You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-07-26 - 21:21

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 #2, 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.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack2slot7s.osadl.org (updated Sun Jul 26, 2026 12:43:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2107269995948,4cyclictest0-21swapper/209:35:472
2107269995847,7cyclictest2229268-21sshd11:30:522
2107268995545,4cyclictest0-21swapper/111:25:541
2107267995443,6cyclictest14-21ksoftirqd/008:55:540
210726999503,35cyclictest2162759-21ssh09:40:522
2107267995033,7cyclictest2166106-21timerandwakeup09:45:580
2107269994738,6cyclictest421-21dbus-daemon11:25:012
2107268994725,5cyclictest171rcu_preempt07:40:471
2107269994538,3cyclictest0-21swapper/211:20:012
2107269994436,5cyclictest2211628-21grep11:00:592
2107269994436,5cyclictest2211628-21grep11:00:592
2107269994435,5cyclictest2148013-21unixbench_singl09:15:592
2107267994413,27cyclictest2177882-21ssh10:05:510
2107269994335,5cyclictest2197803-21ls10:40:012
2107268994337,3cyclictest0-21swapper/109:30:491
2107268994333,6cyclictest2210607-21fschecks_count11:00:401
2107268994333,6cyclictest2210607-21fschecks_count11:00:401
2107268994332,5cyclictest0-21swapper/112:00:481
2107268994332,5cyclictest0-21swapper/112:00:481
2107267994336,4cyclictest2231041-21cron11:35:010
2107268994234,5cyclictest2110288-21systemd-run07:20:011
2107267994229,9cyclictest2168177-21aten_r2power_vo09:50:370
2107269994131,6cyclictest420-21avahi-daemon12:02:162
2107269994131,6cyclictest420-21avahi-daemon12:02:162
2107269994131,6cyclictest1287404-21cupsd10:30:382
210726899414,30cyclictest2153595-21rm09:25:511
2107268994133,4cyclictest0-21swapper/110:35:581
2107268994132,5cyclictest2204436-21aten_r2power_vo10:50:381
2107267994132,6cyclictest2205083-21ntp_states10:50:530
2107267994129,9cyclictest151ktimers/008:21:010
2107267994128,9cyclictest421-21dbus-daemon11:20:550
210726799412,32cyclictest2192963-21ssh10:30:510
2107269994032,5cyclictest2167619-21systemd-run09:50:022
2107269994032,5cyclictest2111759-21cron07:25:012
2107269994031,6cyclictest1-21systemd10:50:022
2107268994034,3cyclictest0-21swapper/110:20:011
2107268994034,3cyclictest0-21swapper/110:20:011
2107267994033,4cyclictest1000-21mta-sts-daemon11:05:390
2107267994033,4cyclictest1000-21mta-sts-daemon11:05:390
2107267994030,7cyclictest2173654-21sendmail10:00:010
2107269993932,3cyclictest0-21swapper/211:50:532
2107269993929,7cyclictest2228034-21/usr/sbin/munin11:30:012
2107269993929,6cyclictest2264491-21latency_hist12:30:022
2107268993930,5cyclictest2126937-21latency_hist08:15:031
2107268993930,4cyclictest0-21swapper/110:20:501
2107268993928,8cyclictest2221974-21munin-plugin-st11:20:021
210726899392,28cyclictest2256355-21ssh12:15:501
2107267993931,5cyclictest2203887-21ssh10:50:020
2107269993829,6cyclictest1-21systemd10:30:012
2107268993831,3cyclictest0-21swapper/108:20:011
2107268993829,6cyclictest439-21systemd-logind12:25:011
2107268993827,7cyclictest2228438-21acpi11:30:361
210726799387,20cyclictest428-21mta-sts-daemon09:05:480
210726799383,25cyclictest265-21systemd-journal12:30:530
2107267993830,5cyclictest2243136-21ls11:55:010
2107267993829,7cyclictest2174366-21fschecks_count10:00:400
2107267993827,8cyclictest2234481-21/usr/sbin/munin11:40:410
2107267993824,11cyclictest0-21swapper/011:20:010
210726799382,25cyclictest2217158-21ssh11:10:530
2107267993817,16cyclictest12650irq/32-eth012:15:510
2107267993815,3cyclictest0-21swapper/012:20:550
2107269993729,5cyclictest2176676-21cut10:05:012
2107269993726,8cyclictest2135068-21needreboot08:40:432
2107269993721,11cyclictest2180923-21sh10:10:522
2107268993728,5cyclictest2240838-21uniq11:50:421
2107268993726,8cyclictest2120058-21needreboot07:50:441
2107268993726,8cyclictest2120058-21needreboot07:50:441
2107267993732,4cyclictest2107266-21cyclictest12:30:020
2107267993726,7cyclictest1000-21mta-sts-daemon11:27:450
2107267993725,9cyclictest2134287-21kworker/u8:0+events_unbound08:45:490
2107267993722,9cyclictest12650irq/32-eth009:25:530
2107267993710,19cyclictest2186809-21diskmemload10:20:450
2107269993629,4cyclictest2210135-21kworker/u8:12-nfsiod11:10:002
2107269993629,4cyclictest2210135-21kworker/u8:12-nfsiod11:10:002
2107269993629,4cyclictest2149365-21kworker/u8:6-xprtiod11:50:012
2107269993627,4cyclictest0-21swapper/210:20:482
210726899364,24cyclictest2232294-21ssh11:35:571
2107268993628,5cyclictest2262074-21if_eth012:25:421
2107267993629,4cyclictest1003-21mta-sts-daemon12:11:000
2107267993626,4cyclictest2150074-21fschecks_time09:20:390
210726799362,25cyclictest665-21snmpd12:35:520
2107267993619,12cyclictest2141240-21kworker/u8:9+rpciod09:15:490
2107267993616,14cyclictest421-21dbus-daemon12:05:460
2107267993616,14cyclictest421-21dbus-daemon12:05:460
2107269993528,4cyclictest0-21swapper/207:10:012
2107269993528,3cyclictest0-21swapper/209:50:462
2107269993524,4cyclictest2261212-21diskmemload12:24:522
210726999352,24cyclictest2208029-21ssh10:55:522
2107268993529,3cyclictest0-21swapper/111:40:471
2107268993528,4cyclictest2267815-21aten_r2power_fr12:35:391
2107268993527,5cyclictest1000-21mta-sts-daemon10:41:011
2107267993529,4cyclictest2146488-21latency_hist09:15:020
2107269993427,4cyclictest0-21swapper/207:20:012
2107269993426,5cyclictest2206929-21latency_hist10:55:022
2107269993426,4cyclictest0-21swapper/211:55:442
2107269993426,4cyclictest0-21swapper/209:11:012
2107269993422,9cyclictest2231656-21cpu11:35:392
210726999341,9cyclictest171rcu_preempt11:40:502
2107269993418,13cyclictest623-21sshd09:25:532
2107268993427,4cyclictest2252298-21latency_hist12:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional