You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-24 - 06:34

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 #e, slot #4

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.

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot4s.osadl.org (updated Sun May 24, 2026 00:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847253993933,4cyclictest2888865-21latency_hist19:50:012
2847253993832,4cyclictest2988606-21diskstats21:25:142
2847257993732,3cyclictest3097313-21gpgv23:10:003
2847251993732,4cyclictest3081699-21latency_hist22:55:011
2847247993530,4cyclictest2983242-21/usr/sbin/munin21:20:140
2847257993428,4cyclictest335557-21systemd-journal20:47:363
2847251993317,11cyclictest2945964-21apt-get20:45:001
2847257993125,4cyclictest2889112-21/usr/sbin/munin19:50:253
2847247993125,4cyclictest335557-21systemd-journal20:37:330
2847247993025,4cyclictest2971407-21ntpq21:05:230
2847253992822,4cyclictest3119365-21cp23:30:002
2847247992822,4cyclictest3066201-21latency_hist22:40:010
2847253992720,5cyclictest3107989-21latency_hist23:20:002
2847251992722,3cyclictest2967289-21kworker/u8:2+flush-259:021:10:161
2847251992721,4cyclictest3054615-21ntpq22:25:211
2847253992622,3cyclictest2930735-21kworker/u8:3+flush-259:020:40:252
2847253992613,4cyclictest335557-21systemd-journal00:35:002
2847253992521,3cyclictest3119836-21kworker/u8:3+flush-259:000:15:182
2847253992519,4cyclictest3181624-21latency_hist00:30:012
2847247992518,5cyclictest3092037-21latency_hist23:05:000
2847253992417,5cyclictest3140301-21latency_hist23:50:012
2847251992419,3cyclictest335557-21systemd-journal19:36:051
284724799249,5cyclictest2951803-21find20:50:110
2847247992419,3cyclictest335557-21systemd-journal23:30:020
2847247992411,9cyclictest2962245-21cpuspeed_turbos21:00:120
2847257992320,2cyclictest2966707-21fwupd21:01:063
2847253992318,4cyclictest335557-21systemd-journal22:22:052
2847251992318,3cyclictest335557-21systemd-journal22:39:591
2847247992317,5cyclictest2898305-21ntpq19:55:220
2847257992218,3cyclictest3097862-21/usr/sbin/munin23:10:213
2847253992218,3cyclictest3119836-21kworker/u8:3+flush-259:000:20:172
2847253992217,3cyclictest335557-21systemd-journal22:32:552
2847253992216,4cyclictest2847169-21latency_hist19:10:012
2847251992216,4cyclictest2930501-21latency_hist20:30:001
2847257992118,2cyclictest509-21rs:main3
2847257992116,3cyclictest509-21rs:main3
2847257992116,3cyclictest335557-21systemd-journal23:20:013
2847257992116,3cyclictest335557-21systemd-journal23:20:003
2847257992115,5cyclictest3185915-21ntpq00:30:223
2847253992117,3cyclictest2934803-21ntpq20:30:202
2847251992116,4cyclictest3045139-21latency_hist22:20:011
2847251992116,3cyclictest3061059-21gpgv22:35:011
284724799219,3cyclictest2916951-21grep20:15:190
284724799218,4cyclictest2873155-21apt-config19:35:010
284724799217,4cyclictest3024460-21cat22:00:010
2847247992116,4cyclictest335557-21systemd-journal00:01:050
2847247992115,5cyclictest3175599-21ntpq00:20:230
2847257992017,2cyclictest3114284-21apt-get23:25:113
2847257992017,2cyclictest2967289-21kworker/u8:2+events_unbound21:45:203
2847257992015,4cyclictest2924956-21latency_hist20:25:003
2847257992014,4cyclictest335557-21systemd-journal23:36:053
2847257992014,4cyclictest335557-21systemd-journal20:30:053
2847257992014,4cyclictest2956716-21latency_hist20:55:003
2847253992015,3cyclictest3034759-21cron22:10:002
2847251992014,4cyclictest3086041-21ntpq22:55:221
284724799208,4cyclictest3044526-21timerandwakeup22:15:250
284724799207,5cyclictest3112882-21sensors23:20:230
284724799207,5cyclictest3112882-21sensors23:20:230
284724799207,4cyclictest2959298-21cut20:55:170
2847247992014,4cyclictest2946299-21base6420:45:000
2847257991916,2cyclictest2862979-21/usr/sbin/munin19:25:233
2847257991915,3cyclictest3150892-21kworker/u8:1+flush-259:000:25:173
2847257991913,4cyclictest2998530-21latency_hist21:35:013
2847253991913,4cyclictest335557-21systemd-journal22:27:062
284724799198,10cyclictest2926066-21irqcore20:25:160
284724799196,5cyclictest2860079-21kthreadcore19:20:170
2847247991916,2cyclictest2868083-21kworker/u8:0+flush-259:019:35:210
2847247991914,4cyclictest3024639-21/usr/sbin/munin22:00:210
2847247991911,5cyclictest2863261-21perl19:25:140
2847257991816,1cyclictest0-21swapper/322:44:593
2847257991814,3cyclictest2930735-21kworker/u8:3+flush-259:021:05:173
2847257991813,4cyclictest3045385-21/usr/sbin/munin22:20:153
2847253991815,2cyclictest2883694-21kworker/u8:1+events_unbound20:25:182
2847253991813,4cyclictest3071633-21kworker/u8:0+flush-259:022:45:192
2847253991813,3cyclictest3008870-21cron21:45:002
2847253991811,5cyclictest2977888-21cp21:15:022
284725199184,4cyclictest3006580-21grep21:40:181
284725199183,4cyclictest3047032-21cut22:20:181
2847251991816,1cyclictest2993565-21kworker/u8:5+events_unbound21:55:191
2847251991812,4cyclictest3186836-21latency_hist00:35:011
284724799187,10cyclictest0-21swapper/023:45:190
284724799187,10cyclictest0-21swapper/021:40:010
284724799186,4cyclictest3179772-21tr00:25:180
284724799186,3cyclictest2988445-21apt-get21:25:120
2847247991814,3cyclictest3161077-21cat00:10:010
2847247991810,6cyclictest3097502-21latency_hist23:10:000
284724799180,12cyclictest3102790-21/usr/sbin/munin23:15:000
2847257991714,2cyclictest3060601-21sh22:35:003
284725799171,15cyclictest335557-21systemd-journal22:54:593
2847257991711,4cyclictest2960967-21ntpq20:55:203
2847253991713,3cyclictest3119836-21kworker/u8:3+flush-259:000:00:172
2847253991713,3cyclictest2814953-21kworker/u8:2+flush-259:019:15:002
2847253991713,2cyclictest3129974-21kworker/u8:2+events_unbound23:55:172
284725199174,4cyclictest2933681-21cut20:30:171
284725199173,3cyclictest3003757-21systemctl21:40:001
2847251991713,3cyclictest509-21rs:main1
2847251991712,4cyclictest335557-21systemd-journal00:26:061
2847251991712,3cyclictest3176493-21latency_hist00:25:001
2847251991712,3cyclictest3119742-21gpgv23:30:001
2847251991711,4cyclictest2951553-21latency_hist20:50:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional