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2026-04-19 - 14:55

OSADL QA Farm on Real-time of Mainline Linux

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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 
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack9slot4s (updated Sun Apr 19, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151779912251201,20cyclictest0-21swapper/107:25:101
151769911121083,23cyclictest0-21swapper/007:25:120
151769911061070,33cyclictest10050irq/91-xhci_hcd08:01:080
151032660613,31sleep10-21swapper/107:24:481
148752524477,32sleep00-21swapper/007:22:240
97762880,5sleep11517799cyclictest12:15:311
190152790,2sleep00-21swapper/008:55:300
275702590,22sleep03-21ksoftirqd/010:54:430
63202580,2sleep06321-21sh11:39:350
1517699461,22cyclictest11155-21runrttasks09:30:180
15177994416,6cyclictest22-21ksoftirqd/112:01:351
1517699439,14cyclictest2225-21dbus-daemon12:52:250
15177994211,21cyclictest22-21ksoftirqd/109:29:301
128682421,4sleep112879-21sh09:31:431
15177994114,16cyclictest22-21ksoftirqd/110:01:501
1517699411,22cyclictest1328-21hddtemp_smartct09:20:150
15177994016,7cyclictest22-21ksoftirqd/110:10:331
15177994015,15cyclictest22-21ksoftirqd/110:32:201
15177994015,15cyclictest22-21ksoftirqd/110:18:451
15177994015,10cyclictest22-21ksoftirqd/110:35:311
15177994012,15cyclictest22-21ksoftirqd/109:13:061
1517699409,12cyclictest0-21swapper/010:38:020
40462390,23sleep03-21ksoftirqd/010:30:120
26772391,34sleep12773-21memory11:35:231
1517799395,18cyclictest3029-1kworker/1:1H11:15:141
15177993915,8cyclictest22-21ksoftirqd/107:45:461
15177993915,6cyclictest22-21ksoftirqd/112:40:221
15177993915,6cyclictest22-21ksoftirqd/110:59:071
15177993914,14cyclictest22-21ksoftirqd/111:34:421
1517699397,14cyclictest15629-21wget11:15:180
1517699391,21cyclictest317-21sshd11:33:030
15176993910,13cyclictest28923-21seq07:59:050
221702381,5sleep122213-21ssh11:55:241
15177993816,8cyclictest22-21ksoftirqd/112:13:581
15177993816,7cyclictest22-21ksoftirqd/112:39:261
15177993816,7cyclictest22-21ksoftirqd/109:52:221
15177993816,7cyclictest22-21ksoftirqd/107:51:061
15177993816,6cyclictest22-21ksoftirqd/110:25:231
15177993816,6cyclictest22-21ksoftirqd/109:16:311
15177993815,8cyclictest22-21ksoftirqd/107:40:521
15177993815,7cyclictest22-21ksoftirqd/109:57:111
15177993813,15cyclictest22-21ksoftirqd/111:29:211
15177993812,15cyclictest22-21ksoftirqd/112:31:321
15177993811,16cyclictest22-21ksoftirqd/111:20:351
1517699381,7cyclictest2391-21/usr/sbin/munin09:55:120
15177993716,6cyclictest22-21ksoftirqd/109:21:121
15177993715,8cyclictest22-21ksoftirqd/110:07:471
15177993715,7cyclictest22-21ksoftirqd/109:43:051
15177993715,7cyclictest22-21ksoftirqd/108:00:391
15177993714,8cyclictest22-21ksoftirqd/108:30:091
15177993714,7cyclictest22-21ksoftirqd/108:07:271
15177993714,6cyclictest22-21ksoftirqd/112:54:211
15177993713,15cyclictest22-21ksoftirqd/109:47:011
15177993712,14cyclictest22-21ksoftirqd/109:38:071
15177993711,15cyclictest22-21ksoftirqd/111:00:511
1517699372,7cyclictest14356-21memory10:40:220
1517699372,5cyclictest19231-21/usr/sbin/munin10:45:220
1517699372,14cyclictest396-21diskstats12:40:150
15176993710,7cyclictest28464-21grep10:55:140
15177993615,7cyclictest22-21ksoftirqd/112:25:571
15177993615,6cyclictest22-21ksoftirqd/111:40:411
15177993615,6cyclictest22-21ksoftirqd/110:54:321
15177993614,6cyclictest22-21ksoftirqd/111:10:181
15177993614,6cyclictest22-21ksoftirqd/110:45:151
15177993613,6cyclictest22-21ksoftirqd/112:05:121
15177993613,6cyclictest22-21ksoftirqd/112:05:111
15177993611,6cyclictest22-21ksoftirqd/111:07:011
1517699362,6cyclictest25424-21iostat_ios11:25:210
1517699361,6cyclictest9037-21runrttasks09:28:090
1517699361,15cyclictest28394-21cron10:21:010
33132351,4sleep03332-21ssh10:29:340
15177993515,6cyclictest22-21ksoftirqd/112:20:051
15177993512,8cyclictest20273-21ssh11:53:461
15176993525,6cyclictest23424-21ssh11:23:300
1517699351,20cyclictest17495-21ssh09:36:230
1517699351,15cyclictest23425-21chrt09:10:030
107662351,3sleep081rcu_preempt11:10:170
269322341,29sleep026943-21irqstats12:00:220
1517799348,10cyclictest22-21ksoftirqd/110:40:211
1517799345,7cyclictest19476-21idleruntime-cro09:00:001
15177993413,7cyclictest22-21ksoftirqd/109:06:341
15177993413,7cyclictest22-21ksoftirqd/109:04:291
15177993413,6cyclictest22-21ksoftirqd/110:20:121
15177993412,8cyclictest15174-21cyclictest11:48:021
1517699342,6cyclictest22981-21wget12:30:130
1517699341,13cyclictest5132-21ssh12:10:410
72042331,28sleep07221-21diskstats11:40:140
252122331,28sleep025223-21ssh11:58:560
232722331,4sleep02695-21snmpd07:43:530
1517799338,11cyclictest11564-21packagekitd12:45:281
1517699335,8cyclictest13039-21ntp_states10:05:260
15176993323,6cyclictest31751-21ssh12:05:190
15176993323,6cyclictest31751-21ssh12:05:190
1517699331,14cyclictest32158-21ssh09:51:370
11192331,4sleep01133-21irqstats11:00:200
197842320,4sleep041ktimersoftd/010:12:330
1517799329,13cyclictest22-21ksoftirqd/108:47:451
15176993221,6cyclictest28633-21ssh09:15:130
15176993215,13cyclictest28845-21ssh09:48:500
166962311,4sleep016706-21ssh12:23:280
1517799319,7cyclictest22-21ksoftirqd/108:40:171
1517799318,8cyclictest22-21ksoftirqd/107:36:361
1517799313,9cyclictest6771-21diskstats08:25:141
15177993111,6cyclictest22-21ksoftirqd/108:12:201
1517799309,7cyclictest8731-21kworker/1:208:54:511
1517799307,8cyclictest22-21ksoftirqd/108:17:001
1517799302,9cyclictest10718-21fw_packets08:35:171
1517799302,14cyclictest17500-21memory07:30:041
1517699302,7cyclictest2970-21df08:15:130
124472301,26sleep012540-21memory11:45:230
53172291,5sleep00-21swapper/011:05:060
306212291,5sleep00-21swapper/012:37:390
15177992911,13cyclictest27735-21grep07:55:151
15176992920,6cyclictest13025-21wc12:20:000
15176992918,6cyclictest24741-21grep07:45:290
99612281,5sleep00-21swapper/010:02:200
325732281,5sleep00-21swapper/008:05:360
202002281,5sleep00-21swapper/009:40:070
193592281,5sleep00-21swapper/007:32:480
173612281,5sleep00-21swapper/008:52:360
1517699281,4cyclictest81rcu_preempt07:51:060
15176992810,5cyclictest10717-21/usr/sbin/munin08:35:160
78142271,5sleep00-21swapper/008:26:080
60882271,5sleep00-21swapper/008:22:450
231712271,5sleep00-21swapper/009:09:170
22582271,5sleep00-21swapper/008:13:110
1517799271,18cyclictest0-21swapper/108:23:381
15176992718,5cyclictest3-21ksoftirqd/011:53:230
1517699271,4cyclictest81rcu_preempt12:25:570
1517699271,4cyclictest81rcu_preempt10:19:110
211022261,4sleep00-21swapper/009:02:150
1517699269,13cyclictest14961-21mailstats08:45:280
1517699261,4cyclictest81rcu_preempt08:30:090
1517699252,8cyclictest5214-21diskstats12:45:160
15176992516,5cyclictest20528-21grep07:35:210
15176992512,9cyclictest13207-21grep08:40:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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