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2025-11-29 - 05:09

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

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.osadl.org (updated Sat Nov 29, 2025 00:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3810266216,628sleep33886-21/usr/sbin/munin20:38:483
21431252816,494sleep221434-21sshd23:16:162
24902252710,502sleep024939-21ntpq20:03:430
18753243320,393sleep318767-21cron21:28:153
18753243320,393sleep318767-21cron21:28:153
1501240510,67sleep10-21swapper/122:13:401
18949240225,340sleep119084-21awk19:43:491
32462230417,269sleep21-21systemd23:53:152
32462230417,269sleep21-21systemd23:53:152
2355229910,275sleep02363-21awk23:58:420
30838228020,243sleep030935-21fschecks_time20:23:380
26241226313,201sleep11-21systemd23:33:151
8717225227,204sleep18792-21switchtime00:18:471
18003225010,228sleep35666-21snmpd23:05:383
2605522408,194sleep126070-21grep20:08:331
9450223617,25sleep10-21swapper/120:58:161
9450223617,25sleep10-21swapper/120:58:161
2071222966,61sleep10-21swapper/123:58:351
6352222023,149sleep16444-21latency_hist20:48:191
6352222023,149sleep16444-21latency_hist20:48:191
18708221921,177sleep318239-21apt-get23:08:253
24690221831,173sleep124693-21cron23:28:141
24690221831,173sleep124693-21cron23:28:141
7707220657,90sleep17806-21fschecks_time22:33:351
31137219111,164sleep131173-21ntpq20:23:431
3259121898,167sleep132649-21latency_hist23:53:181
3259121898,167sleep132649-21latency_hist23:53:181
8593218313,150sleep08627-21proc_pri20:53:430
8593218313,150sleep08627-21proc_pri20:53:430
23633217947,60sleep123780-21grep19:58:471
12566217216,57sleep10-21swapper/121:08:181
2405216924,124sleep00-21swapper/020:34:450
1104421618,93sleep111115-21ls19:18:451
20414215413,101sleep120476-21fschecks_time23:13:361
9652215311,125sleep19799-21unixbench_singl19:13:481
30739214812,118sleep130416-21/usr/sbin/munin22:03:591
29449214711,90sleep129468-21kernelversion20:18:381
29449214711,90sleep129468-21kernelversion20:18:381
14781214111,75sleep10-21swapper/121:13:511
14781214111,75sleep10-21swapper/121:13:511
13606214110,115sleep113693-21wc22:53:171
11175213957,14sleep10-21swapper/122:43:521
11175213957,14sleep10-21swapper/122:43:521
6640213756,26sleep10-21swapper/120:48:351
3913213565,55sleep13977-21ps00:03:441
10228213550,33sleep10-21swapper/120:58:491
12580213327,40sleep10-21swapper/100:33:161
13252213239,52sleep10-21swapper/121:08:471
20865212919,74sleep10-21swapper/119:50:351
25274212812,96sleep225328-21cpuspeed21:48:302
966821279,84sleep19687-21apt-get00:23:271
21758212712,73sleep10-21swapper/119:53:381
18732212611,76sleep118729-21apt-get23:08:271
17126212617,93sleep017173-21idleruntime23:03:370
1702721266,47sleep10-21swapper/123:03:341
1729212522,40sleep10-21swapper/120:34:251
5617212426,36sleep10-21swapper/119:03:391
5617212426,36sleep10-21swapper/119:03:391
17890212416,69sleep117933-21ntpq21:23:411
17890212416,69sleep117933-21ntpq21:23:411
16694212121,38sleep10-21swapper/119:38:281
459621199,51sleep14482-21latency_hist20:43:181
4051211933,69sleep14207-21apt-config22:23:171
325211916,74sleep10-21swapper/123:53:301
1106521190,13sleep20-21swapper/221:03:172
9474211818,82sleep39616-21latency_hist00:23:173
27642211635,33sleep127647-21cpu20:13:331
30411211512,87sleep329925-21apt-get22:03:253
28619211334,64sleep128638-21apt-get21:58:261
28619211334,64sleep128638-21apt-get21:58:261
17347211215,79sleep317389-21latency_hist21:23:183
17347211215,79sleep317389-21latency_hist21:23:183
28329211112,82sleep128506-21cat21:58:181
29408211019,75sleep129422-21latency_hist23:43:171
2000211016,79sleep32064-21latency20:34:363
6353210813,72sleep00-21swapper/000:13:160
6353210813,72sleep00-21swapper/000:13:160
5795210839,24sleep10-21swapper/122:28:181
9781210721,67sleep39847-21fschecks_time20:58:393
30967210727,26sleep10-21swapper/123:48:171
4770210616,73sleep24915-21date00:08:172
22269210527,42sleep122297-21cut21:38:431
22269210527,42sleep122297-21cut21:38:431
2204821058,61sleep10-21swapper/123:18:371
2204821058,61sleep10-21swapper/123:18:371
15672210523,70sleep115751-21cat22:58:381
8216210427,56sleep38229-21fschecks_count20:53:343
8216210427,56sleep38229-21fschecks_count20:53:343
7082210424,65sleep27154-21mailstats00:13:472
3203021047,60sleep132069-21df22:08:321
29423210313,70sleep20-21swapper/223:43:182
16480210316,73sleep316607-21latency_hist19:38:183
13411210226,38sleep113541-21latency_hist19:28:181
3906210122,66sleep33997-21fschecks_time18:58:363
6272210020,55sleep26330-21sendmail-msp00:13:142
6272210020,55sleep26330-21sendmail-msp00:13:142
3891210054,23sleep00-21swapper/020:38:490
15845210022,28sleep20-21swapper/219:33:442
1990129917,56sleep219916-21fschecks_count19:48:342
1349629916,70sleep00-21swapper/022:52:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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