You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-07-24 - 21:16

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 Fri Jul 24, 2026 12:43:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2543480997763,8cyclictest0-21swapper/211:30:532
254348099532,25cyclictest2662272-21ssh11:25:482
254348099532,25cyclictest2662272-21ssh11:25:482
2543480995031,15cyclictest2677975-21unixbench_singl11:50:582
2543478994940,6cyclictest1742083-21cups-browsed11:58:050
254347899492,9cyclictest2665370-21ssh11:30:530
2543480994840,5cyclictest2577996-21systemd-run09:05:012
2543480994839,6cyclictest2574974-21true08:55:012
254347999482,39cyclictest2604828-21ssh09:50:491
2543478994733,10cyclictest0-21swapper/011:05:460
2543480994618,25cyclictest2644539-21timerandwakeup10:55:572
2543480994617,3cyclictest0-21swapper/210:50:502
254348099453,36cyclictest2610904-21ssh10:00:482
254348099453,36cyclictest2610904-21ssh10:00:482
254348099451,19cyclictest2548949-21modprobe07:25:512
2543479994537,5cyclictest2609812-21latency_hist10:00:021
254347899453,8cyclictest171rcu_preempt10:35:420
2543478994529,12cyclictest2668825-21grep11:35:580
2543480994435,6cyclictest1-21systemd08:10:012
254348099441,14cyclictest2701644-21ntpq12:30:492
2543480994410,10cyclictest1742083-21cups-browsed10:32:132
2543479994436,5cyclictest2670263-21systemd-run11:40:011
2543480994333,7cyclictest265-21systemd-journal11:15:012
2543480994319,20cyclictest1742083-21cups-browsed09:16:002
2543480994317,3cyclictest0-21swapper/211:45:502
2543480994315,2cyclictest0-21swapper/212:25:412
2543480994231,6cyclictest0-21swapper/212:15:012
2543480994221,17cyclictest2619261-21aten_r2power_cu10:15:342
2543480994219,20cyclictest2685904-21aten_r2power_po12:05:372
2543480994217,3cyclictest0-21swapper/210:10:452
2543480994215,2cyclictest0-21swapper/211:00:472
254347899423,7cyclictest0-21swapper/012:15:490
254347899422,33cyclictest2647223-21ssh11:00:500
2543480994132,4cyclictest0-21swapper/210:05:512
2543480994132,4cyclictest0-21swapper/210:05:512
2543480994124,13cyclictest0-21swapper/209:35:482
2543480994116,3cyclictest0-21swapper/209:10:562
2543479994134,4cyclictest2688476-21latency_hist12:10:021
254348099404,16cyclictest351ktimers/208:30:472
2543480994018,19cyclictest0-21swapper/210:20:382
2543480994017,2cyclictest0-21swapper/209:55:592
2543480994016,3cyclictest0-21swapper/209:20:472
2543480994016,3cyclictest0-21swapper/209:20:472
2543480994015,5cyclictest2659450-21processes11:20:562
2543480994015,5cyclictest2659450-21processes11:20:562
2543480994014,5cyclictest1003-21mta-sts-daemon12:21:472
2543480994014,3cyclictest0-21swapper/209:40:522
2543480994010,4cyclictest1000-21mta-sts-daemon08:10:512
2543479994032,5cyclictest2702189-21sed12:30:581
2543479994032,5cyclictest2697443-21idleruntime-cro12:25:011
2543479994032,5cyclictest2633919-21run-parts10:40:011
2543479994031,6cyclictest2635209-21proc_pri10:40:511
2543479994031,6cyclictest2635209-21proc_pri10:40:511
2543478994029,4cyclictest1001-21mta-sts-daemon09:11:440
2543478994020,13cyclictest12650irq/32-eth009:40:450
2543478994019,13cyclictest151ktimers/009:30:450
254348099393,9cyclictest2704673-21sshd12:35:492
2543480993916,2cyclictest0-21swapper/210:40:012
2543480993912,5cyclictest1002-21mta-sts-daemon07:10:372
254348099391,15cyclictest2601847-21ntpq09:45:462
2543478993935,2cyclictest0-21swapper/009:15:490
2543480993829,6cyclictest2543499-21latency_hist07:10:022
254348099382,16cyclictest2635079-21ntpq10:40:472
254348099382,16cyclictest2635079-21ntpq10:40:472
254348099382,14cyclictest2652103-21munin-run11:10:022
2543480993817,18cyclictest2655735-21cpuspeed11:15:372
2543480993814,2cyclictest0-21swapper/212:15:362
2543480993813,7cyclictest2669034-21sh11:36:152
2543480993811,6cyclictest0-21swapper/211:40:532
2543480993810,5cyclictest2606412-21sh09:53:572
2543478993831,3cyclictest0-21swapper/012:25:460
2543478993829,5cyclictest0-21swapper/010:05:520
2543478993829,5cyclictest0-21swapper/010:05:520
2543478993822,11cyclictest0-21swapper/009:35:340
254348099373,14cyclictest2683009-21df12:00:382
254348099373,14cyclictest2683009-21df12:00:382
2543480993731,3cyclictest0-21swapper/208:50:022
2543480993729,4cyclictest2591833-21latency_hist09:30:022
2543480993729,4cyclictest2591833-21latency_hist09:30:022
2543480993717,17cyclictest0-21swapper/209:35:022
254348099371,14cyclictest2637889-21memory10:45:412
254348099371,13cyclictest2625764-21latency10:25:442
2543479993728,6cyclictest1-21systemd09:45:011
2543479993728,5cyclictest2679283-21ssh11:55:011
2543479993728,5cyclictest2587223-21unixbench_multi09:20:581
2543479993728,5cyclictest2587223-21unixbench_multi09:20:581
254347899375,25cyclictest151ktimers/007:25:480
2543478993731,3cyclictest2640087-21latency_hist10:50:020
2543478993731,3cyclictest0-21swapper/010:25:480
2543478993730,3cyclictest0-21swapper/007:30:510
2543478993725,5cyclictest0-21swapper/009:50:500
2543478993724,9cyclictest2607642-21latency09:55:480
2543480993615,3cyclictest0-21swapper/211:55:442
2543480993615,2cyclictest0-21swapper/208:05:022
2543479993629,4cyclictest0-21swapper/110:30:521
2543479993628,5cyclictest2699076-21unixbench-2d12:25:581
2543479993628,5cyclictest2618942-21latency_hist10:15:021
2543479993628,4cyclictest0-21swapper/110:15:381
2543479993627,6cyclictest2626551-21grep10:26:011
2543479993626,7cyclictest2649049-21ssh11:05:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional