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2026-07-14 - 19:31

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 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313579912561232,18cyclictest3495-21strings11:50:231
313569911671131,25cyclictest0-21swapper/007:26:490
310492675627,33sleep00-21swapper/007:22:210
309842500454,31sleep10-21swapper/107:21:411
3135799220212,5cyclictest0-21swapper/107:26:491
3135699174151,20cyclictest0-21swapper/011:50:230
72162920,8sleep13135799cyclictest12:00:231
320332770,8sleep03135699cyclictest10:15:170
3135799443,11cyclictest0-21swapper/108:11:411
3135799438,5cyclictest21348-21mailstats09:45:261
3135799428,6cyclictest4604-21mailstats07:35:291
3135799428,5cyclictest21094-21fschecks_count08:20:141
3135799416,4cyclictest18878-21aten_r4power_en08:15:121
3135799411,9cyclictest0-21swapper/110:50:181
3135799411,8cyclictest0-21swapper/111:31:271
3135799402,8cyclictest0-21swapper/109:18:491
3135799402,8cyclictest0-21swapper/108:34:171
3135799401,8cyclictest0-21swapper/112:10:311
3135799401,8cyclictest0-21swapper/110:25:291
3135799396,5cyclictest26762-21fschecks_time08:35:141
3135799392,8cyclictest0-21swapper/109:30:171
3135799391,8cyclictest0-21swapper/111:45:121
3135799391,8cyclictest0-21swapper/111:35:211
3135799391,8cyclictest0-21swapper/111:25:121
3135799391,8cyclictest0-21swapper/108:40:131
178142396,4sleep011565-21gdbus11:03:140
59002380,4sleep1201rcuc/107:40:161
3135799387,5cyclictest28729-21ntpq10:05:241
3135799387,5cyclictest2493-21smartctl08:55:281
3135799387,5cyclictest15919-21ntpq08:05:251
3135799387,5cyclictest14276-21runrttasks09:26:531
3135799386,5cyclictest23084-21ntpq09:50:231
3135799381,9cyclictest0-21swapper/111:05:281
3135799381,8cyclictest0-21swapper/112:34:241
3135799381,8cyclictest0-21swapper/108:50:181
3135799381,8cyclictest0-21swapper/108:28:291
31357993814,3cyclictest22-21ksoftirqd/112:42:001
31357993813,4cyclictest22-21ksoftirqd/111:11:331
31357993813,4cyclictest22-21ksoftirqd/109:55:591
31357993813,4cyclictest22-21ksoftirqd/109:07:331
3135799381,11cyclictest0-21swapper/108:45:311
82622371,32sleep011565-21gdbus10:36:540
3135799375,6cyclictest5799-21ntpq10:30:241
3135699379,13cyclictest20470-21grep09:45:090
31356993711,23cyclictest23912-21grep11:20:130
220692372,5sleep122180-21df11:15:121
3135799368,6cyclictest22-21ksoftirqd/110:46:001
3135799366,5cyclictest14860-21ntpq12:20:241
31357993613,4cyclictest22-21ksoftirqd/109:12:311
31357993613,3cyclictest22-21ksoftirqd/111:22:291
31357993613,3cyclictest22-21ksoftirqd/110:56:311
31357993612,3cyclictest22-21ksoftirqd/107:59:221
31357993611,6cyclictest22-21ksoftirqd/109:35:311
31357993610,6cyclictest22-21ksoftirqd/107:52:441
130462360,3chrt0-21swapper/009:25:140
3135799355,5cyclictest9212-21updatedb.mlocat07:49:251
3135799351,8cyclictest0-21swapper/110:16:311
31357993513,4cyclictest22-21ksoftirqd/110:21:551
31357993513,4cyclictest22-21ksoftirqd/110:21:541
31357993512,4cyclictest22-21ksoftirqd/112:06:571
31357993512,3cyclictest22-21ksoftirqd/112:18:511
31357993512,3cyclictest22-21ksoftirqd/111:42:281
31357993512,3cyclictest22-21ksoftirqd/110:00:071
31357993511,3cyclictest22-21ksoftirqd/108:00:311
3135699351,11cyclictest81rcu_preempt07:48:580
3135799348,5cyclictest2443-21ntp_states07:30:231
3135799346,6cyclictest22-21ksoftirqd/112:51:091
3135799346,5cyclictest30806-21smartctl10:10:271
3135799343,11cyclictest0-21swapper/110:36:511
3135799341,8cyclictest0-21swapper/109:00:231
31357993412,4cyclictest22-21ksoftirqd/112:49:211
31357993412,4cyclictest22-21ksoftirqd/109:22:011
31357993412,3cyclictest22-21ksoftirqd/111:57:501
31357993411,4cyclictest22-21ksoftirqd/110:43:421
31357993411,3cyclictest22-21ksoftirqd/109:41:031
3135699341,10cyclictest81rcu_preempt11:05:430
31357993312,3cyclictest22-21ksoftirqd/112:25:541
3135699336,4cyclictest81rcu_preempt12:30:260
3135699336,13cyclictest11565-21gdbus11:30:220
3135699331,20cyclictest6471-21plymouth07:40:260
3135699330,11cyclictest81rcu_preempt08:53:540
3135799326,5cyclictest19887-21cstates12:35:121
31357993211,4cyclictest22-21ksoftirqd/111:00:031
3135699324,4cyclictest81rcu_preempt08:40:010
3135699316,13cyclictest7505-21diskstats09:10:140
3135699316,12cyclictest2444-21taskset07:30:240
3135699315,4cyclictest81rcu_preempt10:50:300
3135699312,5cyclictest81rcu_preempt10:30:260
3135699311,4cyclictest81rcu_preempt11:27:460
3135699311,4cyclictest81rcu_preempt08:40:500
3135699311,4cyclictest81rcu_preempt08:31:270
3135699311,20cyclictest0-21swapper/008:01:360
3135699311,11cyclictest9792-21fschecks_count07:50:180
220802311,26sleep011565-21gdbus08:21:070
3135699309,17cyclictest2225-21dbus-daemon07:58:430
3135699301,4cyclictest81rcu_preempt12:35:220
3135699301,4cyclictest81rcu_preempt11:47:410
3135699301,4cyclictest81rcu_preempt10:06:560
3135699301,4cyclictest81rcu_preempt09:04:440
31356993012,4cyclictest0-21swapper/011:55:260
3135699301,15cyclictest11565-21gdbus11:42:430
31356993010,5cyclictest15753-21cron12:25:000
3135699300,4cyclictest81rcu_preempt10:44:010
3135699299,6cyclictest2225-21dbus-daemon10:59:210
3135699296,11cyclictest0-21swapper/009:00:010
3135699294,4cyclictest81rcu_preempt11:17:340
3135699292,3cyclictest81rcu_preempt10:29:340
3135699292,15cyclictest31265-21/usr/sbin/munin08:45:290
3135699292,13cyclictest6023-21memory09:05:220
3135699291,4cyclictest81rcu_preempt11:11:570
3135699291,4cyclictest81rcu_preempt09:42:020
3135699291,4cyclictest81rcu_preempt07:35:530
31356992911,6cyclictest11565-21gdbus10:20:170
31356992911,6cyclictest11565-21gdbus10:20:170
3135699291,16cyclictest0-21swapper/008:13:460
3135699291,14cyclictest26862-21/usr/sbin/munin10:00:240
31356992910,7cyclictest26332-21cat12:50:270
31356992910,6cyclictest20264-21cron08:16:590
3135699289,6cyclictest24829-21memory09:55:220
3135699286,6cyclictest11280-21python12:10:300
3135699283,4cyclictest81rcu_preempt12:07:030
3135699283,17cyclictest16108-21python08:05:270
3135699281,19cyclictest0-21swapper/009:50:430
3135699281,17cyclictest0-21swapper/009:39:580
3135699281,14cyclictest6868-21/usr/sbin/munin12:00:170
31356992810,5cyclictest23811-21cut12:45:150
163102281,5sleep00-21swapper/009:33:310
3135699279,5cyclictest22861-21ls08:25:140
3135699271,13cyclictest30706-21/usr/sbin/munin11:35:330
3135699271,13cyclictest30106-21fschecks_count10:10:150
3135699271,13cyclictest2695-21snmpd09:18:490
3135699271,13cyclictest11421-21ntpdc10:45:220
175702271,5sleep00-21swapper/012:29:250
136832271,5sleep00-21swapper/012:18:150
3135699261,13cyclictest11319-21tune2fs09:20:160
3135699261,12cyclictest23155-21runrttasks12:43:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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