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2025-11-08 - 10:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #5

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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  Eltec
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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack3slot5s.osadl.org (updated Sat Nov 08, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211200ksoftirqd/1121650irq/30-eth0_g0_20:59:551
1211140ksoftirqd/1121650irq/30-eth0_g0_19:51:331
1211080ksoftirqd/1121650irq/30-eth0_g0_22:55:331
121940ksoftirqd/1121650irq/30-eth0_g0_21:18:410
121930ksoftirqd/1121650irq/30-eth0_g0_21:10:161
121850ksoftirqd/1121650irq/30-eth0_g0_23:22:211
94892820sleep1121650irq/30-eth0_g0_22:39:371
230432680sleep0121550irq/29-eth0_g0_23:34:410
193382610sleep1121650irq/30-eth0_g0_21:04:561
293032530chrt121650irq/30-eth0_g0_19:34:491
121530ksoftirqd/1121650irq/30-eth0_g0_22:13:551
121530ksoftirqd/1121650irq/30-eth0_g0_21:24:481
121500ksoftirqd/1121650irq/30-eth0_g0_22:00:121
121490ksoftirqd/1121650irq/30-eth0_g0_23:36:241
121490ksoftirqd/1121650irq/30-eth0_g0_21:43:031
121490ksoftirqd/1121650irq/30-eth0_g0_00:16:071
121490ksoftirqd/1121550irq/29-eth0_g0_22:48:011
121490ksoftirqd/1121550irq/29-eth0_g0_00:22:420
121480ksoftirqd/1121650irq/30-eth0_g0_23:09:101
121480ksoftirqd/1121650irq/30-eth0_g0_22:32:081
121470ksoftirqd/1121650irq/30-eth0_g0_00:24:520
121460ksoftirqd/1121650irq/30-eth0_g0_22:15:491
121450ksoftirqd/1121650irq/30-eth0_g0_23:20:000
121450ksoftirqd/1121650irq/30-eth0_g0_00:12:191
121450ksoftirqd/1121550irq/29-eth0_g0_20:16:391
121440ksoftirqd/1121650irq/30-eth0_g0_00:14:530
121440ksoftirqd/1121550irq/29-eth0_g0_21:50:351
121440ksoftirqd/1121550irq/29-eth0_g0_21:20:001
121650430irq/30-eth0_g0_470-21kworker/1:100:02:481
121650430irq/30-eth0_g0_1254-21latency22:04:521
121550430irq/29-eth0_g0_1955-21runrttasks19:06:260
121550430irq/29-eth0_g0_121ksoftirqd/122:55:260
121430ksoftirqd/1121650irq/30-eth0_g0_23:47:501
121430ksoftirqd/1121550irq/29-eth0_g0_23:00:591
121430ksoftirqd/1121550irq/29-eth0_g0_22:03:490
121650420irq/30-eth0_g0_470-21kworker/1:122:42:301
121650420irq/30-eth0_g0_470-21kworker/1:122:42:301
121650420irq/30-eth0_g0_22404-21grep19:04:571
121550420irq/29-eth0_g0_30363-21unixbench_multi21:49:580
121550420irq/29-eth0_g0_31ksoftirqd/023:52:530
121550420irq/29-eth0_g0_31ksoftirqd/023:49:020
121550420irq/29-eth0_g0_18629-21latency_hist21:04:360
121550420irq/29-eth0_g0_121ksoftirqd/122:18:420
121550420irq/29-eth0_g0_0-21swapper/022:41:020
121550420irq/29-eth0_g0_0-21swapper/022:41:020
121550410irq/29-eth0_g0_26075-21/usr/sbin/munin21:34:571
121550410irq/29-eth0_g0_26075-21/usr/sbin/munin21:34:571
121550410irq/29-eth0_g0_1955-21runrttasks20:40:000
121550410irq/29-eth0_g0_1955-21runrttasks20:01:110
121550410irq/29-eth0_g0_1955-21runrttasks00:04:500
121550410irq/29-eth0_g0_13-21kworker/0:123:19:000
121550410irq/29-eth0_g0_13-21kworker/0:122:47:100
121550410irq/29-eth0_g0_121ksoftirqd/100:10:220
121410ksoftirqd/1121650irq/30-eth0_g0_23:57:130
121410ksoftirqd/1121550irq/29-eth0_g0_22:21:491
121650400irq/30-eth0_g0_470-21kworker/1:123:27:571
121650400irq/30-eth0_g0_0-21swapper/123:12:121
121550400irq/29-eth0_g0_31828-21missed_timers19:44:511
121550400irq/29-eth0_g0_26541-21latency_hist19:24:370
121550400irq/29-eth0_g0_1955-21runrttasks23:33:100
121550400irq/29-eth0_g0_1955-21runrttasks22:39:030
121550400irq/29-eth0_g0_1955-21runrttasks20:05:190
121550400irq/29-eth0_g0_1955-21runrttasks19:45:180
121550400irq/29-eth0_g0_13-21kworker/0:122:19:590
121550400irq/29-eth0_g0_13-21kworker/0:121:12:410
121550400irq/29-eth0_g0_121ksoftirqd/121:27:560
