9923246789,280sleep39992-21fschecks_time09:45:063
9923246789,280sleep39992-21fschecks_time09:45:063
32693244289,339sleep332757-21cat07:29:453
32693244289,339sleep332757-21cat07:29:453
31525240512,376sleep131536-21ntpq09:09:481
1329923426,263sleep313345-21ntpq09:54:513
1329923426,263sleep313345-21ntpq09:54:513
18994233511,262sleep319037-21sed10:14:373
162462298120,74sleep316389-21unixbench_singl08:19:543
3462229412,268sleep03500-21ntpq07:39:470
29300226091,74sleep329270-21latency_hist09:04:263
29300226091,74sleep329270-21latency_hist09:04:263
24156225813,227sleep324197-21ntp_kernel_pll_10:29:543
4457225213,211sleep34621-21unixbench_multi11:10:023
2352225214,213sleep32435-21fschecks_time11:04:503
26958223714,203sleep227031-21latency_hist12:24:242
1318222996,70sleep31353-21find10:59:573
20301222513,196sleep220397-21grep08:34:462
1224621995,181sleep34786-1kworker/3:1H09:50:113
29109219237,27sleep329199-21timerwakeupswit10:45:003
29109219237,27sleep329199-21timerwakeupswit10:45:003
29995219113,157sleep330007-21modprobe12:34:223
15025217812,17sleep30-21swapper/309:59:563
27872217017,126sleep128012-21tail12:24:521
22635216311,139sleep322666-21fschecks_count12:10:043
22635216311,139sleep322666-21fschecks_count12:10:043
24224216132,44sleep30-21swapper/312:14:453
3369215813,56sleep30-21swapper/307:39:463
23834215624,18sleep30-21swapper/308:44:523
23834215624,18sleep30-21swapper/308:44:523
31441215312,74sleep30-21swapper/309:09:463
26512215034,98sleep026577-21fschecks_time08:54:420
1288121509,78sleep312920-21processes08:09:573
1288121509,78sleep312920-21processes08:09:573
3102521415,18sleep30-21swapper/310:51:343
3543213810,14sleep30-21swapper/309:24:443
9740213710,112sleep31-21systemd11:29:243
9740213710,112sleep31-21systemd11:29:243
31281213615,52sleep30-21swapper/307:24:483
31281213615,52sleep30-21swapper/307:24:483
2594821349,60sleep325959-21sendmail_mailst07:09:303
19400213415,101sleep319448-21latency10:14:493
19400213415,101sleep319448-21latency10:14:493
3033421325,11sleep30-21swapper/307:21:053
3033421325,11sleep30-21swapper/307:21:053
2578221328,65sleep3368-21snmpd08:50:133
2063821286,16sleep30-21swapper/312:03:553
2841221276,11sleep30-21swapper/312:28:533
2326321275,11sleep30-21swapper/310:26:443
781921265,11sleep30-21swapper/309:38:573
25537212620,90sleep225633-21cat07:09:252
25537212620,90sleep225633-21cat07:09:252
10285212513,96sleep310393-21netstat11:29:523
10285212513,96sleep310393-21netstat11:29:523
16693212411,101sleep316740-21ntpq11:49:503
148321236,105sleep30-21swapper/309:18:263
31165212219,82sleep231181-21fschecks_count09:09:412
16397212116,87sleep016436-21users08:19:550
1143621218,50sleep311528-21cat08:04:523
13471212013,89sleep113473-21sshd08:11:481
13471212013,89sleep113473-21sshd08:11:481
1236211918,84sleep11296-21grep07:34:231
1236211918,84sleep11296-21grep07:34:231
9571211855,48sleep39712-21latency_hist09:44:263
7013211816,58sleep37057-21fschecks_time11:19:473
7013211816,58sleep37057-21fschecks_time11:19:473
27630211818,37sleep30-21swapper/310:39:593
27630211818,37sleep30-21swapper/310:39:593
28735211643,40sleep00-21swapper/012:29:350
9766211510,38sleep30-21swapper/307:59:483
6790211510,90sleep16864-21find07:49:531
2300421148,45sleep323052-21systemd-run08:44:243
2038211410,90sleep32122-21grep07:34:533
2038211410,90sleep32122-21grep07:34:533
26108211322,71sleep126129-21apt08:54:221
2660221129,38sleep30-21swapper/310:39:233
1862921128,39sleep30-21swapper/308:29:383
9401211128,59sleep09416-21cut07:59:400
7576211114,74sleep30-21swapper/307:54:273
6326211174,19sleep30-21swapper/311:15:483
1582421115,49sleep30-21swapper/311:47:083
4138211027,59sleep24289-21unixbench_singl09:24:552
31242210923,66sleep131246-21cron10:54:221
24641210965,29sleep324679-21proc_pri07:04:503
24641210965,29sleep324679-21proc_pri07:04:503
27741210713,78sleep327828-21wc08:59:253
2203621075,91sleep30-21swapper/312:07:023
3198921067,32sleep30-21swapper/310:55:013
28348210624,25sleep00-21swapper/010:44:280
28348210624,25sleep00-21swapper/010:44:280
19998210616,19sleep10-21swapper/111:59:571
1798021068,35sleep30-21swapper/311:54:433
1798021068,35sleep30-21swapper/311:54:433
15362210615,75sleep015450-21cat11:45:270
6601210512,79sleep26670-21df09:34:402
30866210516,74sleep231024-21latency_hist09:09:252
30866210516,74sleep231024-21latency_hist09:09:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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