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2026-09-10 - 02:23

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 Wed Sep 09, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
93909911521134,15cyclictest9555-21wget07:25:101
93899911121086,23cyclictest0-21swapper/007:25:110
93909910351015,16cyclictest30854-21sshd11:10:191
90102796751,29sleep00-21swapper/007:21:350
91112432338,30sleep10-21swapper/107:22:401
116092481,34sleep011659-21cut10:20:110
254522450,7sleep0938999cyclictest10:55:200
271752441,4sleep027283-21df09:35:130
9389994226,5cyclictest12865-21/usr/sbin/munin07:30:230
312112410,4sleep1211ktimersoftd/108:20:111
9389993925,5cyclictest22755-21wc10:50:000
9389993925,4cyclictest30144-21/usr/sbin/munin12:35:110
9389993923,5cyclictest32036-21/usr/sbin/munin09:45:290
9389993827,6cyclictest28011-21cron12:30:000
938999381,14cyclictest1974-21lldpad08:36:510
939099374,6cyclictest2654-21sshd09:00:201
78242371,31sleep17850-21aten_r4power_cu10:10:101
9389993625,6cyclictest17443-21munin-run09:10:000
9389993623,3cyclictest0-21swapper/008:20:010
9389993610,9cyclictest10643-21/usr/sbin/munin08:50:170
939099351,16cyclictest16490-21grep10:30:281
938999358,9cyclictest13408-21df_inode11:50:130
9389993520,6cyclictest25614-21/usr/sbin/munin09:30:160
938999351,5cyclictest28900-21fschecks_count11:05:140
9389993511,9cyclictest29109-21processes12:30:300
9389993511,7cyclictest6230-21df10:05:120
9389993511,15cyclictest0-21swapper/012:12:360
9389993510,6cyclictest30027-21ls09:40:290
9389993510,21cyclictest19214-21fschecks_time12:05:170
939099348,5cyclictest40250irq/92-i91510:55:221
9389993419,5cyclictest38762sleep008:31:080
9389993417,5cyclictest19766-21diskstats09:15:120
9389993413,6cyclictest3-21ksoftirqd/010:37:520
9389993413,6cyclictest3-21ksoftirqd/009:20:470
9389993411,14cyclictest0-21swapper/010:12:230
142132341,29sleep114275-21df07:35:131
9390993314,4cyclictest54262sleep108:35:281
9390993310,7cyclictest12585-21grep10:20:261
938999339,15cyclictest0-21swapper/012:51:300
938999338,8cyclictest829-21df_inode08:25:120
938999338,7cyclictest28612-21/usr/sbin/munin08:10:310
938999338,4cyclictest0-21swapper/007:35:230
9389993322,3cyclictest0-21swapper/012:15:280
9389993322,3cyclictest0-21swapper/010:00:000
9389993319,6cyclictest0-21swapper/007:57:470
9389993319,4cyclictest108202sleep011:42:200
54222331,5sleep05546-21latency_hist11:30:010
325482330,9sleep0938999cyclictest12:40:210
214642331,4sleep121479-21ntp_states12:10:231
939099327,14cyclictest40250irq/92-i91509:35:161
939099321,7cyclictest9708-21/usr/sbin/munin10:15:251
938999329,14cyclictest0-21swapper/011:00:570
938999328,7cyclictest15292-21diskstats11:55:140
938999328,15cyclictest0-21swapper/011:24:140
938999327,9cyclictest12543-21iostat_ios08:55:190
938999327,8cyclictest18195-21iostat09:10:220
9389993224,4cyclictest14500-21python10:25:270
9389993223,5cyclictest4781-21sed10:00:230
9389993223,5cyclictest4781-21sed10:00:220
9389993211,6cyclictest317812sleep011:11:310
938999321,13cyclictest2225-21dbus-daemon12:45:140
938999321,12cyclictest768-21grep11:15:270
938999321,12cyclictest20377-21unixbench_singl10:40:310
938999321,12cyclictest20377-21unixbench_singl10:40:300
938999321,12cyclictest18083-21fschecks_count07:45:150
219112321,4sleep122006-21hddtemp_smartct07:55:161
939099319,5cyclictest40250irq/92-i91508:15:211
939099312,8cyclictest18869-21users09:10:341
