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2026-07-16 - 23:23

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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 
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Thu Jul 16, 2026 12:45:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41203399912636,14cyclictest131rcu_preempt12:20:030
41203399912345,20cyclictest16850irq/134-800000011:30:020
412033999121116,3cyclictest0-21swapper/007:10:030
4120339999026,13cyclictest4180224-21ssh11:01:530
4120349998823,33cyclictest13466-21rm11:59:133
412033999851,40cyclictest4142566-21ssh09:43:070
4120339998323,12cyclictest19385-21ssh12:11:140
4120339998235,42cyclictest16850irq/134-800000011:35:010
4120339998235,42cyclictest16850irq/134-800000011:35:010
4120339998223,15cyclictest9457-21ssh11:50:250
4120339998023,14cyclictest4128325-21ssh09:13:280
4120339998023,14cyclictest4128325-21ssh09:13:280
4120339997929,46cyclictest4189369-21ssh11:21:000
4120339997927,17cyclictest4145410-21ssh09:49:270
4120339997927,10cyclictest4154576-21ssh10:08:280
4120339997927,10cyclictest4154576-21ssh10:08:280
4120339997924,14cyclictest4133324-21ssh09:23:530
4120339997813,17cyclictest16850irq/134-800000011:40:370
4120339997813,17cyclictest16850irq/134-800000011:40:370
4120339997721,12cyclictest4147292-21ssh09:53:080
4120339997628,17cyclictest4175342-21ssh10:51:420
4120339997428,14cyclictest4169962-21ssh10:40:110
412033999742,66cyclictest4186553-21modprobe11:15:020
4120344997367,4cyclictest4119851-21kworker/u8:207:25:031
4120339997334,35cyclictest4294-21munin-plugin-st11:40:000
4120339997318,12cyclictest4149682-21ssh09:58:110
4120339997312,56cyclictest275-21dbus-daemon09:20:010
4120339997215,12cyclictest32786-21ssh12:39:450
412033999717,20cyclictest0-21swapper/009:30:020
4120339997125,16cyclictest4137351-21ssh09:32:100
4120339997121,12cyclictest17606-21ssh12:07:380
4120339997038,28cyclictest16950irq/224-800000010:20:010
4120339997034,32cyclictest16850irq/134-800000012:30:220
4120339997026,40cyclictest0-21swapper/012:21:330
4120339996828,9cyclictest4186122-21ssh11:14:370
4120339996828,36cyclictest16850irq/134-800000012:00:020
412033999672,6cyclictest4125032-21munin-run08:40:010
4120349996628,34cyclictest4162936-21sh10:25:253
4120339996628,8cyclictest4156590-21ssh10:12:270
412033999661,28cyclictest0-21swapper/010:56:300
412034999652,19cyclictest4141017-21/usr/sbin/munin09:40:023
412034999652,15cyclictest4147425-21ssh09:53:243
412034999651,18cyclictest24511-21ssh12:22:063
412034999651,13cyclictest4133308-21ssh09:23:513
4120339996519,42cyclictest4165165-21ssh10:30:120
4120339996517,43cyclictest16850irq/134-800000010:45:420
4120339996517,43cyclictest16850irq/134-800000010:45:420
412034999642,20cyclictest32645-21ssh12:39:273
412034999642,18cyclictest4167522-21ssh10:35:073
412033999643,18cyclictest4126575-21modprobe09:10:000
4120339996423,4cyclictest0-21swapper/012:25:380
4120339996419,15cyclictest3467602-21systemd-journal11:50:000
412034999632,5cyclictest4120579-21munin-run07:15:013
412034999631,19cyclictest4183785-21ssh11:09:433
412034999631,10cyclictest11066-21ssh11:54:043
4120339996323,5cyclictest4123829-21latency_hist08:15:020
4120339996323,5cyclictest4123829-21latency_hist08:15:020
4120339996320,12cyclictest16117-21ssh12:04:430
4120339996319,6cyclictest4182067-21ssh11:05:350
4120349996224,33cyclictest26256-21sh12:25:323
412034999622,18cyclictest4137119-21sh09:31:413
412034999622,13cyclictest4152897-21munin-run10:05:023
412034999622,11cyclictest4173092-21rm10:47:043
412034999622,11cyclictest4173092-21rm10:47:043
412034999621,9cyclictest4187360-21ssh11:16:513
4120349996216,41cyclictest1-21systemd11:15:013
412034999621,10cyclictest4177708-21ssh10:56:373
412034999613,4cyclictest4123673-21sshd08:13:223
412034999613,4cyclictest4123673-21sshd08:13:213
412034999612,4cyclictest3467602-21systemd-journal09:12:383
412034999612,4cyclictest3467602-21systemd-journal09:12:373
412034999611,9cyclictest2285-21ssh11:35:223
412034999611,9cyclictest21500-21ssh12:15:393
412034999611,8cyclictest4154556-21ssh10:08:263
412034999611,8cyclictest4154556-21ssh10:08:253
412034999611,8cyclictest4129661-21ssh09:16:113
412034999611,8cyclictest19661-21ssh12:11:573
412034999611,8cyclictest17276-21ssh12:06:573
412034999611,7cyclictest4141509-21ssh09:40:443
412034999611,16cyclictest1240-21ssh11:33:303
412034999611,16cyclictest1240-21ssh11:33:303
4120339996122,9cyclictest4168812-21ssh10:38:100
412034999601,9cyclictest4158089-21ssh10:15:273
412034999601,8cyclictest4165911-21ssh10:31:543
412034999601,7cyclictest5522-21ssh11:42:223
412034999601,7cyclictest5522-21ssh11:42:223
412034999601,7cyclictest4174900-21ssh10:50:393
412034999601,7cyclictest4144879-21ssh09:48:113
412034999601,7cyclictest4134643-21ssh09:26:293
412034999601,7cyclictest28923-21ssh12:31:183
412034999601,6cyclictest4170836-21ssh10:42:113
412034999601,5cyclictest4180870-21sshd11:03:223
412034999601,18cyclictest4189706-21ssh11:21:423
412034999601,15cyclictest4193604-21wc11:30:033
4120339996028,8cyclictest4163697-21ssh10:27:170
4120339996022,6cyclictest4125231-21modprobe08:40:010
412034999591,6cyclictest7719-21ssh11:46:583
412034999591,6cyclictest4148564-21ssh09:55:373
412034999591,5cyclictest4155740-21ssh10:10:323
412034999591,19cyclictest14945-21ssh12:02:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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