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2026-09-06 - 17:53

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 Sep 06, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
112019911231089,13cyclictest0-21swapper/107:25:101
112019911081088,17cyclictest10417-21strings10:10:241
102262483406,61sleep00-21swapper/007:20:240
110842461417,29sleep10-21swapper/107:24:211
1120099261220,19cyclictest0-21swapper/007:25:100
1120099235224,8cyclictest0-21swapper/010:10:240
39182800,8sleep01120099cyclictest12:45:180
1800124311,28sleep018080-21fschecks_count07:40:160
159032430,4sleep1211ktimersoftd/107:35:111
28972410,8sleep00-21swapper/009:50:230
181012410,2sleep10-21swapper/111:55:311
11200993816,8cyclictest26072-21cron12:20:000
1120199376,12cyclictest1018-21proc_pri09:45:261
1120099363,17cyclictest12203-21diskstats08:50:140
11201993513,10cyclictest22-21ksoftirqd/110:40:051
11200993510,12cyclictest30515-21watchsnmpd08:11:000
257242342,28sleep125731-21df_inode08:00:141
1120099343,16cyclictest15614-21df_inode10:25:130
1120199333,11cyclictest10612-21sh08:45:191
11201993316,4cyclictest22-21ksoftirqd/107:55:281
11201993312,17cyclictest11038-21snmpd11:54:471
1120199331,13cyclictest139332awk11:45:251
1120099332,16cyclictest17494-21diskstats10:30:140
11200993313,15cyclictest24372-21ntp_states07:55:230
11200993310,11cyclictest30198-21cron11:05:000
294362321,27sleep129440-21irqstats09:35:211
280252321,3sleep00-21swapper/010:57:070
216372323,26sleep021778-21unixbench_multi12:05:290
1120199321,5cyclictest81rcu_preempt08:16:571
1120199321,18cyclictest28043-21chrt10:57:171
1120199321,16cyclictest24934-21latency_hist09:25:001
11200993211,7cyclictest0-21swapper/008:18:420
1120099321,12cyclictest0-21swapper/011:16:140
313242311,26sleep131331-21iostat_ios09:40:191
1120199311,18cyclictest22782-21diskstats12:10:131
1120099318,11cyclictest11565-21gdbus09:18:430
11200993122,5cyclictest19939-21pluginstate10:35:260
11200993112,5cyclictest23317-21ntp_states12:10:240
11200993112,4cyclictest444-21diskstats09:45:160
11200993111,6cyclictest10844-21ntp_states08:45:240
300012301,5sleep10-21swapper/111:02:591
152742301,5sleep10-21swapper/108:57:451
1120199304,12cyclictest0-21swapper/109:18:441
11201993019,8cyclictest16110-21nfs4_client10:25:221
11201993016,8cyclictest374-21iostat_ios11:10:201
11201993016,11cyclictest22-21ksoftirqd/107:50:071
1120199301,5cyclictest0-21swapper/111:06:411
1120199301,4cyclictest81rcu_preempt10:39:071
1120199301,4cyclictest81rcu_preempt10:05:151
1120199301,4cyclictest81rcu_preempt10:05:151
1120199301,16cyclictest6849-21iostat_ios08:35:221
1120099308,6cyclictest11699-21hddtemp_smartct11:40:180
1120099305,13cyclictest31161-21timerwakeupswit12:30:280
1120099302,22cyclictest20455-21python09:10:300
1120099302,15cyclictest0-21swapper/009:42:340
11200993011,6cyclictest21951-21df07:50:120
11200993011,5cyclictest25369-21df09:25:110
1120099301,14cyclictest31053-21memory11:05:210
93802291,5sleep00-21swapper/010:08:500
93802291,5sleep00-21swapper/010:08:500
56562291,5sleep10-21swapper/109:59:181
40302291,5sleep10-21swapper/108:28:091
39302291,5sleep00-21swapper/008:27:080
327472291,4sleep1367-21find12:35:281
256752291,5sleep10-21swapper/112:15:571
214642291,5sleep00-21swapper/007:49:370
163742291,5sleep00-21swapper/011:51:580
137752291,5sleep00-21swapper/008:55:060
