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2026-08-09 - 21:59

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 Aug 09, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132439912711228,36cyclictest0-21swapper/007:25:210
132449912221191,26cyclictest13776-21grep07:25:141
132449910801071,6cyclictest3184-21users11:10:311
118032618538,63sleep00-21swapper/007:20:160
130172554510,29sleep10-21swapper/107:23:121
1324399248221,22cyclictest0-21swapper/011:10:310
261812890,4sleep0111rcuc/007:55:240
138752491,30sleep113907-21fschecks_count10:15:161
1324399381,23cyclictest6882-21ntp_states09:55:250
1324399371,23cyclictest24391-21/usr/sbin/munin09:15:280
1324399363,3cyclictest81rcu_preempt11:28:480
195422351,4sleep119543-21cat07:39:561
13244993511,5cyclictest81rcu_preempt11:52:011
205302340,2sleep120529-21sendmail_mailqu09:05:281
19372341,6sleep12695-21snmpd09:44:071
149752341,4sleep011565-21gdbus10:16:460
1324499341,10cyclictest7847-21iostat_ios12:50:201
1324399343,16cyclictest21764-21diskstats09:10:150
291672332,26sleep00-21swapper/012:20:260
136652331,3sleep10-21swapper/108:48:561
1324499339,9cyclictest1526-21proc_pri08:15:251
1324499339,8cyclictest2225-21dbus-daemon11:59:271
1324499332,5cyclictest81rcu_preempt11:45:191
13244993318,4cyclictest22-21ksoftirqd/107:43:431
89662321,4sleep10-21swapper/111:26:371
181402321,27sleep018292-21fschecks_time07:35:160
140602320,4sleep041ktimersoftd/011:40:240
1324499322,4cyclictest81rcu_preempt09:45:241
13244993223,6cyclictest2695-21snmpd11:19:501
13244993219,4cyclictest22-21ksoftirqd/107:46:351
13244993216,6cyclictest22-21ksoftirqd/109:22:491
1324399321,3cyclictest81rcu_preempt11:48:580
1324399321,17cyclictest24346-21cron12:10:000
4692311,5sleep1477-21ls08:15:001
1324499316,4cyclictest81rcu_preempt08:06:091
1324499314,4cyclictest81rcu_preempt10:01:001
13244993122,5cyclictest17076-21cat07:30:311
13243993119,8cyclictest0-21swapper/011:30:140
13243993115,5cyclictest4464-21df_inode09:50:140
1324399311,4cyclictest81rcu_preempt10:22:230
1324399311,4cyclictest81rcu_preempt07:40:160
13243993112,5cyclictest19877-21df_inode09:05:150
13243993111,5cyclictest19462-21irqstats11:55:180
19552301,5sleep00-21swapper/008:15:500
135152301,5sleep00-21swapper/008:47:220
1324499304,11cyclictest16075-21iostat_ios10:20:191
1324499302,7cyclictest0-21swapper/110:49:221
1324499301,4cyclictest81rcu_preempt09:03:341
1324399303,15cyclictest0-21swapper/007:50:160
1324399303,14cyclictest16215-21df07:30:170
13243993012,5cyclictest6905-21hddtemp_smartct08:30:190
1324399301,16cyclictest6491-21timerandwakeup12:45:290
13243993011,6cyclictest11564-21packagekitd08:50:120
13243993010,15cyclictest207892chrt10:33:290
111792301,5sleep00-21swapper/010:06:200
326842291,5sleep00-21swapper/008:12:250
316042291,5sleep10-21swapper/112:27:131
302082291,5sleep00-21swapper/010:58:420
302082291,5sleep00-21swapper/010:58:420
285272291,5sleep00-21swapper/009:26:550
248392291,5sleep10-21swapper/109:17:471
245832291,5sleep00-21swapper/010:43:440
24172291,3sleep02503-21python12:35:280
240522291,5sleep10-21swapper/112:07:001
223632291,5sleep10-21swapper/112:03:561
19082291,5sleep00-21swapper/009:43:510
173552291,5sleep00-21swapper/008:58:160
1324499297,5cyclictest81rcu_preempt10:40:211
