You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-03-22 - 11:39

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 #9, 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.
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 rack9slot4s (updated Sun Mar 22, 2026 00:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37329912401231,6cyclictest0-21swapper/119:26:301
36542579532,31sleep10-21swapper/119:24:471
35752564518,30sleep00-21swapper/019:23:570
373199231207,21cyclictest0-21swapper/019:26:300
1528221090,8sleep1373299cyclictest23:26:191
295402800,3sleep041ktimersoftd/000:49:040
61902760,5sleep0373199cyclictest21:36:590
176632581,36sleep017769-21mailstats21:15:260
90732460,4sleep19072-21perl21:40:161
3731994425,4cyclictest3-21ksoftirqd/023:30:260
3731994325,6cyclictest3-21ksoftirqd/022:03:490
3731994225,5cyclictest3-21ksoftirqd/023:38:290
373299416,32cyclictest0-21swapper/123:12:161
3731994125,5cyclictest3-21ksoftirqd/023:03:180
3731994124,5cyclictest3-21ksoftirqd/023:05:100
3731994122,9cyclictest3-21ksoftirqd/000:03:080
3731994122,8cyclictest3-21ksoftirqd/022:25:350
3731994122,5cyclictest3-21ksoftirqd/000:21:130
3731994121,5cyclictest3-21ksoftirqd/023:15:050
3731994024,5cyclictest3-21ksoftirqd/022:09:190
3731994019,10cyclictest3-21ksoftirqd/000:16:200
16502403,4sleep181rcu_preempt00:20:031
373199394,31cyclictest0-21swapper/023:45:550
3731993924,5cyclictest3-21ksoftirqd/022:43:350
3731993924,5cyclictest3-21ksoftirqd/000:44:310
3731993923,5cyclictest3-21ksoftirqd/021:56:180
3731993923,5cyclictest3-21ksoftirqd/020:02:370
3731993922,6cyclictest3-21ksoftirqd/022:35:210
318742391,35sleep132024-21grep20:35:291
3731993823,5cyclictest3-21ksoftirqd/023:13:040
3731993821,6cyclictest3-21ksoftirqd/020:57:030
3731993818,5cyclictest3-21ksoftirqd/022:13:040
3731993816,7cyclictest3-21ksoftirqd/022:34:180
373299377,4cyclictest81rcu_preempt23:09:591
373299375,28cyclictest0-21swapper/121:59:361
373299371,33cyclictest0-21swapper/119:51:361
3731993722,5cyclictest3-21ksoftirqd/021:50:560
3731993722,5cyclictest3-21ksoftirqd/021:11:090
3731993721,5cyclictest3-21ksoftirqd/023:58:380
3731993721,5cyclictest3-21ksoftirqd/023:42:220
3731993721,5cyclictest3-21ksoftirqd/019:52:250
3731993720,6cyclictest3-21ksoftirqd/020:28:050
3731993720,5cyclictest3-21ksoftirqd/000:33:520
3731993720,5cyclictest3-21ksoftirqd/000:33:510
3731993719,8cyclictest3-21ksoftirqd/022:24:320
3731993719,5cyclictest3-21ksoftirqd/023:25:450
3731993716,6cyclictest3-21ksoftirqd/000:07:460
373299361,5cyclictest18444-21diskstats23:30:151
3731993622,4cyclictest3-21ksoftirqd/020:48:420
3731993621,5cyclictest3-21ksoftirqd/021:26:290
3731993621,5cyclictest3-21ksoftirqd/019:41:520
3731993620,6cyclictest3-21ksoftirqd/019:33:160
3731993618,6cyclictest3-21ksoftirqd/019:59:460
3731993618,6cyclictest3-21ksoftirqd/019:59:450
3731993616,5cyclictest0-21swapper/023:21:260
3731993611,15cyclictest3-21ksoftirqd/022:52:310
308632361,31sleep130877-21ssh23:42:511
164712365,27sleep116481-21ssh22:20:381
373299355,5cyclictest81rcu_preempt00:50:281
373299352,29cyclictest0-21swapper/100:34:161
373299352,29cyclictest0-21swapper/100:34:151
373299352,10cyclictest16769-21diskstats00:35:151
373199356,26cyclictest21075-21cron23:00:000
373199352,13cyclictest90722perl21:40:160
3731993520,5cyclictest3-21ksoftirqd/023:51:430
3731993520,5cyclictest3-21ksoftirqd/021:21:090
3731993520,5cyclictest3-21ksoftirqd/000:35:510
3731993519,6cyclictest3-21ksoftirqd/019:36:210
3731993517,5cyclictest14223-21missed_timers21:45:230
276262351,31sleep127640-21ssh00:12:541
109042351,4sleep110941-21ntp_states23:55:241
5712341,30sleep0577-21ssh00:52:380
373299345,4cyclictest81rcu_preempt22:25:131
373299344,4cyclictest81rcu_preempt23:15:001
373299344,4cyclictest81rcu_preempt22:39:071
3732993424,6cyclictest17676-21/usr/sbin/munin20:00:161
373299342,28cyclictest0-21swapper/121:23:351
373299342,18cyclictest0-21swapper/122:54:441
373299341,29cyclictest28352-21ssh21:26:161
3731993420,5cyclictest3-21ksoftirqd/022:19:250
3731993419,4cyclictest3-21ksoftirqd/021:33:510
3731993418,6cyclictest3-21ksoftirqd/000:26:350
373199341,7cyclictest9152-21ssh22:46:450
35232341,29sleep13536-21ssh22:07:561
373299336,4cyclictest81rcu_preempt21:30:231
373299334,4cyclictest81rcu_preempt21:46:591
373299334,4cyclictest81rcu_preempt21:10:351
373299333,4cyclictest81rcu_preempt00:43:371
3732993327,3cyclictest0-21swapper/121:51:361
373299331,4cyclictest8275-21ssh00:25:351
373299331,30cyclictest0-21swapper/122:57:361
3731993319,5cyclictest3-21ksoftirqd/019:47:170
3731993317,5cyclictest3-21ksoftirqd/000:11:140
298122331,4sleep129926-21mailstats20:30:271
201642331,28sleep120237-21memory20:05:231
373299324,24cyclictest0-21swapper/122:00:121
373299323,4cyclictest81rcu_preempt23:39:481
373299323,4cyclictest81rcu_preempt23:01:031
373299323,4cyclictest81rcu_preempt21:19:521
373299323,26cyclictest22-21ksoftirqd/120:25:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional