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2026-07-26 - 12:35

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 Jul 26, 2026 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1618921470sleep0121650irq/29-eth0_g0_22:00:100
503421350sleep1121650irq/29-eth0_g0_21:13:461
640921280chrt121650irq/29-eth0_g0_21:20:271
1000921270chrt121650irq/29-eth0_g0_21:34:340
121950ksoftirqd/1121750irq/30-eth0_g0_21:52:371
121770ksoftirqd/1121750irq/30-eth0_g0_00:27:441
121700ksoftirqd/154762chrt23:27:490
211862580sleep0121650irq/29-eth0_g0_22:21:160
70532550sleep0121650irq/29-eth0_g0_21:22:440
70532550sleep0121650irq/29-eth0_g0_21:22:440
121540ksoftirqd/1121750irq/30-eth0_g0_23:32:401
234442520sleep1121650irq/29-eth0_g0_22:29:021
121510ksoftirqd/1121750irq/30-eth0_g0_22:46:461
88522490sleep1121750irq/30-eth0_g0_21:30:221
121480ksoftirqd/1121750irq/30-eth0_g0_21:52:400
121650470irq/29-eth0_g0_15021-21proc_pri19:42:480
298452460sleep0121750irq/30-eth0_g0_22:57:130
298452460sleep0121750irq/30-eth0_g0_22:57:130
121460ksoftirqd/1121650irq/29-eth0_g0_22:11:051
121450ksoftirqd/1121650irq/29-eth0_g0_23:07:121
121450ksoftirqd/1121650irq/29-eth0_g0_20:09:111
187312440sleep0121750irq/30-eth0_g0_22:11:130
172992440sleep0121650irq/29-eth0_g0_22:03:500
121750440irq/30-eth0_g0_121ksoftirqd/122:16:111
121650440irq/29-eth0_g0_1964-21runrttasks19:04:150
121440ksoftirqd/1121750irq/30-eth0_g0_21:47:301
121440ksoftirqd/1121750irq/30-eth0_g0_20:52:450
121650430irq/29-eth0_g0_31ksoftirqd/023:43:160
121650430irq/29-eth0_g0_31ksoftirqd/022:32:450
121650430irq/29-eth0_g0_31ksoftirqd/022:32:450
121650430irq/29-eth0_g0_31ksoftirqd/021:20:240
121430ksoftirqd/15341-21grep19:02:471
121430ksoftirqd/1121650irq/29-eth0_g0_23:58:581
121750420irq/30-eth0_g0_1219-21kworker/1:222:35:511
121750420irq/30-eth0_g0_1219-21kworker/1:222:35:511
121750420irq/30-eth0_g0_121ksoftirqd/121:03:501
121750420irq/30-eth0_g0_10084-21chrt21:35:271
121650420irq/29-eth0_g0_121ksoftirqd/100:01:410
121420ksoftirqd/1121650irq/29-eth0_g0_22:17:341
121420ksoftirqd/1121650irq/29-eth0_g0_21:46:001
588899418cyclictest23211-21df20:17:401
588899418cyclictest23211-21df20:17:401
588899411cyclictest25612-21awk22:37:481
121650410irq/29-eth0_g0_8894-21proc_pri19:17:460
121650410irq/29-eth0_g0_8894-21proc_pri19:17:460
121650410irq/29-eth0_g0_8269-21netstat21:27:450
121650410irq/29-eth0_g0_7867-21grep19:12:490
121650410irq/29-eth0_g0_7867-21grep19:12:490
121650410irq/29-eth0_g0_31ksoftirqd/023:41:300
121650410irq/29-eth0_g0_28702-21unixbench_multi20:37:490
121650410irq/29-eth0_g0_1964-21runrttasks23:32:400
121650410irq/29-eth0_g0_1964-21runrttasks22:31:260
121650410irq/29-eth0_g0_13-21kworker/0:123:51:430
121650410irq/29-eth0_g0_13-21kworker/0:121:40:390
121650410irq/29-eth0_g0_121ksoftirqd/122:49:570
121650410irq/29-eth0_g0_1198-21/usr/sbin/munin23:12:440
121650410irq/29-eth0_g0_0-21swapper/000:27:510
121410ksoftirqd/1121750irq/30-eth0_g0_22:57:231
121410ksoftirqd/1121750irq/30-eth0_g0_22:57:231
588899401cyclictest32380-21awk20:52:511
588899401cyclictest21915-21/usr/sbin/munin20:12:391
588899401cyclictest21915-21/usr/sbin/munin20:12:391
175342401sleep117552-21ntp_offset00:17:451
121750400irq/30-eth0_g0_1219-21kworker/1:223:41:241
121750400irq/30-eth0_g0_1219-21kworker/1:221:37:461
121650400irq/29-eth0_g0_23810-21taskset20:17:500
121650400irq/29-eth0_g0_23810-21taskset20:17:500
121650400irq/29-eth0_g0_1964-21runrttasks20:03:150
121650400irq/29-eth0_g0_13-21kworker/0:123:52:300
121650400irq/29-eth0_g0_13-21kworker/0:123:22:290
121650400irq/29-eth0_g0_13-21kworker/0:123:22:290
121650400irq/29-eth0_g0_13-21kworker/0:121:12:190
121650400irq/29-eth0_g0_13-21kworker/0:100:21:390
121650400irq/29-eth0_g0_13-21kworker/0:100:07:500
121650400irq/29-eth0_g0_13-21kworker/0:100:07:500
