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2026-06-03 - 04:30

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 Jun 03, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271799912601,3cyclictest0-21swapper/122:05:301
271799912191210,6cyclictest0-21swapper/119:25:131
271789911561146,7cyclictest0-21swapper/019:25:100
267962668621,32sleep00-21swapper/019:21:330
267042626580,30sleep10-21swapper/119:20:341
2717899207187,3cyclictest0-21swapper/022:05:290
2725921080,5sleep00-21swapper/020:55:110
34812920,2sleep03482-21sendmail_mailst19:50:260
19012830,4sleep0111rcuc/021:15:010
200392550,8sleep02717899cyclictest20:35:190
20102540,7sleep02717899cyclictest22:40:130
303162430,4sleep130314-21latency_hist19:35:001
27178994220,6cyclictest3-21ksoftirqd/023:42:400
27179993919,4cyclictest22-21ksoftirqd/121:50:301
27179993918,4cyclictest22-21ksoftirqd/122:21:081
27179993817,4cyclictest22-21ksoftirqd/100:05:151
134422381,32sleep013532-21/usr/sbin/munin00:35:230
47042361,30sleep04862-21fschecks_time19:55:160
27179993628,4cyclictest40250irq/92-i91523:10:141
131462361,4sleep013280-21/usr/sbin/munin23:10:130
2717999358,25cyclictest40250irq/92-i91500:10:161
2717899354,4cyclictest81rcu_preempt21:30:200
27178993513,7cyclictest10705-21python21:35:270
27178993512,6cyclictest23103-21irqstats23:35:200
2717999349,4cyclictest22-21ksoftirqd/120:43:291
27178993426,5cyclictest0-21swapper/023:53:040
2717899341,13cyclictest0-21swapper/023:25:260
102012341,28sleep010326-21df20:10:120
300692331,4sleep02225-21dbus-daemon22:28:180
2717999333,26cyclictest29372-21smartctl21:00:191
2717899335,5cyclictest81rcu_preempt21:52:000
2717899334,4cyclictest81rcu_preempt20:50:280
2717899331,19cyclictest27471-21ntp_states22:20:250
27178993311,11cyclictest3-21ksoftirqd/020:30:130
286312321,27sleep128651-21hddtemp_smartct23:50:181
27179993225,4cyclictest22-21ksoftirqd/122:00:251
2717899323,4cyclictest81rcu_preempt20:26:250
27572311,4sleep12996-21perl19:50:151
2717999317,4cyclictest40250irq/92-i91500:40:121
2717999316,5cyclictest81rcu_preempt23:17:361
2717899319,4cyclictest81rcu_preempt22:00:110
2717899318,4cyclictest81rcu_preempt23:50:010
2717899313,5cyclictest81rcu_preempt22:50:160
87722301,5sleep00-21swapper/022:55:570
67422301,5sleep00-21swapper/000:18:050
2717999308,4cyclictest40250irq/92-i91523:45:541
2717999305,4cyclictest22-21ksoftirqd/120:02:471
2717999303,6cyclictest145862cat21:45:281
27179993024,4cyclictest22-21ksoftirqd/122:55:151
27179993021,5cyclictest3984-21wc21:20:021
27179993018,7cyclictest4899-21ntp_states21:20:261
2717899305,4cyclictest2436-21sort21:15:170
2717899301,9cyclictest81rcu_preempt00:25:300
2717899301,8cyclictest0-21swapper/019:45:240
2717899301,4cyclictest81rcu_preempt21:09:460
2717899301,4cyclictest81rcu_preempt00:49:110
2717899301,4cyclictest81rcu_preempt00:49:110
2717899301,4cyclictest81rcu_preempt00:30:270
27178993011,6cyclictest32215-21df_inode00:00:130
2717899301,14cyclictest13654-21ls20:20:000
259452301,5sleep10-21swapper/123:43:191
248302301,5sleep10-21swapper/120:49:001
164552301,5sleep00-21swapper/023:17:320
147642301,5sleep00-21swapper/021:45:440
94702291,5sleep00-21swapper/020:05:440
76142291,24sleep17688-21if_eth000:20:211
3182291,5sleep00-21swapper/019:44:360
2717999297,4cyclictest40250irq/92-i91523:25:181
2717999292,8cyclictest81rcu_preempt23:23:511
