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2025-12-20 - 20:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
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 rackeslot8s.osadl.org (updated Sat Dec 20, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1587909911551,1148cyclictest353997-21sleep09:39:593
158790993870,384cyclictest186595-21turbostat07:34:553
158790993870,383cyclictest251064-21turbostat08:24:553
158790993630,360cyclictest283207-21turbostat08:49:553
158790992920,289cyclictest218999-21turbostat07:59:553
158790992900,286cyclictest315231-21turbostat09:14:553
158790992118,1cyclictest0-21swapper/312:40:013
301798180,1rtkit-daemon0-21swapper/107:57:331
4900802174,10sleep0490964-21tr11:25:180
15879099172,11cyclictest283201-21turbostat08:45:003
15879099171,12cyclictest527951-21taskset11:55:143
15879099165,8cyclictest3991322sleep310:15:133
15879099161,7cyclictest0-21swapper/309:25:133
158790991613,1cyclictest0-21swapper/310:45:453
158790991613,1cyclictest0-21swapper/310:20:183
2987372150,5sleep2300814-21grep08:55:192
15879099157,6cyclictest418169-21turbostat10:34:553
158790991513,1cyclictest0-21swapper/312:34:563
158790991513,1cyclictest0-21swapper/312:23:583
158790991513,1cyclictest0-21swapper/308:29:323
158790991512,1cyclictest0-21swapper/311:01:033
158790991512,1cyclictest0-21swapper/309:55:003
158790991512,1cyclictest0-21swapper/309:15:293
158790991512,1cyclictest0-21swapper/307:28:213
4374082140,6sleep1437625-21sed10:45:001
3157302144,5sleep1315763-21apt-get09:10:121
15879099145,7cyclictest1614512sleep307:10:193
158790991413,0cyclictest0-21swapper/307:51:383
158790991413,0cyclictest0-21swapper/307:46:443
158790991412,1cyclictest0-21swapper/312:27:483
158790991412,1cyclictest0-21swapper/311:08:483
158790991412,1cyclictest0-21swapper/310:52:203
158790991412,1cyclictest0-21swapper/310:43:413
158790991412,1cyclictest0-21swapper/310:05:213
158790991412,1cyclictest0-21swapper/309:08:463
158790991412,1cyclictest0-21swapper/307:23:123
158790991412,1cyclictest0-21swapper/307:15:053
158790991412,0cyclictest0-21swapper/311:33:503
158790991411,1cyclictest0-21swapper/311:23:243
158790991411,1cyclictest0-21swapper/310:28:423
158790991411,1cyclictest0-21swapper/310:01:333
158790991411,1cyclictest0-21swapper/308:01:103
15879099141,10cyclictest545893-21taskset12:05:203
15879099141,10cyclictest481202-21taskset11:15:193
15879099141,10cyclictest250686-21chrt08:15:333
15879099141,10cyclictest250686-21chrt08:15:323
15879099141,10cyclictest193224-21taskset07:35:033
5234092130,1sleep30-21swapper/311:50:203
15879099134,6cyclictest295735-21taskset08:52:033
15879099131,9cyclictest559203-21chrt12:15:283
15879099131,9cyclictest520789-21taskset11:45:593
15879099131,9cyclictest514499-21taskset11:42:363
15879099131,9cyclictest494759-21taskset11:25:253
15879099131,9cyclictest430512-21chrt10:35:253
15879099131,9cyclictest430512-21chrt10:35:243
15879099131,9cyclictest3606522sleep309:45:133
15879099131,9cyclictest328552-21taskset09:20:073
15879099131,9cyclictest302028-21taskset08:55:473
15879099131,9cyclictest238497-21taskset08:10:033
158790991312,0cyclictest0-21swapper/310:11:493
158790991312,0cyclictest0-21swapper/308:30:453
158790991311,1cyclictest0-21swapper/310:59:293
158790991311,1cyclictest0-21swapper/309:44:403
15879099131,10cyclictest476175-21turbostat11:15:003
15879099131,10cyclictest341349-21taskset09:30:023
158790991310,1cyclictest0-21swapper/312:03:323
158790991310,1cyclictest0-21swapper/311:35:293
158790991310,1cyclictest0-21swapper/309:56:213
15879099130,10cyclictest205586-21chrt07:40:383
4815972121,8sleep0481710-21ntpq11:15:210
15879099121,9cyclictest552246-21taskset12:10:193
15879099121,9cyclictest270585-21chrt08:35:093
15879099121,8cyclictest308805-21turbostat09:05:003
15879099121,8cyclictest232105-21taskset08:05:113
301798110,6rtkit-daemon540624-21apt-get12:05:111
301798110,4rtkit-daemon636-21snmpd11:46:381
301798110,3rtkit-daemon165271-21munin-node10:21:151
301798110,3rtkit-daemon165271-21munin-node08:07:041
301798110,2rtkit-daemon339040-21kthreadcore09:25:191
2062202111,7sleep1206376-21diskstats07:45:141
5379772101,5sleep2539305-21memory12:00:182
5277692101,5sleep1527802-21apt-get11:55:131
4761522100,2sleep00-21swapper/011:15:000
3078962101,5sleep2307952-21ntp_states09:00:202
301798100,7rtkit-daemon430-21avahi-daemon09:09:001
301798100,5rtkit-daemon353561-21sed09:35:231
301798100,5rtkit-daemon246351-21irqstats08:15:171
301798100,5rtkit-daemon246351-21irqstats08:15:161
558863290,6sleep1559014-21sort12:15:231
547454291,5sleep2548441-21irqstats12:10:162
412391290,2sleep0171rcu_preempt10:25:160
30179890,5rtkit-daemon448-21wpa_supplicant10:17:201
30179890,5rtkit-daemon3205-21sendmail-mta10:57:141
30179890,5rtkit-daemon3205-21sendmail-mta10:07:391
30179890,4rtkit-daemon582824-21cut12:35:211
30179890,4rtkit-daemon492237-21cut11:25:191
30179890,4rtkit-daemon372193-21memory09:50:221
30179890,4rtkit-daemon365954-21sed09:45:211
30179890,4rtkit-daemon328655-21grep09:20:141
30179890,4rtkit-daemon282341-21ntp_states08:40:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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