121400ksoftirqd/1121650irq/30-eth0_g0_23:28:250
121400ksoftirqd/1121650irq/30-eth0_g0_22:49:360
121400ksoftirqd/1121650irq/30-eth0_g0_22:29:070
121400ksoftirqd/1121650irq/30-eth0_g0_21:30:330
121400ksoftirqd/1121650irq/30-eth0_g0_20:53:250
121400ksoftirqd/1121650irq/30-eth0_g0_20:26:490
121400ksoftirqd/1121650irq/30-eth0_g0_00:35:390
121400ksoftirqd/1121650irq/30-eth0_g0_00:29:490
121400ksoftirqd/1121550irq/29-eth0_g0_22:24:581
121400ksoftirqd/1121550irq/29-eth0_g0_21:14:501
253432390sleep1121650irq/30-eth0_g0_23:43:511
253432390sleep1121650irq/30-eth0_g0_23:43:511
22855993933cyclictest1547-21/usr/sbin/munin19:54:501
121650390irq/30-eth0_g0_4702kworker/1:100:30:501
121650390irq/30-eth0_g0_19270-21taskset23:19:311
121550390irq/29-eth0_g0_31ksoftirqd/019:40:130
121550390irq/29-eth0_g0_13-21kworker/0:123:42:380
121550390irq/29-eth0_g0_13-21kworker/0:123:42:380
121550390irq/29-eth0_g0_13-21kworker/0:121:24:060
121550390irq/29-eth0_g0_0-21swapper/019:49:530
121390ksoftirqd/1121650irq/30-eth0_g0_23:05:140
121390ksoftirqd/1121650irq/30-eth0_g0_23:01:400
121390ksoftirqd/1121650irq/30-eth0_g0_22:33:120
121390ksoftirqd/1121650irq/30-eth0_g0_22:04:440
121390ksoftirqd/1121650irq/30-eth0_g0_21:48:200
121390ksoftirqd/1121650irq/30-eth0_g0_21:40:340
121390ksoftirqd/1121650irq/30-eth0_g0_21:35:570
121390ksoftirqd/1121650irq/30-eth0_g0_21:35:570
121390ksoftirqd/1121650irq/30-eth0_g0_00:00:250
121390ksoftirqd/1121550irq/29-eth0_g0_23:34:241
121390ksoftirqd/1121550irq/29-eth0_g0_20:23:111
22855993833cyclictest12075-21unixbench_singl20:35:011
2285599381cyclictest310352sleep121:54:501
2285599381cyclictest15722-21grep20:49:571
121650380irq/30-eth0_g0_470-21kworker/1:121:44:451
121650380irq/30-eth0_g0_3284-21ntp_offset00:24:561
121650380irq/30-eth0_g0_121ksoftirqd/100:21:361
121550380irq/29-eth0_g0_19267-21mailstats21:04:550
121550380irq/29-eth0_g0_17619-21unixbench_singl23:10:010
121550380irq/29-eth0_g0_13-21kworker/0:121:57:470
121380ksoftirqd/1121650irq/30-eth0_g0_22:10:240
121380ksoftirqd/1121550irq/29-eth0_g0_19:29:561
121380ksoftirqd/1121550irq/29-eth0_g0_19:25:581
2285599371cyclictest19850-21diskmemload22:49:511
2285599371cyclictest16394-21sed20:54:471
121650370irq/30-eth0_g0_470-21kworker/1:121:29:591
121650370irq/30-eth0_g0_121ksoftirqd/100:06:391
121650370irq/30-eth0_g0_0-21swapper/123:58:401
121550370irq/29-eth0_g0_27304-21unixbench_singl19:24:570
121550370irq/29-eth0_g0_16816-21taskset20:54:550
121550370irq/29-eth0_g0_0-21swapper/020:37:550
22855993622cyclictest26563-21latency_hist19:24:371
2285599362cyclictest9516-21wc20:24:571
2285599362cyclictest24866-21unixbench_singl19:14:591
2285599361cyclictest4320-21chrt20:04:531
2285599361cyclictest3481-21grep19:59:591
2285599361cyclictest30977-21unixbench_singl19:40:001
2285599361cyclictest27286-21awk23:49:581
121650360irq/30-eth0_g0_1955-21runrttasks20:45:420
121550360irq/29-eth0_g0_2285499cyclictest19:29:560
121550360irq/29-eth0_g0_1955-21runrttasks20:30:240
121550360irq/29-eth0_g0_0-21swapper/019:09:500
121360ksoftirqd/15447-21awk20:09:491
121360ksoftirqd/1121650irq/30-eth0_g0_20:10:240
2285599351cyclictest14186-21nfs_client20:44:521
2285599351cyclictest13284-21grep20:39:581
2285599351cyclictest10666-21rt-features20:29:571
121550350irq/29-eth0_g0_2266-21sed19:54:580
121550350irq/29-eth0_g0_1955-21runrttasks20:16:210
121350ksoftirqd/1121650irq/30-eth0_g0_19:19:050
2285599341cyclictest5442-21taskset00:34:461
121550340irq/29-eth0_g0_8224-21sendmail_mailqu20:19:560
121550330irq/29-eth0_g0_1955-21runrttasks19:35:180
2285599311cyclictest0-21swapper/119:10:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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