2717999292,24cyclictest40250irq/92-i91520:15:201
27179992922,4cyclictest22-21ksoftirqd/122:50:241
27179992922,4cyclictest22-21ksoftirqd/120:31:001
27179992920,5cyclictest13333-21iostat00:35:191
27179992910,7cyclictest22-21ksoftirqd/122:10:121
2717899299,4cyclictest1030-21sed22:35:280
2717899292,23cyclictest11309-21wget23:05:130
2717899292,15cyclictest0-21swapper/021:20:340
27178992916,7cyclictest21639-21diskstats20:40:140
2717899291,3cyclictest81rcu_preempt21:25:260
27178992912,5cyclictest11565-21gdbus19:35:120
20502291,6sleep10-21swapper/119:47:511
186722291,5sleep00-21swapper/021:57:210
131902291,5sleep00-21swapper/021:43:530
131902291,5sleep00-21swapper/021:43:530
112522291,5sleep10-21swapper/121:38:271
107062291,5sleep00-21swapper/023:01:200
85912281,5sleep00-21swapper/000:22:370
53382281,5sleep10-21swapper/122:49:121
317812281,5sleep00-21swapper/022:31:360
2717999289,15cyclictest2225-21dbus-daemon20:05:171
2717999283,22cyclictest40250irq/92-i91523:55:131
2717999283,19cyclictest25693-21iostat_ios20:50:211
27179992822,4cyclictest22-21ksoftirqd/121:55:261
27179992822,4cyclictest22-21ksoftirqd/120:55:201
27179992822,4cyclictest22-21ksoftirqd/100:00:251
27179992822,3cyclictest211ktimersoftd/123:35:151
27179992821,5cyclictest22-21ksoftirqd/123:32:181
27179992821,4cyclictest22-21ksoftirqd/121:30:231
27179992821,4cyclictest22-21ksoftirqd/120:20:151
27179992821,4cyclictest22-21ksoftirqd/100:15:191
27179992819,5cyclictest25127-21fschecks_count22:15:151
27179992817,6cyclictest22-21ksoftirqd/122:35:001
27179992817,4cyclictest22-21ksoftirqd/121:08:301
2717899281,4cyclictest81rcu_preempt23:55:110
2717899281,15cyclictest21182-21/usr/sbin/munin23:30:180
2717899281,13cyclictest30104-21unixbench_singl21:00:300
2717899281,12cyclictest22865-21/usr/sbin/munin22:10:120
196942281,5sleep10-21swapper/100:50:301
17532281,5sleep10-21swapper/121:13:351
159532281,5sleep00-21swapper/000:40:560
14692281,5sleep10-21swapper/122:39:271
117262281,5sleep10-21swapper/120:14:401
59272271,5sleep10-21swapper/119:58:061
2717999272,12cyclictest0-21swapper/123:01:561
27179992720,4cyclictest22-21ksoftirqd/121:42:001
27179992720,4cyclictest22-21ksoftirqd/121:41:591
27179992720,4cyclictest22-21ksoftirqd/120:35:231
27179992720,4cyclictest22-21ksoftirqd/119:40:171
27179992714,7cyclictest2015-21diskstats22:40:141
27179992713,12cyclictest22-21ksoftirqd/123:05:131
2717899279,13cyclictest23516-21diskstats20:45:160
2717899278,5cyclictest3-21ksoftirqd/000:54:000
2717899271,4cyclictest81rcu_preempt20:04:460
27178992710,5cyclictest81rcu_preempt22:50:000
27179992619,4cyclictest22-21ksoftirqd/120:26:581
27179992617,6cyclictest22-21ksoftirqd/122:25:101
27179992617,6cyclictest22-21ksoftirqd/100:45:121
27179992617,6cyclictest22-21ksoftirqd/100:45:111
27179992615,8cyclictest22-21ksoftirqd/100:25:291
2717899269,5cyclictest25568-21ntp_states22:15:250
2717899261,12cyclictest81rcu_preempt20:25:010
124252261,5sleep10-21swapper/100:33:271
27179992517,5cyclictest22-21ksoftirqd/119:37:061
27179992513,8cyclictest7197-21unixbench_singl21:25:301
2717899251,4cyclictest81rcu_preempt19:30:130
2717899251,13cyclictest0-21swapper/000:06:520
2717899241,21cyclictest0-21swapper/023:23:400
2717899231,11cyclictest4265-21ps00:10:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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