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2026-06-23 - 19:54

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 Tue Jun 23, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6929912261213,10cyclictest0-21swapper/007:27:170
6929911781140,17cyclictest28497-21smartctl11:25:260
6939911201090,23cyclictest32088-21hddtemp_smartct10:10:181
3432578531,32sleep00-21swapper/007:21:590
4422555504,30sleep10-21swapper/107:22:591
69399198189,6cyclictest0-21swapper/107:27:171
69299139115,20cyclictest0-21swapper/010:10:180
69399124116,5cyclictest0-21swapper/111:25:261
29912990,2sleep10-21swapper/107:30:021
309512810,4sleep041ktimersoftd/008:40:250
140582540,5sleep169399cyclictest09:20:291
72712390,4sleep169399cyclictest10:30:161
693993923,6cyclictest22-21ksoftirqd/107:57:471
693993922,6cyclictest22-21ksoftirqd/109:28:071
7982381,5sleep111565-21gdbus08:45:521
69399389,5cyclictest81rcu_preempt09:00:001
69399389,5cyclictest81rcu_preempt08:59:591
693993823,5cyclictest22-21ksoftirqd/112:33:221
693993821,6cyclictest22-21ksoftirqd/112:05:281
693993821,6cyclictest22-21ksoftirqd/109:32:591
693993722,6cyclictest22-21ksoftirqd/111:07:551
693993722,6cyclictest22-21ksoftirqd/109:16:571
693993722,5cyclictest22-21ksoftirqd/112:24:491
693993721,6cyclictest22-21ksoftirqd/112:36:381
693993721,6cyclictest22-21ksoftirqd/112:36:381
693993721,6cyclictest22-21ksoftirqd/111:42:211
693993720,6cyclictest22-21ksoftirqd/111:56:241
693993720,6cyclictest22-21ksoftirqd/111:11:001
693993621,6cyclictest22-21ksoftirqd/112:26:211
693993621,6cyclictest22-21ksoftirqd/112:10:441
693993621,6cyclictest22-21ksoftirqd/109:40:091
693993621,5cyclictest22-21ksoftirqd/111:54:461
693993620,6cyclictest22-21ksoftirqd/110:19:101
693993620,6cyclictest22-21ksoftirqd/109:13:071
693993620,6cyclictest22-21ksoftirqd/109:00:201
693993620,5cyclictest22-21ksoftirqd/111:30:111
69299365,5cyclictest81rcu_preempt12:40:000
69299365,5cyclictest81rcu_preempt12:40:000
693993521,5cyclictest22-21ksoftirqd/108:03:041
693993521,5cyclictest22-21ksoftirqd/107:40:551
693993520,5cyclictest22-21ksoftirqd/112:43:151
693993520,5cyclictest22-21ksoftirqd/112:03:021
693993520,5cyclictest22-21ksoftirqd/111:22:531
693993520,5cyclictest22-21ksoftirqd/109:54:401
693993520,5cyclictest22-21ksoftirqd/108:26:111
693993517,5cyclictest22-21ksoftirqd/111:49:171
69299351,14cyclictest90172uniq10:35:150
693993419,5cyclictest22-21ksoftirqd/108:50:031
693993317,6cyclictest22-21ksoftirqd/111:15:061
693993316,6cyclictest22-21ksoftirqd/111:01:191
692993315,8cyclictest23146-21iostat_ios08:20:190
69299331,4cyclictest81rcu_preempt10:55:220
69399322,8cyclictest19248-21ntp_states09:35:241
693993217,5cyclictest22-21ksoftirqd/107:38:501
693993216,6cyclictest22-21ksoftirqd/110:50:541
69399321,14cyclictest26490-21grep08:30:111
219412321,5sleep02225-21dbus-daemon09:44:050
69399318,10cyclictest0-21swapper/110:59:271
69399313,13cyclictest0-21swapper/109:45:481
69299313,12cyclictest8536-21cpuspeed_turbos12:00:120
692993110,6cyclictest26148-21turbostat.cron08:29:590
49672311,5sleep00-21swapper/008:58:570
49672311,5sleep00-21swapper/008:58:560
275992311,5sleep00-21swapper/009:59:270
100912311,5sleep10-21swapper/110:37:051
693993015,4cyclictest22-21ksoftirqd/112:45:291