1120199294,9cyclictest11501-21diskstats11:40:161
1120199293,6cyclictest50342wc08:30:211
1120199293,13cyclictest0-21swapper/108:20:231
11201992919,7cyclictest2999-21seq11:15:281
11201992915,8cyclictest25016-21diskstats10:50:151
1120199291,4cyclictest81rcu_preempt12:04:341
1120199291,14cyclictest1920-21iostat12:40:201
11201992911,14cyclictest26462-21cpuspeed_turbos12:20:121
1120099299,16cyclictest6503-21mailstats11:25:260
1120099292,14cyclictest25737-21diskstats08:00:150
1120099292,14cyclictest16172-21hddtemp_smartct09:00:160
1120099292,14cyclictest0-21swapper/008:39:400
1120099292,13cyclictest29148-21python12:25:280
1120099291,4cyclictest81rcu_preempt08:06:370
11200992914,8cyclictest14492-21irqstats07:30:190
11200992912,6cyclictest11564-21packagekitd11:56:590
11200992911,5cyclictest5061-21memory08:30:210
11200992911,5cyclictest23812-21iostat_ios09:20:210
66182281,5sleep10-21swapper/112:51:501
1120199284,15cyclictest0-21swapper/109:30:121
1120199283,4cyclictest81rcu_preempt07:32:481
1120199282,4cyclictest29718-21idleruntime08:10:161
1120199281,6cyclictest3286-21runrttasks11:20:141
1120199281,4cyclictest81rcu_preempt09:26:391
1120199281,4cyclictest81rcu_preempt08:09:541
1120199281,4cyclictest81rcu_preempt07:45:541
1120099281,15cyclictest26659-21fschecks_time12:20:160
1120099281,14cyclictest32335-21aten_r4power_vo11:10:110
1120099281,14cyclictest24057-21/usr/sbin/munin10:45:290
11200992810,7cyclictest9631-21chrt08:42:430
11200992810,6cyclictest4490-21ntpdc11:20:250
11200992810,6cyclictest29662-21grep09:35:230
11200992810,5cyclictest9794-21hddtemp_smartct11:35:160
36402271,5sleep10-21swapper/109:52:501
294332271,5sleep10-21swapper/112:25:461
244012271,5sleep10-21swapper/110:48:261
220232271,5sleep10-21swapper/112:07:001
192642271,5sleep10-21swapper/107:41:141
135362271,5sleep10-21swapper/108:54:111
1120199278,5cyclictest5971-21fschecks_time11:25:141
1120199275,4cyclictest81rcu_preempt09:09:231
1120199274,14cyclictest0-21swapper/112:30:181
1120199273,4cyclictest81rcu_preempt10:30:591
1120099278,7cyclictest25309-21/usr/sbin/munin10:50:180
1120099271,24cyclictest111-21usb-storage10:20:200
11200992711,4cyclictest8437-21python11:30:270
11200992711,4cyclictest11565-21gdbus12:41:460
1120099271,13cyclictest21319-21fschecks_count10:40:160
1120099271,13cyclictest11600-21wget10:15:100
1120099271,12cyclictest7036-21timerwakeupswit10:00:290
11200992710,6cyclictest435-21/usr/sbin/munin12:35:300
11200992710,6cyclictest18577-21/usr/sbin/munin09:05:280
11200992710,5cyclictest28381-21cron09:32:000
11200992710,4cyclictest0-21swapper/012:50:120
11200992710,4cyclictest0-21swapper/012:00:110
106112271,5sleep10-21swapper/111:35:561
98002261,5sleep10-21swapper/108:44:301
1120199268,6cyclictest40250irq/92-i91510:15:111
1120199264,4cyclictest81rcu_preempt12:45:151
1120199262,10cyclictest16175-21hddtemp_smartct09:00:171
11201992613,10cyclictest22-21ksoftirqd/109:10:311
1120099263,12cyclictest0-21swapper/009:55:170
1120099261,17cyclictest0-21swapper/011:49:370
1120099261,12cyclictest2033-21cron08:23:000
11200992610,5cyclictest17136-21taskset07:36:030
1120199251,7cyclictest0-21swapper/110:21:161
1120199251,10cyclictest6447-21ls10:00:181
1120199242,9cyclictest8435-21sensors_temp11:30:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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