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2026-07-07 - 21:12

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 Jul 07, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269772600555,30sleep10-21swapper/107:23:481
270772450359,75sleep00-21swapper/007:24:500
2714799122115,4cyclictest31561-21munin-run07:35:010
961921050,2sleep09618-21awk09:25:270
88702960,8sleep02714799cyclictest10:50:180
161652940,8sleep02714799cyclictest12:35:220
241422890,9sleep02714799cyclictest11:30:240
2714999703,8cyclictest4468-21df_inode12:05:141
2714999653,13cyclictest0-21swapper/111:30:231
27149996411,6cyclictest14731-21runrttasks11:05:231
2714999623,7cyclictest17031-21hddtemp_smartct08:20:191
2714999591,5cyclictest22166-21/usr/sbin/munin08:35:151
2714999591,5cyclictest22166-21/usr/sbin/munin08:35:151
2714999582,5cyclictest0-21swapper/110:00:241
27149995814,40cyclictest9443-21runrttasks12:17:551
2714999569,5cyclictest2924-21cat09:10:021
2714999564,11cyclictest0-21swapper/109:50:151
2714999552,9cyclictest20578-21df08:30:151
2714999552,8cyclictest26229-21df_inode08:45:141
27149995514,34cyclictest1253-21iostat_ios10:30:211
2714999542,47cyclictest0-21swapper/110:40:281
2714999542,11cyclictest0-21swapper/109:18:401
2714999542,10cyclictest0-21swapper/108:00:191
2714999541,9cyclictest19626-21sed08:25:301
27149995415,32cyclictest24169-21grep10:05:171
27149995415,32cyclictest24169-21grep10:05:161
2714999532,8cyclictest3290-21df_inode09:10:141
2714999532,8cyclictest15946-21hddtemp_smartct12:35:161
2714999532,46cyclictest0-21swapper/108:40:191
27149995312,4cyclictest0-21swapper/111:20:571
2714999527,12cyclictest0-21swapper/107:55:101
2714999524,8cyclictest8892-21iostat_ios10:50:201
2714999523,8cyclictest15901-21users08:15:281
2714999521,8cyclictest0-21swapper/109:40:221
2714999521,5cyclictest2510-21df_inode12:00:151
2714999521,46cyclictest0-21swapper/109:55:161
27149995212,5cyclictest0-21swapper/108:13:071
2714999519,7cyclictest17003-21ntpq09:45:241
2714999515,4cyclictest0-21swapper/111:10:321
2714999513,6cyclictest28412-21iostat08:50:201
2714999512,19cyclictest3286-21runrttasks09:26:121
2714999511,9cyclictest29200-21munin-run10:20:011
2714999511,10cyclictest3286-21runrttasks09:24:051
2714999504,8cyclictest32345-21iostat_ios07:35:211
27149995021,25cyclictest28017-21processes11:40:261
27149995013,32cyclictest0-21swapper/111:59:031
27149995012,4cyclictest0-21swapper/112:12:471
27149995011,4cyclictest0-21swapper/111:36:521
27149995011,4cyclictest0-21swapper/111:26:091
2714999498,5cyclictest40250irq/92-i91507:30:181
2714999495,5cyclictest40250irq/92-i91507:26:001
2714999493,9cyclictest9832-21/usr/sbin/munin12:20:331
2714999493,8cyclictest2695-21snmpd12:40:261
2714999492,10cyclictest31237-21/usr/sbin/munin10:25:121
2714999491,5cyclictest2695-21snmpd11:51:381
27149994912,6cyclictest17724-21seq11:15:111
27149994912,5cyclictest3286-21runrttasks09:39:401
27149994912,3cyclictest0-21swapper/110:39:551
27149994912,3cyclictest0-21swapper/110:11:571
27149994910,6cyclictest14874-21seq12:30:401
27149994910,5cyclictest40250irq/92-i91508:55:141
2714999484,8cyclictest12303-21iostat_ios12:25:191
2714999482,15cyclictest11171-21df08:05:131
2714999482,14cyclictest2225-21dbus-daemon12:49:361
2714999481,6cyclictest2695-21snmpd10:20:491
27149994813,4cyclictest0-21swapper/111:00:251
2714999481,15cyclictest21731-21iostat_ios12:50:191
