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2025-11-16 - 22:00

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 Sun Nov 16, 2025 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1986321080sleep1121650irq/29-eth0_g0_09:34:251
209792970sleep1121650irq/29-eth0_g0_09:38:081
204542930sleep1121650irq/29-eth0_g0_11:49:211
121860ksoftirqd/1121650irq/29-eth0_g0_11:20:210
135852760chrt121750irq/30-eth0_g0_09:05:241
121740ksoftirqd/1121750irq/30-eth0_g0_12:00:261
188432620sleep0121750irq/30-eth0_g0_09:30:100
135082510sleep0121650irq/29-eth0_g0_09:05:230
121490ksoftirqd/1121750irq/30-eth0_g0_11:22:391
121490ksoftirqd/1121750irq/30-eth0_g0_11:11:461
127932480sleep1121750irq/30-eth0_g0_11:15:351
121650480irq/29-eth0_g0_121ksoftirqd/109:15:111
121480ksoftirqd/1121750irq/30-eth0_g0_08:15:111
221572470sleep1121650irq/29-eth0_g0_09:42:341
57052460sleep0121650irq/29-eth0_g0_10:48:290
57052460sleep0121650irq/29-eth0_g0_10:48:290
121650460irq/29-eth0_g0_16704-21unixbench_singl07:05:200
320552450sleep1121750irq/30-eth0_g0_08:10:121
121750450irq/30-eth0_g0_1219-21kworker/1:210:19:561
121450ksoftirqd/1121750irq/30-eth0_g0_11:57:551
121450ksoftirqd/1121750irq/30-eth0_g0_11:44:231
121750440irq/30-eth0_g0_1219-21kworker/1:211:34:141
121750430irq/30-eth0_g0_4149-21unixbench_multi10:40:491
121650430irq/29-eth0_g0_3716-21iostat10:40:140
121650430irq/29-eth0_g0_31ksoftirqd/009:20:350
121650430irq/29-eth0_g0_13-21kworker/0:112:20:210
121650430irq/29-eth0_g0_13-21kworker/0:111:10:180
121420ksoftirqd/1121650irq/29-eth0_g0_09:25:181
17177994136cyclictest29010-21seq10:10:191
17177994136cyclictest29010-21seq10:10:191
121750410irq/30-eth0_g0_1219-21kworker/1:211:39:091
121750410irq/30-eth0_g0_1219-21kworker/1:209:45:121
121650410irq/29-eth0_g0_13-21kworker/0:111:35:130
121650410irq/29-eth0_g0_13-21kworker/0:111:15:320
121650410irq/29-eth0_g0_13-21kworker/0:109:35:140
121650410irq/29-eth0_g0_121ksoftirqd/109:54:320
121650410irq/29-eth0_g0_0-21swapper/009:40:550
121410ksoftirqd/1121650irq/29-eth0_g0_09:50:211
1717799402cyclictest9360-21df_abs08:50:111
1717799402cyclictest12373-21unixbench_multi09:00:221
1717799401cyclictest1894-21runrttasks08:30:411
163742400sleep0121650irq/29-eth0_g0_09:18:060
121750400irq/30-eth0_g0_27684-21grep07:50:211
121750400irq/30-eth0_g0_17175-21cyclictest10:35:161
121650400irq/29-eth0_g0_25591-21sed09:55:220
121650400irq/29-eth0_g0_24339-21df_abs12:05:120
121650400irq/29-eth0_g0_1894-21runrttasks08:42:270
121650400irq/29-eth0_g0_1894-21runrttasks07:19:130
121650400irq/29-eth0_g0_13-21kworker/0:111:48:390
121650400irq/29-eth0_g0_13-21kworker/0:111:43:410
121650400irq/29-eth0_g0_13-21kworker/0:111:27:040
121650400irq/29-eth0_g0_13-21kworker/0:110:25:200
121650400irq/29-eth0_g0_13-21kworker/0:110:13:100
121650400irq/29-eth0_g0_13-21kworker/0:110:13:100
121400ksoftirqd/1121750irq/30-eth0_g0_07:33:320
121400ksoftirqd/1121650irq/29-eth0_g0_10:09:011
284642390sleep0121650irq/29-eth0_g0_10:09:490
1717799392cyclictest6586-21grep10:50:231
1717799391cyclictest14766-21wc09:10:221
121750390irq/30-eth0_g0_1219-21kworker/1:210:26:231
121750390irq/30-eth0_g0_1219-21kworker/1:210:20:161
121750390irq/30-eth0_g0_121ksoftirqd/111:08:571
121750390irq/30-eth0_g0_121ksoftirqd/111:00:151
121750390irq/30-eth0_g0_121ksoftirqd/110:01:431
121750390irq/30-eth0_g0_121ksoftirqd/109:23:251
121650390irq/29-eth0_g0_31ksoftirqd/008:20:170
121650390irq/29-eth0_g0_13-21kworker/0:111:09:530
121650390irq/29-eth0_g0_0-21swapper/010:00:180
121390ksoftirqd/1121750irq/30-eth0_g0_12:11:430
121390ksoftirqd/1121750irq/30-eth0_g0_12:04:190
121390ksoftirqd/1121750irq/30-eth0_g0_11:56:310