1324499294,4cyclictest81rcu_preempt12:30:041
1324499294,4cyclictest81rcu_preempt08:52:031
1324499294,19cyclictest28922-21diskstats10:55:151
1324499294,19cyclictest28922-21diskstats10:55:151
1324499293,19cyclictest19826-21iostat_ios10:30:211
1324499293,13cyclictest24752-21users07:50:311
1324499291,4cyclictest81rcu_preempt10:51:551
13244992914,5cyclictest22-21ksoftirqd/112:44:461
13244992914,4cyclictest81rcu_preempt11:40:241
1324499291,24cyclictest11085-21users10:05:311
13244992912,13cyclictest0-21swapper/111:35:261
1324399297,10cyclictest0-21swapper/010:54:240
1324399292,14cyclictest18006-21python11:50:290
1324399292,12cyclictest11620-21df11:35:150
1324399291,13cyclictest29350-21/usr/sbin/munin08:05:130
13243992910,6cyclictest25706-21ntp_states10:45:250
1324399290,4cyclictest81rcu_preempt09:32:070
115712291,5sleep00-21swapper/008:41:420
115712291,5sleep00-21swapper/008:41:410
97012281,5sleep10-21swapper/108:36:591
74212280,3sleep17423-21cron11:25:011
56652281,5sleep10-21swapper/109:52:441
39922281,5sleep00-21swapper/009:49:490
324612281,5sleep10-21swapper/109:38:481
315342281,5sleep00-21swapper/012:26:290
290442281,5sleep00-21swapper/008:03:350
268572281,5sleep00-21swapper/009:24:020
232332281,5sleep00-21swapper/007:49:030
228042281,5sleep10-21swapper/109:11:081
226662281,5sleep00-21swapper/010:38:320
223182280,4sleep041ktimersoftd/012:03:260
190452281,5sleep00-21swapper/010:29:510
170962281,5sleep10-21swapper/108:55:341
15712281,5sleep10-21swapper/111:09:091
15272281,5sleep00-21swapper/011:08:420
1324499286,4cyclictest81rcu_preempt09:30:361
1324499282,4cyclictest81rcu_preempt12:16:131
13244992821,4cyclictest40250irq/92-i91512:35:271
1324499281,5cyclictest0-21swapper/110:25:221
1324499281,4cyclictest81rcu_preempt07:59:241
13244992812,4cyclictest22-21ksoftirqd/108:20:281
1324399282,13cyclictest4962-21grep08:25:170
1324399282,13cyclictest12288-21iostat10:10:180
1324399282,12cyclictest6453-21needreboot11:20:210
1324399282,12cyclictest3286-21runrttasks12:16:490
1324399281,3cyclictest81rcu_preempt09:37:410
13243992811,5cyclictest5547-21munin-run11:20:010
13243992810,6cyclictest5120-21taskset12:44:240
13243992810,5cyclictest31782-21users11:00:280
67722271,5sleep10-21swapper/112:46:461
1324499274,3cyclictest81rcu_preempt08:42:461
1324499274,3cyclictest81rcu_preempt08:42:461
13244992714,10cyclictest22-21ksoftirqd/111:00:281
1324499271,23cyclictest28302-21aten_r4power_cu12:20:101
1324399279,6cyclictest8547-21taskset12:50:410
1324399271,14cyclictest17956-21cat09:00:140
1324399271,13cyclictest8282-21chrt08:35:080
1324399271,13cyclictest24548-21aten_r4power_en12:10:110
13243992710,4cyclictest3667-21mailstats08:20:260
129932271,5sleep10-21swapper/110:10:411
108522271,5sleep10-21swapper/111:31:451
1324499269,4cyclictest22-21ksoftirqd/112:10:111
13244992617,6cyclictest22-21ksoftirqd/108:25:501
1324499259,5cyclictest40250irq/92-i91508:00:221
1324499258,5cyclictest40250irq/92-i91509:55:151
1324499252,4cyclictest22-21ksoftirqd/108:32:131
1324499252,17cyclictest21691-21iostat10:35:191
13244992518,4cyclictest22-21ksoftirqd/109:25:241
1324399251,20cyclictest32670-21kernelversion12:30:220
1324399248,4cyclictest0-21swapper/010:00:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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