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2026-07-15 - 01:57

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 Tue Jul 14, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2157278925,726sleep32201-21ntpq10:04:103
25439268021,641sleep125530-21/usr/sbin/munin09:34:151
25439268021,641sleep125530-21/usr/sbin/munin09:34:151
151325569,538sleep026729-1kworker/0:1H11:44:170
14555242743,229sleep314592-21latency_hist07:18:463
16575242270,204sleep316599-21fschecks_count10:49:043
12012241046,203sleep312041-21fschecks_time10:35:033
12012241046,203sleep312041-21fschecks_time10:35:033
5120240144,340sleep15188-21/usr/sbin/munin10:14:171
13637234315,310sleep013762-21latency_hist12:23:460
202922299117,53sleep30-21swapper/309:19:033
290262286113,54sleep30-21swapper/311:29:013
4762226872,175sleep34882-21timerwakeupswit08:29:163
20071226514,236sleep120077-21ntpq10:59:111
3813226389,63sleep33894-21mailstats10:09:153
10456225235,200sleep310653-21cat08:48:473
9276223219,183sleep09340-21fschecks_time12:09:040
22327222216,145sleep322410-21latency_hist07:43:463
18383221752,65sleep318472-21latency_hist09:13:463
30753221045,87sleep30-21swapper/308:09:103
32347220414,170sleep332050-21/usr/sbin/munin11:39:073
23873220415,173sleep223927-21latency_hist07:48:452
28040220233,19sleep30-21swapper/311:24:173
28040220233,19sleep30-21swapper/311:24:173
12086219110,153sleep30-21swapper/308:53:433
12086219110,153sleep30-21swapper/308:53:433
125721876,169sleep3892-21apt-get11:43:473
25038218645,82sleep324827-21/usr/sbin/munin09:34:053
25038218645,82sleep324827-21/usr/sbin/munin09:34:053
10821218326,71sleep30-21swapper/312:14:043
9809217817,142sleep19953-21cat10:28:471
6138217513,48sleep30-21swapper/308:35:103
12474217318,75sleep30-21swapper/307:13:003
26921216462,27sleep326925-21cron07:58:443
15226215931,89sleep315270-21unin-run09:03:453
1518321579,89sleep315280-21latency_hist12:28:463
30828215313,19sleep00-21swapper/009:53:450
1396621499,106sleep314049-21sed10:39:153
1396621499,106sleep314049-21sed10:39:153
1233214815,116sleep01289-21/usr/sbin/munin08:19:040
843221458,81sleep3364-21snmpd10:23:523
23400214518,45sleep30-21swapper/309:29:043
22715214511,72sleep30-21swapper/311:08:593
18619214215,66sleep311061-21cyclictest09:13:583
18311214211,97sleep318375-21cat10:54:093
21755214110,42sleep30-21swapper/309:24:003
9762214014,100sleep30-21swapper/312:09:153
21574214011,116sleep021645-21ls07:39:140
5891213512,109sleep35997-21grep10:14:363
5064213524,88sleep05072-21/usr/sbin/munin10:13:560
1237721348,40sleep30-21swapper/308:54:003
14896213216,91sleep214986-21fschecks_time07:19:052
23496212913,30sleep00-21swapper/009:29:050
1767621279,104sleep017750-21find09:09:150
31164212315,36sleep30-21swapper/309:54:043
304521239,99sleep33101-21tune2fs11:49:043
304521239,99sleep33101-21tune2fs11:49:043
253521225,15sleep00-21swapper/008:23:480
15599212123,76sleep30-21swapper/309:04:053
1145212136,24sleep30-21swapper/308:19:033
26964212010,41sleep30-21swapper/309:39:143
26964212010,41sleep30-21swapper/309:39:143
24113212010,61sleep30-21swapper/307:48:593
24113212010,61sleep30-21swapper/307:48:593
19116212027,81sleep3788-21sendmail-mta07:33:163
3135211742,32sleep33210-21switchtime08:24:163
747821167,68sleep30-21swapper/308:38:583
29991211626,79sleep330025-21ps09:49:113
7145211514,89sleep37188-21processes10:19:123
24727211412,44sleep30-21swapper/311:14:113
24727211412,44sleep30-21swapper/311:14:113
1498821147,17sleep30-21swapper/307:19:063
763621139,44sleep37683-21grep12:03:583
32264211326,29sleep30-21swapper/308:14:103
15856211324,37sleep30-21swapper/310:44:203
4573211122,31sleep30-21swapper/311:54:013
30574210919,32sleep30-21swapper/311:34:023
25936210920,30sleep30-21swapper/311:19:043
19003210910,38sleep119004-21sshd10:55:001
9929210819,70sleep110063-21unixbench_singl12:09:171
17798210821,60sleep017883-21cat10:53:450
1694221088,35sleep30-21swapper/312:33:553
1694221088,35sleep30-21swapper/312:33:553
15132210817,73sleep115162-21basename12:28:441
27394210723,28sleep30-21swapper/307:59:043
19609210612,37sleep30-21swapper/310:58:573
1944321068,39sleep30-21swapper/307:34:003
1534121069,13sleep00-21swapper/010:44:080
15027210512,75sleep215083-21fschecks_count10:44:022
9362210313,61sleep10-21swapper/108:44:081
3227210316,74sleep23248-21kernelversion11:49:072
3227210316,74sleep23248-21kernelversion11:49:072
458621027,12sleep00-21swapper/008:29:130
27979210118,70sleep30-21swapper/309:43:583
5712998,55sleep3612-21ntpq09:59:093
2585029922,42sleep10-21swapper/111:18:581
141929922,55sleep21395-21apt-get11:44:072
889529822,26sleep20-21swapper/210:24:322
1956329810,75sleep119654-21fschecks_time07:34:061
2137829717,58sleep121142-21/usr/sbin/munin11:04:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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