693993014,5cyclictest22-21ksoftirqd/110:41:151
69399301,14cyclictest28812-21/usr/sbin/munin08:35:231
693993011,15cyclictest22836-21df_inode08:20:131
69299301,4cyclictest22647-21fschecks_time09:45:160
222632301,5sleep00-21swapper/008:18:590
184452301,5sleep00-21swapper/008:08:170
162972301,4sleep00-21swapper/009:29:060
84402291,5sleep10-21swapper/109:05:491
77852291,4sleep07794-21diskstats07:40:130
69399296,8cyclictest12833-21sshd07:53:381
69399292,12cyclictest30316-21irqstats10:05:201
69399291,8cyclictest3286-21runrttasks10:45:501
693992913,6cyclictest22-21ksoftirqd/108:05:251
69299298,6cyclictest14536-21grep09:25:010
69299297,11cyclictest5142-21cstates10:25:130
69299297,11cyclictest26510-21tr08:30:110
69299291,4cyclictest81rcu_preempt08:54:190
69299291,4cyclictest81rcu_preempt07:53:410
692992914,7cyclictest7338-21munin-run07:40:010
69299291,14cyclictest32229-21/usr/sbin/munin08:45:140
44982291,4sleep00-21swapper/010:22:310
312282291,5sleep00-21swapper/010:07:580
292982291,5sleep10-21swapper/110:02:251
139522291,5sleep00-21swapper/010:47:590
137592291,5sleep00-21swapper/012:14:450
122242291,5sleep00-21swapper/009:16:010
84672281,5sleep00-21swapper/010:34:450
69399286,7cyclictest3286-21runrttasks11:40:011
69399284,7cyclictest22-21ksoftirqd/108:40:521
69399282,7cyclictest5144-21wc10:25:131
69299284,10cyclictest6326-21latency_hist11:55:000
69299283,18cyclictest25797-21munin-run09:55:000
69299282,12cyclictest13424-21diskstats07:55:140
692992817,6cyclictest7570-21sort11:55:260
69299281,4cyclictest81rcu_preempt09:13:440
69299281,15cyclictest8355-21grep09:05:260
692992811,5cyclictest11814-21/usr/sbin/munin10:40:270
69299281,14cyclictest16146-21diskstats12:20:160
69299281,13cyclictest15407-21fschecks_count08:00:160
692992810,5cyclictest28418-21users12:50:330
692992810,5cyclictest20236-21df11:05:120
66852281,5sleep00-21swapper/009:02:030
48592281,5sleep00-21swapper/007:31:240
273612281,5sleep10-21swapper/109:56:591
269112281,5sleep00-21swapper/011:20:470
267782281,4sleep00-21swapper/012:47:540
247782281,5sleep00-21swapper/012:41:550
209162281,5sleep00-21swapper/012:30:570
196842281,5sleep00-21swapper/011:03:520
117302281,5sleep00-21swapper/012:08:060
693992712,5cyclictest22-21ksoftirqd/108:11:511
69299278,4cyclictest14434-21perl12:15:150
69299277,12cyclictest0-21swapper/011:42:490
69299274,3cyclictest81rcu_preempt10:15:220
69299274,17cyclictest28471-21diskstats08:35:150
69299274,15cyclictest0-21swapper/009:30:340
69299273,16cyclictest0-21swapper/011:47:500
4002271,5sleep00-21swapper/011:39:130
288402271,5sleep10-21swapper/112:54:511
251742271,5sleep00-21swapper/011:17:260
221592271,5sleep00-21swapper/011:10:170
190082271,5sleep00-21swapper/012:25:370
69399262,8cyclictest3286-21runrttasks10:24:301
69399261,11cyclictest14963-21/usr/sbin/munin12:15:261
69299269,5cyclictest15396-21timerandwakeup10:50:300
69299267,6cyclictest302412wc11:30:240
69299265,12cyclictest0-21swapper/007:45:120
69299265,11cyclictest81rcu_preempt09:35:160
69399255,6cyclictest22-21ksoftirqd/108:15:121
69399252,7cyclictest0-21swapper/107:46:381
69299251,15cyclictest0-21swapper/008:10:280
69299251,13cyclictest29219-21taskset10:01:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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