938999319,7cyclictest2225-21dbus-daemon12:03:170
938999316,4cyclictest16485-21timerwakeupswit10:30:280
938999312,20cyclictest0-21swapper/008:40:270
938999311,5cyclictest11432-21cpuspeed_turbos11:45:120
9389993111,6cyclictest0-21swapper/009:27:560
938999311,15cyclictest0-21swapper/008:45:170
938999311,13cyclictest785-21runrttasks09:50:200
938999311,12cyclictest25026-21/usr/sbin/munin12:20:200
938999311,12cyclictest19984-21fschecks_count07:50:160
938999311,12cyclictest19984-21fschecks_count07:50:160
135042311,5sleep10-21swapper/108:58:241
939099308,5cyclictest40250irq/92-i91512:40:131
939099308,5cyclictest40250irq/92-i91512:20:201
939099301,9cyclictest29321-21sed12:30:321
9390993010,5cyclictest40250irq/92-i91508:45:281
9390993010,4cyclictest40250irq/92-i91511:00:241
938999309,8cyclictest9387-21cyclictest10:18:250
9389993011,5cyclictest0-21swapper/010:52:530
9389993011,5cyclictest0-21swapper/009:02:070
9389993011,5cyclictest0-21swapper/008:06:340
938999301,10cyclictest0-21swapper/007:40:250
90492301,5sleep10-21swapper/111:38:441
128092301,5sleep10-21swapper/111:48:291
939099299,5cyclictest40250irq/92-i91511:15:171
939099297,6cyclictest40250irq/92-i91509:55:211
939099297,5cyclictest40250irq/92-i91512:53:391
939099297,5cyclictest40250irq/92-i91510:35:191
939099297,5cyclictest40250irq/92-i91509:25:251
939099297,5cyclictest40250irq/92-i91507:45:161
939099297,5cyclictest40250irq/92-i91507:30:231
939099296,5cyclictest40250irq/92-i91511:20:281
939099293,8cyclictest24865-21users08:00:291
939099292,8cyclictest2751-21diskstats08:30:141
939099291,8cyclictest3062-21taskset12:48:271
939099291,8cyclictest29401-21which09:40:181
939099291,8cyclictest28923-21tune2fs11:05:151
938999298,6cyclictest31365-21ls08:20:120
938999293,21cyclictest8062-21iostat_ios11:35:200
9389992911,5cyclictest0-21swapper/008:01:130
9389992910,6cyclictest0-21swapper/011:31:130
73172291,5sleep10-21swapper/110:06:261
276172291,5sleep10-21swapper/112:25:571
245242291,5sleep10-21swapper/110:54:151
210152291,5sleep10-21swapper/107:51:311
210152291,5sleep10-21swapper/107:51:301
204132291,5sleep10-21swapper/112:09:161
114092291,5sleep10-21swapper/108:51:101
939099288,5cyclictest40250irq/92-i91508:10:201
939099287,5cyclictest40250irq/92-i91510:00:231
939099287,5cyclictest40250irq/92-i91510:00:221
939099286,5cyclictest40250irq/92-i91509:20:241
939099283,18cyclictest14085-21iostat_ios10:25:211
9390992819,5cyclictest886-21fschecks_count08:25:141
939099281,8cyclictest31350-21interrupts09:45:191
939099281,8cyclictest16708-21ntp_offset07:40:241
939099281,7cyclictest26743-21users08:05:301
939099281,7cyclictest23112-21iostat12:15:181
939099281,7cyclictest20370-21grep10:40:301
939099281,7cyclictest20370-21grep10:40:301
9390992810,14cyclictest2225-21dbus-daemon09:15:141
17702281,5sleep10-21swapper/109:53:351
172942281,5sleep10-21swapper/109:08:371
166362281,5sleep10-21swapper/111:59:151
939099272,21cyclictest0-21swapper/111:50:181
939099271,8cyclictest22787-21sed10:50:001
72092271,5sleep10-21swapper/111:34:031
37142271,5sleep10-21swapper/111:25:111
316202271,5sleep10-21swapper/112:38:351
939099261,7cyclictest17290-21fschecks_time12:00:151
939099249,12cyclictest0-21swapper/111:40:171
9390992411,9cyclictest0-21swapper/109:30:181
79542241,5sleep10-21swapper/108:44:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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