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2026-05-08 - 10:19

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 Fri May 08, 2026 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
80859912261195,26cyclictest0-21swapper/119:25:121
79812655611,29sleep10-21swapper/119:24:271
77342466417,33sleep00-21swapper/019:21:540
808499171138,29cyclictest0-21swapper/019:25:130
808599393,6cyclictest22-21ksoftirqd/100:05:251
8085993921,8cyclictest22-21ksoftirqd/121:50:181
808599391,6cyclictest22-21ksoftirqd/120:25:281
808599391,6cyclictest22-21ksoftirqd/120:05:201
8085993819,8cyclictest22-21ksoftirqd/122:08:131
808599381,7cyclictest22-21ksoftirqd/119:40:151
808599381,7cyclictest22-21ksoftirqd/100:10:121
8085993817,8cyclictest22-21ksoftirqd/121:20:231
808599381,6cyclictest22-21ksoftirqd/119:35:111
808599381,6cyclictest22-21ksoftirqd/119:30:191
808599381,6cyclictest22-21ksoftirqd/100:25:141
8085993810,9cyclictest22-21ksoftirqd/123:10:111
8085993810,4cyclictest81rcu_preempt20:00:251
198462380,2sleep119845-21fschecks_time22:45:151
808599371,7cyclictest22-21ksoftirqd/123:20:121
808599371,7cyclictest22-21ksoftirqd/121:30:281
808599371,7cyclictest22-21ksoftirqd/121:30:271
808599371,7cyclictest22-21ksoftirqd/121:15:251
808599371,7cyclictest22-21ksoftirqd/120:35:101
808599371,7cyclictest22-21ksoftirqd/120:10:101
808599371,6cyclictest22-21ksoftirqd/123:50:101
808599371,6cyclictest22-21ksoftirqd/120:40:301
808599371,6cyclictest22-21ksoftirqd/120:30:291
808599371,6cyclictest22-21ksoftirqd/120:20:101
808599371,6cyclictest22-21ksoftirqd/119:55:121
808599371,6cyclictest22-21ksoftirqd/100:30:111
808599371,6cyclictest22-21ksoftirqd/100:00:121
808599362,4cyclictest0-21swapper/120:15:301
8085993620,4cyclictest22-21ksoftirqd/123:07:051
808599361,7cyclictest22-21ksoftirqd/100:35:131
808599361,6cyclictest22-21ksoftirqd/123:35:111
808599361,6cyclictest22-21ksoftirqd/123:30:151
808599361,6cyclictest22-21ksoftirqd/123:15:131
808599361,6cyclictest22-21ksoftirqd/119:50:141
808599361,6cyclictest22-21ksoftirqd/100:40:131
808599361,5cyclictest22-21ksoftirqd/121:40:131
808599361,5cyclictest22-21ksoftirqd/121:05:171
36362360,3sleep1201rcuc/100:55:001
266092362,30sleep126704-21users21:35:291
8085993521,4cyclictest22-21ksoftirqd/121:48:521
808599351,5cyclictest22-21ksoftirqd/121:25:231
808499349,13cyclictest30413-21taskset00:40:110
70962342,4sleep17123-21hddtemp_smartct20:45:171
260922341,29sleep026224-21fschecks_time20:10:150
20262341,29sleep02041-21/usr/sbin/munin00:50:140
110732341,5sleep10-21swapper/120:55:221
8085993323,6cyclictest9922-21/usr/sbin/munin23:45:131
808599331,7cyclictest31523-21kworker/1:022:22:561
808499335,4cyclictest81rcu_preempt21:15:420
128552331,4sleep012936-21python22:25:250
808599322,4cyclictest81rcu_preempt00:16:011
808599321,5cyclictest22-21ksoftirqd/119:45:161
808499322,17cyclictest0-21swapper/000:21:120
8084993210,18cyclictest27341-21/usr/sbin/munin21:40:160
8084993210,11cyclictest17151-21grep19:45:240
30952321,4sleep13104-21iostat_ios22:00:191
214352321,5sleep00-21swapper/019:55:380
808599316,4cyclictest81rcu_preempt20:50:511
8085993116,4cyclictest22-21ksoftirqd/122:15:231
8085993115,4cyclictest22-21ksoftirqd/122:10:211
808599311,4cyclictest81rcu_preempt23:40:111
808599311,4cyclictest81rcu_preempt22:55:211
808599311,4cyclictest81rcu_preempt22:40:151
808599311,4cyclictest81rcu_preempt22:30:231
808599311,4cyclictest81rcu_preempt00:24:591
808499314,13cyclictest18079-21proc_pri00:05:250
808499312,15cyclictest27070-21/usr/sbin/munin23:05:120
8084993112,5cyclictest2546-21perl23:25:160
79922310,8sleep0808499cyclictest22:15:010
247292311,5sleep00-21swapper/022:58:060
808599306,4cyclictest81rcu_preempt22:50:271
8085993016,4cyclictest22-21ksoftirqd/100:47:431
8085993015,12cyclictest22-21ksoftirqd/123:25:281
808599301,4cyclictest81rcu_preempt21:00:111
8085993012,6cyclictest22-21ksoftirqd/122:25:231
808499307,4cyclictest81rcu_preempt23:30:140
808499304,24cyclictest0-21swapper/022:50:100
808499302,4cyclictest81rcu_preempt20:50:170
808499302,16cyclictest19914-21/usr/sbin/munin21:20:120
808499302,15cyclictest15624-21df_inode00:00:130
8084993017,7cyclictest6209-21diskstats23:35:140
808499301,4cyclictest81rcu_preempt21:31:170
808499301,4cyclictest81rcu_preempt21:31:170
8084993012,5cyclictest30220-21munin-run00:40:000
8084993012,5cyclictest22486-21/usr/sbin/munin21:25:230
8084993011,5cyclictest32134-21memory20:25:220
321072301,5sleep00-21swapper/023:16:340
292542301,5sleep00-21swapper/020:18:400
205172301,5sleep00-21swapper/000:12:060
82302291,5sleep00-21swapper/020:48:500
8085992922,4cyclictest26815-21ls23:04:591
8085992916,7cyclictest801-21diskstats21:55:151
808599291,4cyclictest81rcu_preempt23:55:231
808599291,3cyclictest0-21swapper/121:14:281
808499299,5cyclictest29133-21df23:10:130
808499295,12cyclictest0-21swapper/021:45:490
808499292,14cyclictest3138-21df_inode20:35:130
808499292,14cyclictest16692-21python22:35:280
808499292,14cyclictest0-21swapper/019:31:250
808499292,13cyclictest11565-21gdbus22:05:210
8084992916,7cyclictest8449-21diskstats22:15:170
808499291,5cyclictest81rcu_preempt20:00:190
808499291,4cyclictest81rcu_preempt19:50:200
8084992911,6cyclictest14793-21seq23:56:170
8084992910,5cyclictest14734-21cut19:40:130
8084992910,5cyclictest13367-21grep19:35:210
266042291,5sleep00-21swapper/023:02:560
262232291,5sleep00-21swapper/000:27:420
224902291,5sleep00-21swapper/000:18:050
19292291,5sleep00-21swapper/021:56:580
192612291,5sleep00-21swapper/022:44:470
154462291,5sleep00-21swapper/022:34:170
91872281,5sleep00-21swapper/023:41:320
808599281,4cyclictest81rcu_preempt22:35:271
808499282,4cyclictest81rcu_preempt00:34:400
808499281,4cyclictest81rcu_preempt20:40:450
808499281,14cyclictest25177-21/usr/sbin/munin20:05:270
808499281,14cyclictest20040-21iostat22:45:190
808499281,13cyclictest11844-21df23:50:100
808499281,13cyclictest11102-21taskset23:46:580
312552281,5sleep00-21swapper/020:24:440
157532281,5sleep00-21swapper/021:08:480
139402281,5sleep00-21swapper/021:04:260
808499272,14cyclictest0-21swapper/020:59:350
808499271,18cyclictest0-21swapper/000:47:520
808499271,13cyclictest32161-21switchtime21:50:290
808499271,13cyclictest11565-21gdbus20:32:520
808499271,12cyclictest3114-21uname22:00:200
8084992710,5cyclictest528-21fschecks_count23:20:150
271222271,4sleep00-21swapper/021:39:420
808499261,13cyclictest11565-21gdbus22:20:350
808499261,12cyclictest16120-21wget21:10:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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