You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-03-10 - 01:28

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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 Mon Mar 09, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224162234511,2321sleep221983-21kworker/2:207:13:332
17296213365,1276sleep04927-1kworker/0:1H08:38:510
61322113011,1103sleep215823-21kworker/u8:308:03:402
23266287418,840sleep223297-21/usr/sbin/munin12:23:512
15835277518,741sleep115866-21/usr/sbin/munin08:33:511
6983259014,561sleep37017-21/usr/sbin/munin09:48:513
19519246820,431sleep119590-21cat12:13:281
25293241216,376sleep125268-21latency_hist10:48:281
15551240645,314sleep015592-21fschecks_count08:33:460
23578237224,325sleep123716-21grep12:23:581
16047231021,274sleep316049-21sshd11:59:213
256192251105,55sleep0222-21systemd-journal07:23:280
475224934,200sleep0497-21fschecks_count09:28:450
1487122368,215sleep014903-21cat11:58:290
7395223436,154sleep07398-21cron08:08:260
28414223312,204sleep028547-21latency_hist10:58:290
25628223026,192sleep025719-21cut10:48:480
23245222851,120sleep00-21swapper/007:13:550
13434222021,181sleep313517-21/usr/sbin/munin10:08:573
13522221118,178sleep012818-21/usr/sbin/munin10:08:580
457621947,172sleep14656-21find11:23:581
29068217711,18sleep00-21swapper/009:13:590
84921675,124sleep00-21swapper/011:13:430
84921675,124sleep00-21swapper/011:13:430
20960216214,133sleep121030-21switchtime08:48:571
27880216040,101sleep00-21swapper/009:13:270
4103215897,43sleep00-21swapper/007:58:290
24352215749,70sleep04927-1kworker/0:1H10:43:510
11377215315,23sleep00-21swapper/010:03:460
956621526,134sleep00-21swapper/011:39:030
956621526,134sleep00-21swapper/011:39:030
27287215222,114sleep10-21swapper/110:53:491
2411221528,131sleep024186-21find08:58:580
5459215034,101sleep05043-21/usr/sbin/munin09:43:510
16158214813,76sleep00-21swapper/010:18:470
25746214730,102sleep025883-21grep09:03:580
25746214730,102sleep025883-21grep09:03:580
23510214515,119sleep00-21swapper/010:41:000
23510214515,119sleep00-21swapper/010:41:000
1109121448,19sleep00-21swapper/008:18:480
2964421429,22sleep00-21swapper/007:33:580
3103621418,121sleep031037-21ntp_states07:38:540
929221395,17sleep00-21swapper/009:56:470
4777213718,21sleep012-21rcu_sched09:43:270
30292213717,98sleep330334-21fschecks_count11:03:453
3019921368,112sleep00-21swapper/011:03:380
7022213539,61sleep00-21swapper/009:48:520
16435213311,106sleep016581-21latency_hist12:03:300
5775213213,22sleep00-21swapper/008:03:300
2073521326,89sleep00-21swapper/012:14:400
12408213220,17sleep00-21swapper/011:49:120
932521318,100sleep09415-21fschecks_time08:13:470
2570221315,115sleep00-21swapper/012:33:260
11510213129,16sleep00-21swapper/011:48:280
8332212911,31sleep08390-21sendmail-msp11:38:260
8332212911,31sleep08390-21sendmail-msp11:38:260
32604212925,19sleep00-21swapper/007:43:550
2959921295,17sleep00-21swapper/010:59:260
23341212910,97sleep00-21swapper/012:23:530
20828212927,19sleep020875-21grep07:08:420
27250212713,94sleep00-21swapper/012:38:270
27250212713,94sleep00-21swapper/012:38:270
2554212627,76sleep00-21swapper/009:33:580
12035212519,88sleep112178-21head10:03:591
31055212410,75sleep00-21swapper/009:23:280
21906212417,92sleep121967-21switchtime12:18:571
27309212324,76sleep127475-21unixbench_multi09:09:001
19843212320,84sleep219931-21tune2fs12:13:452
437821198,73sleep04422-21ntpq11:23:530
19279211920,75sleep119281-21/usr/sbin/munin10:28:371
19880211824,77sleep320027-21sed07:03:573
10479211716,77sleep110629-21grep09:58:581
18613211621,81sleep00-21swapper/012:08:510
12844211518,30sleep10-21swapper/110:08:431
1000821158,16sleep00-21swapper/009:58:490
18915211419,76sleep119030-21latency_hist10:28:291
4323211131,39sleep30-21swapper/307:58:403
243421118,23sleep02424-21apt-get11:18:440
243421118,23sleep02424-21apt-get11:18:440
22699211122,72sleep222716-21cut10:38:482
22699211122,72sleep222716-21cut10:38:482
1792221107,50sleep00-21swapper/012:08:260
8944210927,65sleep08977-21modprobe08:13:270
24062210819,62sleep20-21swapper/210:43:452
25995210721,66sleep125887-21/usr/sbin/munin07:23:451
28933210614,72sleep329066-21/usr/sbin/munin09:13:583
15463210622,29sleep00-21swapper/010:15:570
2036221055,88sleep00-21swapper/010:30:470
28713210422,64sleep228734-21awk07:33:272
1982121035,87sleep00-21swapper/008:45:010
27163210215,69sleep327188-21fschecks_count10:53:473
2225221028,60sleep022265-21awk12:19:000
22847210174,15sleep00-21swapper/008:54:010
22847210174,15sleep00-21swapper/008:54:010
14420210126,19sleep014510-21grep08:28:540
32737210023,52sleep20-21swapper/207:43:572
2519210018,65sleep12539-21fschecks_count11:18:491
2519210018,65sleep12539-21fschecks_count11:18:491
23508210014,68sleep123575-21df08:58:421
3037129915,69sleep130487-21sed09:18:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional