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2026-03-10 - 01:58
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 100 highest latencies:
System rack4slot2.osadl.org (updated Tue Mar 10, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745011060,0irq/46-4a1000003825-1kworker/u3:219:04:120
25838210811,0sleep025861-21ntp_kernel_err21:37:420
326522978,0sleep032650-21meminfo20:22:410
7450960,0irq/46-4a1000004537-21cron20:36:540
7450960,0irq/46-4a10000024469-21timerwakeupswit23:07:530
7450960,0irq/46-4a10000014588-21runrttasks21:05:080
7450950,0irq/46-4a1000007243-21mailstats23:52:460
7450940,0irq/46-4a1000005743-21grep22:12:520
7450940,0irq/46-4a10000028488-21cron23:21:540
7450940,0irq/46-4a10000022693-21/usr/sbin/munin19:52:500
7450940,0irq/46-4a10000022400-21/usr/sbin/munin23:02:380
7450940,0irq/46-4a10000020305-21df_abs22:57:130
7450940,0irq/46-4a10000019745-21runrttasks21:20:190
7450930,0irq/46-4a1000009687-21cron22:26:530
7450930,0irq/46-4a1000003653-21/usr/sbin/munin23:42:400
7450930,0irq/46-4a10000028823-21ls23:22:080
7450930,0irq/46-4a10000023698-21expr19:57:090
7450930,0irq/46-4a10000023688-21df21:32:100
7450930,0irq/46-4a10000022072-21df_inode21:27:130
7450930,0irq/46-4a10000019120-21ps22:52:460
7450930,0irq/46-4a10000015790-21sendmail_mailqu00:17:450
7450930,0irq/46-4a10000013480-21df_abs00:12:140
7450920,0irq/46-4a1000008144-21/usr/sbin/munin19:12:390
7450920,0irq/46-4a1000005756-21wc19:06:570
7450920,0irq/46-4a10000032250-21df_abs23:32:100
7450920,0irq/46-4a10000030713-21tune2fs20:17:210
7450920,0irq/46-4a10000028816-21sshd21:47:100
7450920,0irq/46-4a10000027352-21runrttasks20:07:250
7450920,0irq/46-4a10000021443-1kworker/u3:200:35:430
7450920,0irq/46-4a1000001764-21idleruntime23:37:290
7450920,0irq/46-4a10000017537-21runrttasks00:22:480
7450920,0irq/46-4a10000017104-21fw_conntrack21:12:290
7450920,0irq/46-4a10000015643-21ntp_states21:07:450
7450920,0irq/46-4a10000013370-21egrep22:37:060
7450920,0irq/46-4a10000013263-21aten_r4power_en19:27:050
7450920,0irq/46-4a10000013178-21date00:11:570
7450920,0irq/46-4a10000011222-1kworker/u3:222:33:160
7450920,0irq/46-4a10000010743-21ls19:17:480
7450920,0irq/46-4a10000010659-21zcat00:02:460
78392910,0sleep06445-1kworker/u3:222:20:400
7450910,0irq/46-4a1000009699-21munin-run20:51:550
7450910,0irq/46-4a1000008143-21/usr/sbin/munin23:57:450
7450910,0irq/46-4a1000006522-21runrttasks20:42:080
7450910,0irq/46-4a10000031189-21sendmail_mailtr23:27:490
7450910,0irq/46-4a10000029517-21swap20:12:520
7450910,0irq/46-4a10000027588-21/usr/sbin/munin21:42:420
7450910,0irq/46-4a10000025725-21irqstats23:12:310
7450910,0irq/46-4a10000025675-21chrt20:02:310
7450910,0irq/46-4a10000019971-21seq00:31:550
7450910,0irq/46-4a1000001954-21ntpq20:27:470
7450910,0irq/46-4a10000018261-21chrt19:41:560
7450910,0irq/46-4a10000017112-21fw_forwarded_lo22:47:260
7450910,0irq/46-4a10000015970-21grep19:32:510
7450910,0irq/46-4a10000012932-21chrt19:25:320
7450910,0irq/46-4a10000011909-21tune2fs20:57:180
7450910,0irq/46-4a10000010941-21runrttasks22:28:110
7450910,0irq/46-4a10000010678-21mailstats20:52:480
7450910,0irq/46-4a1000001008-1kworker/u3:222:03:400
303142910,0sleep029892-1kworker/u3:221:52:020
7450900,0irq/46-4a1000005390-21ntpq20:37:420
7450900,0irq/46-4a1000003189-21sshd22:07:110
7450900,0irq/46-4a10000020680-21runrttasks21:22:340
7450900,0irq/46-4a10000020244-21/usr/sbin/munin19:47:100
7450900,0irq/46-4a10000015087-21cpu22:42:100
7450890,0irq/46-4a1000005146-21fw_conntrack23:47:230
7450890,0irq/46-4a10000032649-21memory21:57:390
7450890,0irq/46-4a10000018550-21ls19:42:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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