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2026-08-19 - 04:27

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 all highest latencies:
System rack9slot4s (updated Wed Aug 19, 2026 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
42969912161174,38cyclictest6188-21munin-node19:30:001
39992771725,31sleep00-21swapper/019:22:260
41872576531,30sleep10-21swapper/119:24:261
429599251208,36cyclictest6154-21munin-run19:30:000
218992780,3sleep041ktimersoftd/023:00:210
299382640,25sleep00-21swapper/021:55:240
220192590,3sleep041ktimersoftd/020:10:120
156012500,4sleep041ktimersoftd/019:50:300
45052420,7sleep1429699cyclictest20:49:301
4296993722,5cyclictest22-21ksoftirqd/100:49:221
429599369,14cyclictest30955-21iwlist00:50:220
429599366,14cyclictest32427-21seq22:01:230
429599361,12cyclictest21424-21fschecks_time00:25:170
318232361,6sleep10-21swapper/122:00:251
429599359,14cyclictest2225-21dbus-daemon19:55:130
429599354,5cyclictest81rcu_preempt21:45:260
4295993523,8cyclictest12035-21hddtemp_smartct00:00:180
429599351,21cyclictest15516-21seq00:10:140
214302351,4sleep121442-21smartctl00:25:191
120782350,8sleep0429599cyclictest22:35:130
4296993417,6cyclictest22-21ksoftirqd/100:51:321
429599348,13cyclictest1078-21iostat_ios22:05:200
429599341,20cyclictest6888-21diskstats20:55:160
429599341,14cyclictest0-21swapper/000:49:220
4296993317,6cyclictest22-21ksoftirqd/121:49:121
4296993316,6cyclictest22-21ksoftirqd/123:56:351
4296993316,6cyclictest22-21ksoftirqd/121:11:511
429599337,18cyclictest0-21swapper/023:48:010
4295993315,12cyclictest20240-21aten_r4power_vo20:05:170
4295993314,15cyclictest3-21ksoftirqd/000:19:320
181412330,3sleep1201rcuc/121:25:141
429699325,4cyclictest81rcu_preempt20:24:031
429699322,26cyclictest0-21swapper/119:50:181
4296993218,8cyclictest17465-21diskstats00:15:171
4296993217,5cyclictest22-21ksoftirqd/119:40:501
429599324,4cyclictest81rcu_preempt22:45:120
4295993213,6cyclictest10301-21diskstats22:30:150
263652321,5sleep10-21swapper/100:39:381
429699319,8cyclictest1010-21processes23:30:281
429699312,24cyclictest20673-21users22:55:301
4296993120,8cyclictest14910-21/usr/sbin/munin21:15:231
429699311,8cyclictest21824-21sort21:35:131
4296993114,6cyclictest22-21ksoftirqd/123:12:321
4296993114,6cyclictest22-21ksoftirqd/120:01:021
429599316,5cyclictest0-21swapper/020:29:060
4295993114,5cyclictest19978-21cpuspeed_turbos21:30:120
4295993113,5cyclictest9495-21munin-run23:55:000
4295993112,6cyclictest18049-21/usr/sbin/munin22:50:190
429599311,16cyclictest10544-21cron19:40:000
429599311,14cyclictest30173-21latency20:30:210
248982311,5sleep10-21swapper/121:41:171
142652311,5sleep10-21swapper/119:49:311
142182311,26sleep014252-21ntp_states00:05:290
429699302,14cyclictest0-21swapper/123:35:281
4296993015,6cyclictest22-21ksoftirqd/120:57:011
4296993015,6cyclictest22-21ksoftirqd/100:00:281
4296993015,5cyclictest22-21ksoftirqd/100:43:311
4296993014,6cyclictest22-21ksoftirqd/122:11:341
4296993013,6cyclictest22-21ksoftirqd/123:03:281
429599309,6cyclictest5012-21diskstats20:50:150
429599305,4cyclictest81rcu_preempt00:24:520
429599304,9cyclictest25288-21iostat_ios00:35:200
429599303,14cyclictest32014-21cut20:35:220
4295993023,4cyclictest18823-21kworker/0:321:21:060
429599301,15cyclictest2529-21/usr/sbin/munin23:35:170
429599301,14cyclictest28310-21cron00:45:000
283632301,5sleep10-21swapper/123:17:061
253162301,5sleep10-21swapper/120:17:071
99452291,5sleep10-21swapper/121:02:221
429699295,4cyclictest81rcu_preempt20:25:311
4296992914,5cyclictest22-21ksoftirqd/119:59:201
4296992913,6cyclictest22-21ksoftirqd/120:33:061
4296992913,6cyclictest22-21ksoftirqd/100:05:021
4296992913,5cyclictest22-21ksoftirqd/100:11:301
429599296,12cyclictest17926-21wget21:25:110
429599296,11cyclictest13424-21unixbench_multi21:10:300
429599295,12cyclictest3929-21runrttasks22:12:200
429599293,9cyclictest24014-21unixbench_multi00:30:290
429599293,4cyclictest81rcu_preempt21:50:380
429599292,13cyclictest5279-21users23:40:300
429599291,4cyclictest81rcu_preempt23:29:260
4295992911,6cyclictest4358-21/usr/sbin/munin22:15:120
4295992911,6cyclictest10330-21memory23:55:220
429599291,14cyclictest2225-21dbus-daemon19:43:460
429599291,13cyclictest3666-21ntp_states20:45:250
4295992910,14cyclictest155992chrt21:17:290
320132291,5sleep10-21swapper/123:25:521
206932291,5sleep10-21swapper/100:24:071
75912281,5sleep10-21swapper/122:21:081
54712281,5sleep10-21swapper/123:42:211
429699284,18cyclictest7551-21iostat_ios19:30:211
429699283,11cyclictest2225-21dbus-daemon00:30:391
429699281,23cyclictest13632-21sendmail22:40:011
4296992811,6cyclictest22-21ksoftirqd/121:55:051
429699281,15cyclictest13782-21/usr/sbin/munin22:40:161
4296992810,14cyclictest5510-21sshd20:50:241
429599289,6cyclictest9447-21/usr/sbin/munin21:00:280
429599283,17cyclictest0-21swapper/021:35:470
429599282,14cyclictest924-21/usr/sbin/munin20:40:130
429599282,14cyclictest24370-21hddtemp_smartct20:15:190
4295992818,6cyclictest30059-21unixbench_singl23:20:260
4295992815,11cyclictest0-21swapper/022:21:170
4295992811,5cyclictest8404-21runrttasks19:32:180
429599281,13cyclictest2695-21snmpd23:12:210
429599281,12cyclictest0-21swapper/022:25:130
4295992810,5cyclictest20007-21irqstats22:55:200
289642281,5sleep10-21swapper/121:54:361
233862281,5sleep10-21swapper/120:11:341
210752281,5sleep10-21swapper/121:30:431
189172281,5sleep10-21swapper/122:51:361
171912281,5sleep10-21swapper/122:48:101
142232281,5sleep00-21swapper/019:49:040
104872281,5sleep10-21swapper/119:39:281
94022271,5sleep10-21swapper/123:54:131
73922271,5sleep10-21swapper/123:47:501
429699271,8cyclictest32019-21kernelversion20:35:221
4296992712,5cyclictest22-21ksoftirqd/121:07:081
4296992711,6cyclictest22-21ksoftirqd/122:17:381
429699271,11cyclictest920-21wget20:40:131
429699271,11cyclictest20884-21grep20:05:271
4296992710,6cyclictest22-21ksoftirqd/122:27:001
429599279,6cyclictest1046-21/usr/sbin/munin23:30:270
429599271,13cyclictest23935-21cut23:05:220
4295992710,5cyclictest27042-21users20:20:300
283222271,5sleep00-21swapper/023:16:430
429699261,7cyclictest2215-21munin-run22:09:591
429599263,18cyclictest14468-21memory22:40:220
429599261,20cyclictest18548-21diskstats20:00:160
4295992610,5cyclictest11713-21taskset21:06:110
4295992610,4cyclictest0-21swapper/021:40:250
429699259,12cyclictest0-21swapper/123:20:251
246122251,4sleep10-21swapper/123:07:071
429699245,4cyclictest81rcu_preempt22:33:311
429699243,8cyclictest0-21swapper/121:20:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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