You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-02 - 18:33

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 Thu Apr 02, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29749238317,3808sleep029718-21apt-get09:37:310
215722377126,3728sleep316126-21kworker/u8:410:52:213
2774928246,805sleep327792-21unin-run11:12:033
2774928246,805sleep327792-21unin-run11:12:033
3262241130,340sleep33377-21cat09:57:043
3165722737,228sleep331703-21awk09:42:273
7172226762,147sleep37266-21fschecks_time10:07:223
21164224563,128sleep321295-21latency_hist10:52:053
21164224563,128sleep321295-21latency_hist10:52:053
19908223852,20sleep30-21swapper/309:07:053
6105223414,203sleep26122-21apt08:22:142
22833223437,139sleep322983-21latency_hist07:22:063
13393223451,82sleep30-21swapper/310:27:213
22957222941,174sleep322974-21modprobe09:17:033
29257222311,126sleep329235-21latency_hist07:47:053
29257222311,126sleep329235-21latency_hist07:47:053
16111222142,91sleep316148-21idleruntime-cro10:37:023
16111222142,91sleep316148-21idleruntime-cro10:37:023
1215022168,192sleep310490-21kworker/u8:208:42:053
18932214136,22sleep31783-21/usr/sbin/munin11:32:223
25889221232,85sleep325932-21awk07:32:243
25889221232,85sleep325932-21awk07:32:243
13031220977,86sleep313180-21unixbench_multi08:42:343
21878220219,120sleep30-21swapper/312:37:053
1884122019,137sleep318962-21timerwakeupswit10:42:363
6595219849,125sleep30-21swapper/308:22:313
12514219663,90sleep312598-21latency_hist12:07:053
3357218647,61sleep30-21swapper/311:37:143
3154721850,8sleep30-21swapper/307:57:063
13899217744,53sleep30-21swapper/308:47:183
13899217744,53sleep30-21swapper/308:47:183
9412216847,64sleep39498-21latency_hist11:57:043
15520216037,57sleep30-21swapper/308:52:233
24992215741,54sleep30-21swapper/309:22:243
24992215741,54sleep30-21swapper/309:22:243
983121569,134sleep39916-21timerandwakeup08:32:323
32508215383,52sleep30-21swapper/311:27:053
24660215312,119sleep324833-21dpkg11:02:063
29381214910,65sleep329522-21gpgv09:37:063
28602214946,66sleep328677-21switchtime11:12:323
5306214818,45sleep30-21swapper/311:42:273
5306214818,45sleep30-21swapper/311:42:273
30076214120,107sleep130084-21ntp_states11:17:301
4675213661,56sleep34559-21/usr/sbin/munin08:17:223
2761213243,70sleep30-21swapper/308:12:053
7787213160,54sleep37802-21apt-get11:52:043
12781212614,53sleep30-21swapper/310:24:023
31040212414,94sleep10-21swapper/109:42:041
17515212342,62sleep316995-21/usr/sbin/munin08:57:323
30509212216,86sleep230660-21head09:38:022
24829212226,24sleep30-21swapper/307:27:153
5260212115,85sleep35439-21apt-key10:02:053
22473211812,92sleep222486-21vmstat10:52:452
19686211819,81sleep20-21swapper/209:05:022
2192721146,34sleep30-21swapper/307:15:033
1706121145,33sleep30-21swapper/312:20:583
3810211312,39sleep13834-21ntp_states11:37:281
20298211347,15sleep30-21swapper/312:32:043
24909211027,70sleep324928-21apt-get11:02:143
21533211013,82sleep021050-21apt-get10:52:100
16685211016,77sleep216658-21apt-get10:37:302
14582211025,66sleep014715-21sed08:47:360
14582211025,66sleep014715-21sed08:47:360
4395210927,16sleep30-21swapper/309:58:063
7762210817,74sleep17787-21fschecks_count08:27:211
21303210816,76sleep021488-21apt-key10:52:060
3365210512,80sleep33406-21ntp_kernel_err08:12:253
27679210534,15sleep30-21swapper/309:32:053
11569210513,71sleep211578-21/usr/sbin/munin12:02:282
16693210446,44sleep316658-21apt-get10:37:353
2806221030,12sleep00-21swapper/009:32:250
18307210211,76sleep018399-21tune2fs10:42:250
8967210129,59sleep38985-21munin-run08:32:043
24280210119,63sleep30-21swapper/307:26:303
27139210014,67sleep027267-21/usr/sbin/munin09:27:340
2490929722,56sleep224991-21fschecks_time09:22:232
2490929722,56sleep224991-21fschecks_time09:22:232
2057729736,15sleep30-21swapper/309:07:303
567029620,55sleep25820-21unixbench_singl11:42:342
567029620,55sleep25820-21unixbench_singl11:42:342
1816129627,49sleep117657-21apt-get07:02:141
939529538,38sleep30-21swapper/310:12:353
939529538,38sleep30-21swapper/310:12:353
931129518,19sleep00-21swapper/008:32:210
512029418,25sleep20-21swapper/210:02:042
2557229316,62sleep025576-21diskstats07:32:160
2557229316,62sleep025576-21diskstats07:32:160
2298629318,56sleep00-21swapper/009:17:040
316852926,37sleep30-21swapper/307:57:153
15812929,68sleep31724-21latency_hist11:32:053
15812929,68sleep31724-21latency_hist11:32:053
1047729230,43sleep30-21swapper/310:17:243
1523029118,58sleep015279-21ntpq10:32:270
1523029118,58sleep015279-21ntpq10:32:270
1283529114,61sleep112926-21fschecks_time12:07:201
153642907,36sleep30-21swapper/312:14:243
1401229017,26sleep01-21systemd12:12:030
3164328912,64sleep231656-21netstat09:42:262
3008528913,61sleep230117-21grep11:17:312
237812897,64sleep323876-21cut09:17:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional