You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-26 - 07:47

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 Wed Nov 26, 2025 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
462295994632,9cyclictest555158-21ntpq20:35:253
462283994442,2cyclictest75-21kswapd021:59:580
462283993832,4cyclictest519570-21awk20:05:010
462283993831,5cyclictest2698871-21systemd-journal21:55:000
462290993420,11cyclictest732503-21latency_hist23:30:012
462295993330,2cyclictest75-21kswapd021:59:583
462288993326,5cyclictest560592-21ntpq20:40:201
462283993229,2cyclictest75-21kswapd022:45:040
462283993228,3cyclictest540586-21kworker/u8:0+flush-259:020:25:170
462283993226,4cyclictest747980-21latency_hist23:45:010
462295993128,2cyclictest75-21kswapd022:45:053
462288993125,4cyclictest633519-21latency_hist21:55:001
462283993126,3cyclictest617861-21kworker/u8:0+flush-259:021:40:180
462283993025,4cyclictest551072-21kworker/u8:1+events_unbound20:40:020
462283993024,4cyclictest717251-21/usr/sbin/munin23:15:240
462288992925,2cyclictest566695-21kworker/u8:0+flush-259:021:20:191
462295992812,14cyclictest768682-21latency_hist00:05:013
462290992721,4cyclictest550841-21latency_hist20:35:002
462283992721,4cyclictest499385-21diskstats19:45:140
462295992615,10cyclictest489968-21kthreadcore19:35:193
462290992620,4cyclictest727322-21latency_hist23:25:002
462283992623,2cyclictest1555393-21kworker/u8:1+flush-259:019:30:190
462295992522,2cyclictest685112-21kworker/u8:0+flush-259:022:50:163
462290992520,3cyclictest561250-21kworker/u8:2+flush-259:021:00:182
462288992522,2cyclictest664679-21kworker/u8:1+flush-259:023:35:201
462288992522,2cyclictest664679-21kworker/u8:1+flush-259:023:35:201
462288992520,4cyclictest561759-21/usr/sbin/munin20:45:151
462295992419,4cyclictest587478-21apt-get21:10:123
462295992419,3cyclictest701409-21latency_hist23:00:003
462295992411,1cyclictest0-21swapper/319:15:013
462290992420,3cyclictest617861-21kworker/u8:0+flush-259:021:55:012
462288992421,2cyclictest602448-21kworker/u8:3+events_unbound21:59:561
462283992419,4cyclictest654425-21apt-get22:15:120
462283992419,3cyclictest732739-21/usr/sbin/munin23:30:140
462283992418,4cyclictest2698871-21systemd-journal20:10:000
462295992320,2cyclictest701438-21kworker/u8:4+flush-259:023:09:593
462295992317,4cyclictest753162-21latency_hist23:50:003
462290992320,2cyclictest468364-21apt-get19:15:102
462290992317,4cyclictest561520-21latency_hist20:45:002
462288992320,2cyclictest462758-21apt-get19:10:131
462283992320,2cyclictest456676-21kworker/u8:0+flush-259:019:35:170
462283992319,3cyclictest514653-21kworker/u8:3+events_unbound20:30:220
462283992318,4cyclictest561250-21kworker/u8:2+flush-259:021:00:220
462283992317,4cyclictest534962-21apt-get20:20:010
462283992316,5cyclictest556145-21base6420:40:000
46229599228,4cyclictest675016-21/usr/sbin/munin22:35:153
462295992218,3cyclictest758580-21/usr/sbin/munin23:55:143
462295992216,4cyclictest602662-21latency_hist21:25:003
462290992218,3cyclictest473530-21apt-get19:20:122
462290992217,3cyclictest468045-21cp19:15:012
462288992218,3cyclictest75-21kswapd022:45:041
462288992217,4cyclictest540782-21/usr/sbin/munin20:25:201
462283992217,3cyclictest602448-21kworker/u8:3+events_unbound21:25:220
462295992116,4cyclictest592590-21/usr/sbin/munin21:15:203
462295992116,4cyclictest592590-21/usr/sbin/munin21:15:193
462295992116,4cyclictest494060-21/usr/sbin/munin19:40:153
462288992117,3cyclictest514653-21kworker/u8:3+flush-259:020:35:161
462288992116,4cyclictest608067-21/usr/sbin/munin21:30:161
462288992115,4cyclictest524682-21latency_hist20:10:011
462283992117,3cyclictest664679-21kworker/u8:1+events_unbound23:50:130
462283992117,3cyclictest551072-21kworker/u8:1+events_unbound20:50:150
462283992114,5cyclictest706619-21latency_hist23:05:000
462283992114,5cyclictest618089-21latency_hist21:40:000
462283992113,6cyclictest798643-21ntpq00:30:190
46229099209,1cyclictest0-21swapper/200:15:152
46229099208,2cyclictest664038-21unixbench_singl22:20:262
462290992017,2cyclictest679935-21sh22:40:002
462290992015,4cyclictest763516-21cp00:00:002
462290992014,4cyclictest519566-21latency_hist20:05:012
462288992016,3cyclictest706854-21kworker/u8:5+events_unbound23:15:181
462288992016,3cyclictest1555393-21kworker/u8:1+flush-259:019:25:181
462295991916,2cyclictest773858-21idleruntime-cro00:10:003
462295991916,2cyclictest0-21swapper/320:20:173
46229099198,2cyclictest716594-21unixbench_singl23:10:262
462290991916,2cyclictest566657-21sh20:50:002
462290991916,2cyclictest504069-21kworker/u8:1+flush-259:020:00:002
46228899199,9cyclictest685112-21kworker/u8:0+flush-259:022:50:121
462288991916,2cyclictest685112-21kworker/u8:0+flush-259:023:00:151
462288991916,2cyclictest488707-21kworker/u8:2+flush-259:019:55:161
462288991915,3cyclictest468332-21kworker/u8:2+events_unbound19:15:181
462288991913,4cyclictest710892-21ntpq23:05:231
462288991913,4cyclictest530239-21diskstats20:15:151
462288991913,4cyclictest504069-21kworker/u8:1+flush-259:019:55:001
462283991915,3cyclictest784379-21kworker/u8:1+events_unbound00:35:170
462283991915,3cyclictest669597-21sh22:30:010
462283991915,3cyclictest587238-21kworker/u8:2+events_unbound21:10:260
462283991914,3cyclictest2698871-21systemd-journal21:09:410
462290991815,2cyclictest768676-21idleruntime-cro00:05:002
462290991813,4cyclictest504100-21latency_hist19:50:012
462288991814,3cyclictest664679-21kworker/u8:1+flush-259:022:45:011
462288991814,3cyclictest468332-21kworker/u8:2+events_unbound19:20:151
462288991813,3cyclictest566695-21kworker/u8:0+flush-259:021:15:011
462288991812,5cyclictest628389-21latency_hist21:50:011
462283991814,3cyclictest664679-21kworker/u8:1+events_unbound23:10:010
462283991814,3cyclictest424904-21kworker/u8:4+flush-259:019:10:230
462295991714,2cyclictest501513-21kthreadcore19:45:183
462295991713,3cyclictest664679-21kworker/u8:1+flush-259:022:25:123
462295991713,3cyclictest551072-21kworker/u8:1+flush-259:020:40:163
462295991710,5cyclictest2698871-21systemd-journal23:11:423
462290991714,2cyclictest722157-21cron23:19:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional