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2026-09-14 - 03:10

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 all highest latencies:
System rack9slot4s (updated Mon Sep 14, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150139912781235,21cyclictest15442-21df_inode19:25:130
150149912221200,16cyclictest0-21swapper/121:25:141
150149911961182,11cyclictest0-21swapper/119:25:111
148122681634,31sleep10-21swapper/119:23:271
147002595516,63sleep00-21swapper/019:22:150
1501399192173,16cyclictest0-21swapper/021:25:150
72322880,3sleep1211ktimersoftd/121:53:281
242382830,5sleep01501399cyclictest00:05:120
101332820,3sleep10-21swapper/122:00:231
270202450,7sleep11501499cyclictest21:20:161
278102440,4sleep127808-21cat00:15:011
15013993822,5cyclictest3-21ksoftirqd/021:59:070
15013993821,6cyclictest3-21ksoftirqd/020:15:280
15014993726,7cyclictest17219-21/usr/sbin/munin23:45:191
15013993721,6cyclictest3-21ksoftirqd/021:34:210
15013993721,6cyclictest3-21ksoftirqd/021:34:200
15013993721,6cyclictest3-21ksoftirqd/020:34:400
15013993721,6cyclictest3-21ksoftirqd/020:13:350
15013993621,5cyclictest3-21ksoftirqd/000:34:300
15013993619,6cyclictest3-21ksoftirqd/023:31:050
15013993619,6cyclictest3-21ksoftirqd/000:04:340
15013993614,5cyclictest22821-21munin-run21:10:000
1501499351,8cyclictest3286-21runrttasks22:49:281
15013993520,5cyclictest3-21ksoftirqd/021:01:270
1501499345,4cyclictest40250irq/92-i91522:42:491
15013993419,6cyclictest3-21ksoftirqd/021:36:320
15013993419,5cyclictest3-21ksoftirqd/023:21:540
15013993419,5cyclictest3-21ksoftirqd/022:55:330
15013993418,5cyclictest3-21ksoftirqd/023:59:280
15013993418,5cyclictest3-21ksoftirqd/000:48:030
15013993417,6cyclictest3-21ksoftirqd/021:53:380
15013993417,4cyclictest3-21ksoftirqd/023:05:240
45142331,9sleep00-21swapper/000:37:110
15013993319,5cyclictest3-21ksoftirqd/000:44:170
15013993319,4cyclictest3-21ksoftirqd/019:33:080
15013993318,5cyclictest3-21ksoftirqd/022:53:420
15013993317,5cyclictest3-21ksoftirqd/022:23:010
15013993317,5cyclictest3-21ksoftirqd/020:59:340
15013993316,5cyclictest3-21ksoftirqd/020:25:060
1501399331,20cyclictest28251-21sed19:55:270
1501399331,19cyclictest2954-21switchtime21:40:280
1501499322,5cyclictest81rcu_preempt20:20:121
1501499321,7cyclictest4021-21sed20:20:011
15013993218,4cyclictest3-21ksoftirqd/020:21:320
15013993218,4cyclictest3-21ksoftirqd/000:26:130
15013993217,5cyclictest3-21ksoftirqd/019:35:330
15013993216,6cyclictest3-21ksoftirqd/019:44:180
15013993213,6cyclictest25535-21memory21:15:230
1501399321,17cyclictest5520-21pidof21:50:000
89622311,5sleep00-21swapper/000:52:220
222342311,5sleep10-21swapper/119:40:251
1501499319,4cyclictest81rcu_preempt00:25:111
1501499312,5cyclictest22826-21pidof21:10:001
1501499312,16cyclictest14574-21watchsnmpd23:40:001
1501499311,6cyclictest3286-21runrttasks22:20:581
1501499311,4cyclictest81rcu_preempt23:51:271
1501499311,16cyclictest3030-21wc00:35:001
1501499311,16cyclictest2320-21hddtemp_smartct21:40:181
15014993110,18cyclictest12662-21mailstats20:40:271
15013993116,5cyclictest3-21ksoftirqd/023:42:570
15013993116,5cyclictest3-21ksoftirqd/022:41:450
15013993115,5cyclictest3-21ksoftirqd/023:12:570
15013993112,9cyclictest40250irq/92-i91519:50:260
1501399311,15cyclictest26831-21/usr/sbin/munin00:10:270
92462301,5sleep10-21swapper/120:31:071
64842301,5sleep10-21swapper/100:42:591
237502301,25sleep123872-21users22:35:311
1501499301,4cyclictest81rcu_preempt23:56:021
15014993010,6cyclictest39912cat23:10:171
1501499300,4cyclictest81rcu_preempt00:36:481
1501399302,14cyclictest24153-21ntp_states19:45:250
1501399302,12cyclictest11565-21gdbus22:47:400
15013993015,5cyclictest3-21ksoftirqd/021:10:470
15013993015,5cyclictest3-21ksoftirqd/020:47:490
15013993011,15cyclictest12058-21cut20:40:150
9582291,5sleep00-21swapper/023:01:440
69522291,5sleep10-21swapper/123:19:141
69032291,5sleep10-21swapper/100:45:281
69012291,5sleep00-21swapper/023:18:430
305822291,5sleep10-21swapper/120:04:021
30492291,5sleep10-21swapper/123:07:521
169732291,5sleep00-21swapper/020:53:060
169732291,5sleep00-21swapper/020:53:050
1501499295,4cyclictest81rcu_preempt19:33:371
1501499294,4cyclictest81rcu_preempt22:33:001
1501499294,4cyclictest81rcu_preempt19:59:391
1501499293,4cyclictest81rcu_preempt21:55:381
15014992920,5cyclictest13942-21needreboot22:10:211
15014992917,9cyclictest7319-21aten_r4power_vo23:20:121
1501499291,4cyclictest81rcu_preempt23:01:141
1501499291,4cyclictest81rcu_preempt20:58:051
1501399297,13cyclictest0-21swapper/023:47:310
1501399294,18cyclictest21568-21ntp_states22:30:300
1501399291,6cyclictest0-21swapper/020:00:290
15013992914,5cyclictest3-21ksoftirqd/022:17:540
15013992914,5cyclictest3-21ksoftirqd/021:20:130
1501399291,10cyclictest0-21swapper/022:25:370
141962291,5sleep00-21swapper/023:36:180
129402291,5sleep00-21swapper/022:09:020
107582291,5sleep00-21swapper/022:00:550
314622281,5sleep00-21swapper/000:24:360
209212281,5sleep10-21swapper/119:36:291
206602281,5sleep10-21swapper/121:02:141
163872281,5sleep10-21swapper/122:15:491
1501499289,15cyclictest0-21swapper/120:35:251
1501499286,4cyclictest81rcu_preempt21:36:441
1501499285,4cyclictest81rcu_preempt22:09:321
1501499284,4cyclictest81rcu_preempt19:51:341
15014992819,6cyclictest7082-21switchtime20:25:271
15014992816,7cyclictest30982-21tail00:20:281
1501399281,8cyclictest0-21swapper/023:50:260
15013992813,5cyclictest10166-21/usr/sbin/munin23:25:290
15013992812,6cyclictest3-21ksoftirqd/022:37:030
15013992812,5cyclictest3-21ksoftirqd/022:12:510
1501399281,14cyclictest32464-21runrttasks20:09:050
122902281,5sleep10-21swapper/123:31:011
111542281,5sleep00-21swapper/020:36:260
90682271,5sleep10-21swapper/100:53:291
52212271,5sleep10-21swapper/121:47:031
294572271,5sleep10-21swapper/100:18:281
1501499276,9cyclictest81rcu_preempt20:50:171
1501499276,9cyclictest81rcu_preempt20:50:171
1501499274,4cyclictest81rcu_preempt23:42:521
1501499274,4cyclictest81rcu_preempt20:13:341
1501499273,4cyclictest81rcu_preempt21:16:241
1501499273,15cyclictest0-21swapper/121:10:111
15014992720,4cyclictest28851-21iostat_ios22:50:181
15014992715,7cyclictest24067-21sed19:45:231
1501399275,4cyclictest81rcu_preempt00:20:010
106312271,4sleep10-21swapper/123:28:171
1501499265,4cyclictest81rcu_preempt20:46:311
1501499263,17cyclictest24742-21iostat_ios00:05:221
1501499259,5cyclictest40250irq/92-i91500:00:251
1501499256,3cyclictest40250irq/92-i91520:05:191
1501499252,8cyclictest30791-21diskstats21:30:161
1501499252,8cyclictest30791-21diskstats21:30:151
1501499243,17cyclictest0-21swapper/122:55:191
1501499232,17cyclictest0-21swapper/122:25:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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