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2026-07-14 - 13:39

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 376 highest latencies:
System rack9slot4s (updated Tue Jul 14, 2026 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
109029911571109,32cyclictest12197-21timerwakeupswit19:25:491
109029911231100,19cyclictest29439-21ntp_states20:10:221
104322692646,31sleep00-21swapper/019:20:380
108142557513,30sleep10-21swapper/119:24:401
1231121190,5sleep0111rcuc/019:25:510
109019910091,6cyclictest0-21swapper/020:10:230
49412411,4sleep15003-21fschecks_count00:50:151
10901993918,7cyclictest3-21ksoftirqd/022:35:110
10902993823,11cyclictest19583-21missed_timers21:10:211
10901993822,7cyclictest27391-21latency_hist00:25:000
10901993822,6cyclictest18470-21fschecks_count00:00:170
10901993822,5cyclictest10832-21grep23:40:110
1090299377,13cyclictest40250irq/92-i91500:10:291
10901993724,9cyclictest0-21swapper/020:43:090
10901993722,5cyclictest2225-21dbus-daemon22:45:100
10901993714,8cyclictest3-21ksoftirqd/021:35:260
10901993710,8cyclictest2225-21dbus-daemon22:22:470
35492362,4sleep13586-21ntp_states00:45:261
128452361,31sleep111564-21packagekitd20:53:011
10902993624,9cyclictest20440-21grep19:45:311
10901993622,5cyclictest15838-21runrttasks23:52:230
1090199362,22cyclictest2695-21snmpd21:26:200
10901993621,6cyclictest11856-21idleruntime20:50:200
10901993621,5cyclictest9368-21latency23:35:220
10901993620,5cyclictest24347-21cpuspeed_turbos22:50:130
10901993618,15cyclictest0-21swapper/020:02:180
243542351,4sleep124372-21iostat_ios00:15:201
1090199357,18cyclictest0-21swapper/019:31:230
10901993521,5cyclictest14704-21runrttasks20:57:500
10901993520,5cyclictest30679-21/usr/sbin/munin23:05:270
10901993514,6cyclictest3-21ksoftirqd/019:55:290
10901993513,7cyclictest3-21ksoftirqd/022:03:430
10902993414,4cyclictest22-21ksoftirqd/123:54:001
1090199348,8cyclictest5563-21iostat23:25:200
10901993420,5cyclictest0-21swapper/023:49:310
10901993417,6cyclictest24372-21iostat_ios00:15:190
10901993416,7cyclictest17015-21aten_r4power_en21:05:110
10901993415,7cyclictest0-21swapper/021:11:170
10901993412,8cyclictest17631-21diskstats19:40:170
10901993412,6cyclictest3-21ksoftirqd/023:20:010
10901993412,5cyclictest0-21swapper/000:11:010
1090299331,28cyclictest2221-21cron00:44:591
10902993311,5cyclictest40250irq/92-i91523:31:361
1090199337,17cyclictest0-21swapper/019:35:570
10901993320,5cyclictest0-21swapper/022:10:250
10901993320,5cyclictest0-21swapper/021:50:200
10901993320,5cyclictest0-21swapper/021:31:220
10901993319,5cyclictest15246-21hddtemp_smartct22:25:180
10901993319,5cyclictest0-21swapper/022:08:270
10901993319,5cyclictest0-21swapper/000:35:130
10901993318,13cyclictest0-21swapper/000:52:240
10901993317,8cyclictest0-21swapper/000:05:170
10901993317,7cyclictest0-21swapper/020:05:200
10901993316,6cyclictest17084-21ntp_states23:55:250
10901993315,5cyclictest29584-21cpuspeed_turbos00:30:120
10901993310,6cyclictest3-21ksoftirqd/021:00:200
1090299329,5cyclictest40250irq/92-i91520:30:261
1090299327,6cyclictest31664-21/usr/sbin/munin23:10:161
10901993223,6cyclictest26181-21/usr/sbin/munin22:55:130
10901993222,8cyclictest0-21swapper/020:48:200
10901993222,7cyclictest0-21swapper/020:15:010
10901993219,5cyclictest0-21swapper/023:10:160
10901993219,5cyclictest0-21swapper/023:00:250
10901993219,5cyclictest0-21swapper/022:30:190
10901993219,5cyclictest0-21swapper/021:15:240
10901993219,5cyclictest0-21swapper/020:25:140
10901993219,5cyclictest0-21swapper/000:25:320
10901993219,4cyclictest0-21swapper/023:30:210
10901993219,4cyclictest0-21swapper/021:40:290
10901993217,6cyclictest0-21swapper/021:23:390
10901993215,6cyclictest32629-21iostat_ios21:45:210
10901993212,6cyclictest3-21ksoftirqd/023:20:050
10901993211,10cyclictest0-21swapper/020:32:120
1090299319,5cyclictest40250irq/92-i91523:25:191
1090299319,5cyclictest40250irq/92-i91521:25:161
1090299312,10cyclictest9916-21ntp_states22:10:251
10901993119,9cyclictest0-21swapper/000:40:030
10901993118,5cyclictest0-21swapper/022:15:160
10901993117,6cyclictest0-21swapper/021:55:220
10901993117,5cyclictest0-21swapper/000:45:260
10901993112,5cyclictest20138-21ps19:45:270
284572301,25sleep128507-21iostat23:00:191
239592301,5sleep10-21swapper/122:49:501
1090299309,5cyclictest40250irq/92-i91519:30:241
1090299309,5cyclictest40250irq/92-i91500:20:091
1090299304,7cyclictest2695-21snmpd23:16:431
10902993017,7cyclictest527-21iostat_ios20:20:211
10901993018,9cyclictest0-21swapper/022:43:240
10901993017,5cyclictest0-21swapper/020:35:160
10901993013,6cyclictest21489-21fschecks_time19:50:170
10901993011,10cyclictest0-21swapper/020:20:120
267422291,24sleep10-21swapper/120:05:141
170022291,5sleep10-21swapper/119:38:291
164162291,5sleep10-21swapper/121:00:591
10902992919,6cyclictest22474-21awk21:20:011
10902992915,8cyclictest3395-21diskstats23:20:151
1090299291,26cyclictest0-21swapper/120:38:091
91472281,5sleep10-21swapper/120:43:411
31132281,5sleep10-21swapper/121:53:271
262052281,5sleep10-21swapper/120:01:111
257152281,5sleep10-21swapper/122:53:331
241762281,5sleep10-21swapper/121:23:171
224192281,5sleep10-21swapper/119:51:061
166062281,5sleep10-21swapper/122:30:031
165502281,6sleep116666-21fschecks_time23:55:161
147352281,5sleep10-21swapper/120:58:101
138222281,5sleep10-21swapper/123:45:591
120562281,5sleep10-21swapper/123:42:061
1090299281,8cyclictest28901-21seq00:26:151
10902992813,11cyclictest18166-21ntp_states19:40:261
1090299281,13cyclictest29424-21/usr/sbin/munin00:30:231
9132271,5sleep10-21swapper/121:46:131
85592271,5sleep10-21swapper/122:06:141
3392271,5sleep10-21swapper/100:37:561
318982271,5sleep10-21swapper/120:16:541
312032271,5sleep10-21swapper/123:06:561
273862271,5sleep10-21swapper/122:56:281
218432271,4sleep10-21swapper/122:42:181
215972271,5sleep10-21swapper/100:08:361
201032271,5sleep10-21swapper/122:38:571
187872271,5sleep10-21swapper/100:00:231
162862271,5sleep10-21swapper/122:28:131
1090299273,17cyclictest16971-21/usr/sbin/munin21:05:321
1090299272,21cyclictest0-21swapper/119:55:251
316102261,4sleep10-21swapper/121:42:211
1090299269,13cyclictest26869-21fw_packets21:30:141
1090299262,10cyclictest0-21swapper/122:20:281
10902992617,6cyclictest22-21ksoftirqd/122:16:151
1090299261,4cyclictest81rcu_preempt21:35:261
10902992613,10cyclictest22-21ksoftirqd/120:25:281
103502261,4sleep10-21swapper/123:39:101
10902992515,6cyclictest6420-21cat22:00:301
10902992415,6cyclictest9451-21cut20:45:121
1090299238,11cyclictest5169-21latency_hist22:00:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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