27149994810,7cyclictest2225-21dbus-daemon09:30:041
27149994810,4cyclictest0-21swapper/107:48:441
27149994810,4cyclictest0-21swapper/107:44:011
2714999474,8cyclictest29292-21diskstats11:45:141
2714999472,7cyclictest6421-21/usr/sbin/munin10:45:321
2714999472,4cyclictest0-21swapper/107:54:271
2714999464,7cyclictest31887-21diskstats09:00:151
27149994612,4cyclictest0-21swapper/110:55:051
315912441,4sleep031635-21aten_r4power_en09:00:110
124912400,4sleep00-21swapper/012:25:230
27147993711,13cyclictest32280-21idleruntime07:35:180
2714799369,14cyclictest16467-21sort11:10:220
2714799358,12cyclictest5512-21mailstats10:40:260
2714799342,20cyclictest22316-21perl10:00:170
2714799338,13cyclictest19865-21ls11:20:130
2714799335,25cyclictest3-21ksoftirqd/008:45:160
27147993221,6cyclictest3100-21tune2fs10:35:160
2714799322,13cyclictest5333-21df07:50:110
27147993212,7cyclictest3000-21cron07:45:000
2714799321,15cyclictest13970-21cut12:30:160
256782321,9sleep00-21swapper/008:44:020
214442320,5sleep0111rcuc/012:50:140
2714799313,13cyclictest32117-21awk11:50:300
27147993124,4cyclictest7622-21missed_timers07:55:220
2714799312,16cyclictest22298-21ntp_states11:25:240
2714799312,15cyclictest0-21swapper/008:57:010
27147993115,13cyclictest3-21ksoftirqd/011:42:560
2714799311,4cyclictest81rcu_preempt09:44:370
2714799311,4cyclictest81rcu_preempt09:23:030
27147993112,6cyclictest28545-21/usr/sbin/munin07:25:280
27147993111,7cyclictest0-21swapper/011:15:110
2714799311,14cyclictest10554-21cut09:30:110
2714799305,13cyclictest845-21tr10:30:130
2714799301,4cyclictest81rcu_preempt12:41:490
2714799301,4cyclictest81rcu_preempt09:18:420
27147993011,6cyclictest17551-21mailstats08:20:280
2714799301,16cyclictest111-21usb-storage10:20:000
27147993010,6cyclictest8623-21memory12:15:250
2714799294,17cyclictest0-21swapper/012:11:170
2714799293,13cyclictest11720-21ntp_states08:05:250
2714799292,15cyclictest6904-21perl10:45:160
27147992921,5cyclictest3-21ksoftirqd/010:05:210
27147992921,5cyclictest3-21ksoftirqd/010:05:200
2714799292,14cyclictest3780-21irqstats07:45:220
2714799292,13cyclictest9112-21df_inode08:00:130
27147992920,5cyclictest3380-21fschecks_count09:10:160
2714799291,14cyclictest22839-21latency08:35:210
2714799291,14cyclictest22839-21latency08:35:210
159682291,5sleep00-21swapper/008:16:010
155612291,5sleep00-21swapper/011:09:040
41732281,5sleep00-21swapper/012:05:050
325822281,5sleep00-21swapper/010:26:130
307372281,5sleep00-21swapper/010:21:320
302792281,5sleep00-21swapper/011:45:320
2714799281,19cyclictest0-21swapper/009:55:060
27147992811,5cyclictest0-21swapper/010:55:180
2714799281,14cyclictest28102-21df08:50:140
27147992810,6cyclictest19622-21unixbench_multi08:25:300
27147992810,5cyclictest13244-21fschecks_time08:10:160
216102281,5sleep00-21swapper/008:30:570
175882281,5sleep00-21swapper/009:46:500
137592281,5sleep00-21swapper/009:36:120
112182281,5sleep00-21swapper/012:21:410
2714799279,6cyclictest26304-21ls11:35:260
2714799279,5cyclictest18933-21proc_pri09:50:260
2714799271,7cyclictest19857-21/usr/sbin/munin12:45:200
27147992710,6cyclictest4112-21sed12:05:010
27147992710,5cyclictest26700-21timerandwakeup10:10:310
23712271,5sleep00-21swapper/009:06:080
120682271,5sleep00-21swapper/011:00:100
2714799261,15cyclictest0-21swapper/011:59:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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