121390ksoftirqd/1121750irq/30-eth0_g0_11:50:050
121390ksoftirqd/1121750irq/30-eth0_g0_09:27:340
121390ksoftirqd/1121750irq/30-eth0_g0_08:46:010
121390ksoftirqd/1121750irq/30-eth0_g0_08:46:010
121390ksoftirqd/1121750irq/30-eth0_g0_08:15:290
121390ksoftirqd/1121750irq/30-eth0_g0_07:50:160
121390ksoftirqd/1121750irq/30-eth0_g0_07:49:200
1717799381cyclictest30593-21ethtool12:30:131
1717799381cyclictest26949-21chrt07:49:591
1717799381cyclictest22482sleep108:20:161
1717799381cyclictest11173-21grep08:55:211
1717799381cyclictest0-21swapper/110:34:381
1717799381cyclictest0-21swapper/107:39:231
121750380irq/30-eth0_g0_16355-21missed_timers07:05:141
121750380irq/30-eth0_g0_121ksoftirqd/111:50:101
121750380irq/30-eth0_g0_121ksoftirqd/110:58:411
121750380irq/30-eth0_g0_121ksoftirqd/110:46:031
121750380irq/30-eth0_g0_121ksoftirqd/110:46:031
121750380irq/30-eth0_g0_0-21swapper/112:11:221
121750380irq/30-eth0_g0_0-21swapper/111:26:591
121650380irq/29-eth0_g0_31ksoftirqd/012:15:410
121650380irq/29-eth0_g0_31ksoftirqd/010:30:120
121650380irq/29-eth0_g0_31ksoftirqd/010:16:160
121650380irq/29-eth0_g0_2637-21ntpdc10:35:160
121650380irq/29-eth0_g0_16292-21cat11:30:220
121650380irq/29-eth0_g0_13-21kworker/0:112:34:120
121650380irq/29-eth0_g0_13-21kworker/0:111:02:500
121650380irq/29-eth0_g0_13-21kworker/0:110:59:430
121650380irq/29-eth0_g0_13-21kworker/0:110:53:230
121650380irq/29-eth0_g0_13-21kworker/0:109:10:220
1717799372cyclictest28945-21unixbench_singl07:55:231
1717799372cyclictest28945-21unixbench_singl07:55:231
1717799371cyclictest35762sleep108:25:181
1717799371cyclictest31604-21/usr/sbin/munin12:35:131
1717799371cyclictest31604-21/usr/sbin/munin12:35:131
1717799371cyclictest17569-21cat07:10:141
1717799371cyclictest0-21swapper/108:09:051
121750370irq/30-eth0_g0_1219-21kworker/1:212:28:431
121750370irq/30-eth0_g0_1219-21kworker/1:212:20:361
121750370irq/30-eth0_g0_1219-21kworker/1:209:55:381
121750370irq/30-eth0_g0_121ksoftirqd/112:06:211
121650370irq/29-eth0_g0_5996-21awk08:35:160
121650370irq/29-eth0_g0_28470-21if_eth007:55:140
121650370irq/29-eth0_g0_28470-21if_eth007:55:140
121650370irq/29-eth0_g0_1894-21runrttasks08:01:590
121650370irq/29-eth0_g0_13-21kworker/0:112:36:570
121650370irq/29-eth0_g0_13-21kworker/0:112:36:570
121650370irq/29-eth0_g0_13-21kworker/0:112:26:040
121650370irq/29-eth0_g0_13-21kworker/0:109:46:360
121650370irq/29-eth0_g0_0-21swapper/010:22:080
1717799361cyclictest7282-21open_files08:40:301
1717799361cyclictest30217-21vmstat08:00:241
121750360irq/30-eth0_g0_0-21swapper/108:37:521
121650360irq/29-eth0_g0_20006-21memory07:20:150
121650360irq/29-eth0_g0_1894-21runrttasks07:13:290
1717799351cyclictest20990-21sshd07:25:111
1717799351cyclictest0-21swapper/107:20:141
1717799351cyclictest0-21swapper/107:16:201
121650350irq/29-eth0_g0_9826-21sendmail_mailqu08:50:190
121650350irq/29-eth0_g0_4700-21missed_timers08:30:160
121650350irq/29-eth0_g0_32564-21tail08:10:210
121650350irq/29-eth0_g0_31090-21taskset08:05:190
121650350irq/29-eth0_g0_1894-21runrttasks07:35:460
1717799341cyclictest25509-21sshd07:42:281
121750340irq/30-eth0_g0_8720-21unixbench_multi08:45:211
121750340irq/30-eth0_g0_8720-21unixbench_multi08:45:211
121750340irq/30-eth0_g0_1219-21kworker/1:212:17:591
121650340irq/29-eth0_g0_1894-21runrttasks07:40:060
121650340irq/29-eth0_g0_12026-21memory09:00:150
121650340irq/29-eth0_g0_10865-21netstat08:55:150
1717799331cyclictest22616-21ps07:30:201
121650330irq/29-eth0_g0_21186-21latency07:25:140
121650330irq/29-eth0_g0_0-21swapper/008:25:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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