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2025-12-23 - 06:00
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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 the 100 highest latencies:
System rack1slot2.osadl.org (updated Tue Dec 23, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2209323927,0sleep30-21swapper/319:10:043
2193523625,0sleep10-21swapper/119:08:131
2190923626,0sleep20-21swapper/219:07:582
1620523625,0sleep00-21swapper/019:06:080
222299976,0cyclictest9381-21date21:50:522
222289977,0cyclictest3571-21lldpd23:10:301
339960,0migration/38351-21kthreadcore20:51:113
339960,0migration/37097-21sh22:24:363
339960,0migration/34166-21sh22:57:053
339960,0migration/326668-21sh21:59:283
339960,0migration/325131-21timerandwakeup23:26:163
339960,0migration/323046-21sh00:38:523
29805060,0irq/28-eth0-rx-8157-21kthreadcore00:31:103
29805060,0irq/28-eth0-rx-23157-21kthreadcore21:21:093
29805060,0irq/28-eth0-rx-22365-21grep00:01:133
222299960,0cyclictest0-21swapper/221:39:022
222279965,0cyclictest7650-21ls23:55:510
222279965,0cyclictest1649-21if_err_eth023:16:100
179960,0migration/14877-21latency22:21:131
149960,0migration/0339-21switchtime21:06:160
149960,0migration/022294-21taskset21:37:380
149960,0migration/016330-21sh22:30:190
8305050,0irq/26-0000:00:4003-21munin-run23:35:512
339950,0migration/37508-21switchtime20:26:153
339950,0migration/34876-21latency23:51:133
339950,0migration/34670-21taskset20:50:363
339950,0migration/331547-21kthreadcore19:36:113
339950,0migration/329632-21munin-node19:16:023
339950,0migration/329422-21kthreadcore21:41:083
339950,0migration/323856-21sh20:41:063
339950,0migration/323391-21fschecks_time19:56:073
339950,0migration/317368-21munin-node22:46:153
339950,0migration/314578-21irqcore22:11:083
339950,0migration/314414-21if_eth023:41:103
329950,0watchdog/39262-21cut23:01:113
329950,0watchdog/36355-1kworker/3:1H21:50:583
329950,0watchdog/330521-21perl20:01:063
329950,0watchdog/326105-40yum-updatesd-he21:03:023
329950,0watchdog/314326-21kthreadcore20:56:103
329950,0watchdog/30-21swapper/321:06:103
29815050,0irq/29-eth0-tx-20215-21kthreadcore00:01:122
29815050,0irq/29-eth0-tx-13128-21ssh00:31:442
29815050,0irq/29-eth0-tx-0-21swapper/223:56:132
29815050,0irq/29-eth0-tx-0-21swapper/021:11:040
29815050,0irq/29-eth0-tx-0-21swapper/020:16:150
29815050,0irq/29-eth0-tx-0-21swapper/019:52:120
29805050,0irq/28-eth0-rx-8295-21df22:26:063
29805050,0irq/28-eth0-rx-8247-21ssh21:11:313
29805050,0irq/28-eth0-rx-7081-21python23:16:183
29805050,0irq/28-eth0-rx-6627-21basename21:31:063
29805050,0irq/28-eth0-rx-5224-21tr00:11:103
29805050,0irq/28-eth0-rx-31399-21kthreadcore21:26:103
29805050,0irq/28-eth0-rx-28661-21munin-node23:31:083
29805050,0irq/28-eth0-rx-27477-21ssh22:52:003
29805050,0irq/28-eth0-rx-22822-21tune2fs22:16:053
29805050,0irq/28-eth0-rx-17290-21kthreadcore19:51:093
29805050,0irq/28-eth0-rx-16660-21uname21:16:133
29805050,0irq/28-eth0-rx-0-21swapper/323:56:583
29805050,0irq/28-eth0-rx-0-21swapper/323:21:403
29805050,0irq/28-eth0-rx-0-21swapper/323:09:303
29805050,0irq/28-eth0-rx-0-21swapper/322:31:043
29805050,0irq/28-eth0-rx-0-21swapper/322:06:053
29805050,0irq/28-eth0-rx-0-21swapper/322:01:193
29805050,0irq/28-eth0-rx-0-21swapper/321:46:283
29805050,0irq/28-eth0-rx-0-21swapper/319:46:013
29805050,0irq/28-eth0-rx-0-21swapper/300:28:043
29805050,0irq/28-eth0-rx-0-21swapper/300:21:133
259950,0migration/229340-21unixbench_multi20:41:172
249950,0watchdog/28900-21kthreadcore22:06:102
222299955,0cyclictest0-21swapper/222:56:552
222299955,0cyclictest0-21swapper/221:13:302
222299955,0cyclictest0-21swapper/200:22:032
222299954,0cyclictest3524-21snmpd23:14:572
222299950,0cyclictest0-21swapper/223:05:262
222299950,0cyclictest0-21swapper/200:26:282
222289955,0cyclictest18-21rcuc/121:28:361
222289955,0cyclictest0-21swapper/123:56:291
222289955,0cyclictest0-21swapper/123:46:051
222289955,0cyclictest0-21swapper/123:11:141
222289955,0cyclictest0-21swapper/122:45:421
222289955,0cyclictest0-21swapper/122:39:241
222289955,0cyclictest0-21swapper/122:32:271
222289955,0cyclictest0-21swapper/122:17:571
222289955,0cyclictest0-21swapper/121:52:531
222289955,0cyclictest0-21swapper/121:46:441
222279950,0cyclictest9663-21ssh22:42:160
222279950,0cyclictest1119-21diskmemload00:17:490
222279950,0cyclictest0-21swapper/022:59:370
222279950,0cyclictest0-21swapper/021:58:460
222279950,0cyclictest0-21swapper/019:56:160
179950,0migration/16208-21aten2.4-expect00:31:041
179950,0migration/13608-21taskset23:35:001
179950,0migration/128120-21kthreadcore19:36:101
179950,0migration/122006-21latency_hist23:45:511
179950,0migration/121086-21kthreadcore23:26:091
179950,0migration/120590-21sh21:21:061
179950,0migration/120059-21sh00:20:161
179950,0migration/119798-21munin-node21:01:051
179950,0migration/117897-21gltestperf00:01:091
169950,0watchdog/119212-21aten2.4-expect20:16:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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