121400ksoftirqd/1121750irq/30-eth0_g0_23:12:141
121400ksoftirqd/1121750irq/30-eth0_g0_23:04:500
121400ksoftirqd/1121750irq/30-eth0_g0_19:29:350
121400ksoftirqd/1121650irq/29-eth0_g0_23:22:271
121400ksoftirqd/1121650irq/29-eth0_g0_20:49:441
121400ksoftirqd/1121650irq/29-eth0_g0_00:04:571
588899392cyclictest14055-21unixbench_singl19:38:031
588899391cyclictest12484-21awk19:32:441
121750390irq/30-eth0_g0_15789-21fgrep21:57:481
121750390irq/30-eth0_g0_1219-21kworker/1:200:08:331
121750390irq/30-eth0_g0_1219-21kworker/1:200:08:331
121750390irq/30-eth0_g0_121ksoftirqd/123:26:121
121750390irq/30-eth0_g0_121ksoftirqd/123:26:121
121750390irq/30-eth0_g0_121ksoftirqd/119:22:481
121750390irq/30-eth0_g0_121ksoftirqd/100:17:241
121650390irq/29-eth0_g0_31ksoftirqd/000:02:490
121650390irq/29-eth0_g0_25064-21unixbench_singl20:22:500
121650390irq/29-eth0_g0_13-21kworker/0:121:13:160
121650390irq/29-eth0_g0_121ksoftirqd/123:13:391
121650390irq/29-eth0_g0_1029-21zcat20:57:480
121390ksoftirqd/17751-21sshd21:26:521
121390ksoftirqd/17751-21sshd21:26:521
121390ksoftirqd/1121750irq/30-eth0_g0_23:17:540
121390ksoftirqd/1121750irq/30-eth0_g0_22:37:560
121390ksoftirqd/1121750irq/30-eth0_g0_22:17:040
121390ksoftirqd/1121750irq/30-eth0_g0_21:43:230
121390ksoftirqd/1121750irq/30-eth0_g0_20:36:510
121390ksoftirqd/1121750irq/30-eth0_g0_19:50:530
121390ksoftirqd/1121750irq/30-eth0_g0_00:15:530
121390ksoftirqd/1121650irq/29-eth0_g0_20:28:001
121390ksoftirqd/1121650irq/29-eth0_g0_20:02:041
588899382cyclictest8838-21ls23:42:421
121750380irq/30-eth0_g0_121ksoftirqd/122:49:151
121750380irq/30-eth0_g0_0-21swapper/123:27:431
121650380irq/29-eth0_g0_1964-21runrttasks22:26:230
121650380irq/29-eth0_g0_121ksoftirqd/121:09:021
121380ksoftirqd/1121750irq/30-eth0_g0_22:47:070
121380ksoftirqd/1121650irq/29-eth0_g0_19:16:161
121380ksoftirqd/1121650irq/29-eth0_g0_19:16:161
10712380sleep0121650irq/29-eth0_g0_23:12:140
588899372cyclictest17653-21grep19:52:501
588899371cyclictest8560-21df_abs19:17:401
588899371cyclictest8560-21df_abs19:17:401
121750370irq/30-eth0_g0_18787-21ntp_states00:22:461
121750370irq/30-eth0_g0_16853-21awk22:02:451
121650370irq/29-eth0_g0_30062-21df_abs22:57:380
121650370irq/29-eth0_g0_13-21kworker/0:100:36:390
121650370irq/29-eth0_g0_13-21kworker/0:100:22:300
121650370irq/29-eth0_g0_12431-21ls19:32:430
121650370irq/29-eth0_g0_121ksoftirqd/123:54:341
121650370irq/29-eth0_g0_0-21swapper/021:47:500
588899361cyclictest21921-21sendmail_mailqu22:22:491
588899361cyclictest15107-21awk19:42:501
588899361cyclictest0-21swapper/120:59:401
121750360irq/30-eth0_g0_121ksoftirqd/123:51:491
121750360irq/30-eth0_g0_121ksoftirqd/100:37:181
121650360irq/29-eth0_g0_29854-21timerandwakeup20:42:490
121650360irq/29-eth0_g0_21308-21unixbench_multi20:07:510
121650360irq/29-eth0_g0_1964-21runrttasks20:30:060
121650360irq/29-eth0_g0_18607-21netstat19:57:450
121650360irq/29-eth0_g0_0-21swapper/122:58:441
121360ksoftirqd/1121650irq/29-eth0_g0_20:05:591
588899351cyclictest6680-21unixbench_singl19:07:501
588899351cyclictest28574-21taskset20:37:471
588899351cyclictest24902-21fgrep20:22:481
588899351cyclictest15913-21sed19:47:391
588899351cyclictest0-21swapper/119:27:361
121650350irq/29-eth0_g0_13413-21/usr/sbin/munin19:37:530
121650350irq/29-eth0_g0_0-21swapper/019:22:500
121650340irq/29-eth0_g0_22594-21grep20:12:500
121650340irq/29-eth0_g0_22594-21grep20:12:500
121650340irq/29-eth0_g0_1964-21runrttasks21:04:130
121340ksoftirqd/1121750irq/30-eth0_g0_19:09:350
121650330irq/29-eth0_g0_30965-21ps20:47:470
121650330irq/29-eth0_g0_30220-21runrttasks20:45:161
588899321cyclictest0-21swapper/120:34:421
121320ksoftirqd/1121750irq/30-eth0_g0_19:52:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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