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2025-07-15 - 15:09
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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 Jul 15, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1774623828,0sleep30-21swapper/306:27:233
1774623828,0sleep30-21swapper/306:27:233
17853993737,0cyclictest3466-21md0_resync10:25:510
1769623725,0sleep20-21swapper/206:26:462
1769623725,0sleep20-21swapper/206:26:462
1752523525,0sleep10-21swapper/106:24:531
1752523525,0sleep10-21swapper/106:24:531
1748322925,0sleep00-21swapper/006:24:240
1748322925,0sleep00-21swapper/006:24:240
8315080,0irq/26-0000:00:0-21swapper/309:28:133
329980,0watchdog/321031-21kthreadcore08:18:073
329980,0watchdog/30-21swapper/307:03:073
8315070,0irq/26-0000:00:26252-21perf08:27:413
8315070,0irq/26-0000:00:18950-21vmstat10:08:153
8315070,0irq/26-0000:00:0-21swapper/310:48:293
8315070,0irq/26-0000:00:0-21swapper/309:23:063
8315070,0irq/26-0000:00:0-21swapper/306:38:073
35170,0ktimersoftd/30-21swapper/308:54:253
329970,0watchdog/30-21swapper/310:13:063
329970,0watchdog/30-21swapper/309:03:113
8315060,0irq/26-0000:00:74132sleep311:56:253
8315060,0irq/26-0000:00:6613-21cpu09:07:583
8315060,0irq/26-0000:00:5570-21memory07:43:093
8315060,0irq/26-0000:00:36212chrt08:03:553
8315060,0irq/26-0000:00:23354-21perl06:53:013
8315060,0irq/26-0000:00:20310-21kthreadcore07:53:113
8315060,0irq/26-0000:00:18569-21awk11:08:053
8315060,0irq/26-0000:00:18489-21taskset08:13:483
8315060,0irq/26-0000:00:15905-21perl09:13:023
8315060,0irq/26-0000:00:0-21swapper/311:48:053
8315060,0irq/26-0000:00:0-21swapper/311:33:073
8315060,0irq/26-0000:00:0-21swapper/311:29:433
8315060,0irq/26-0000:00:0-21swapper/311:03:023
8315060,0irq/26-0000:00:0-21swapper/310:58:053
8315060,0irq/26-0000:00:0-21swapper/310:53:063
8315060,0irq/26-0000:00:0-21swapper/308:40:443
8315060,0irq/26-0000:00:0-21swapper/308:28:053
8315060,0irq/26-0000:00:0-21swapper/307:15:403
8315060,0irq/26-0000:00:0-21swapper/306:47:473
8315060,0irq/26-0000:00:0-21swapper/306:28:053
339960,0migration/38870-21sh09:44:393
329960,0watchdog/383150irq/26-0000:00:08:01:113
329960,0watchdog/310849-21if_err_eth1.307:28:033
329960,0watchdog/30-21swapper/311:43:143
329960,0watchdog/30-21swapper/311:23:463
329960,0watchdog/30-21swapper/311:17:503
329960,0watchdog/30-21swapper/310:42:463
329960,0watchdog/30-21swapper/310:34:423
329960,0watchdog/30-21swapper/310:31:503
329960,0watchdog/30-21swapper/310:23:183
329960,0watchdog/30-21swapper/310:06:313
329960,0watchdog/30-21swapper/309:58:473
329960,0watchdog/30-21swapper/309:32:593
329960,0watchdog/30-21swapper/308:43:033
329960,0watchdog/30-21swapper/308:36:473
329960,0watchdog/30-21swapper/307:36:473
329960,0watchdog/30-21swapper/306:33:473
29935060,0irq/33-eth0-tx-0-21swapper/211:28:082
29925060,0irq/32-eth0-rx-22056-21diskstats08:58:003
29925060,0irq/32-eth0-rx-18146-21taskset09:52:023
29925060,0irq/32-eth0-rx-0-21swapper/311:42:043
29925060,0irq/32-eth0-rx-0-21swapper/311:13:293
29925060,0irq/32-eth0-rx-0-21swapper/310:39:123
29925060,0irq/32-eth0-rx-0-21swapper/310:39:123
29925060,0irq/32-eth0-rx-0-21swapper/310:20:453
29925060,0irq/32-eth0-rx-0-21swapper/309:55:073
29925060,0irq/32-eth0-rx-0-21swapper/309:37:523
29925060,0irq/32-eth0-rx-0-21swapper/309:19:113
29925060,0irq/32-eth0-rx-0-21swapper/308:50:353
29925060,0irq/32-eth0-rx-0-21swapper/306:59:113
259960,0migration/224317-21kthreadcore10:33:042
178559966,0cyclictest6386-21runrttasks08:54:582
178539965,0cyclictest5362-21ps08:48:030
178539960,0cyclictest0-21swapper/010:56:150
178539960,0cyclictest0-21swapper/010:04:420
149960,0migration/03160-21sh08:45:530
149960,0migration/017032-21kthreadcore08:13:070
149960,0migration/013524-21kthreadcore10:43:080
8315050,0irq/26-0000:00:0-21swapper/307:37:593
8315050,0irq/26-0000:00:0-21swapper/307:23:043
8315050,0irq/26-0000:00:0-21swapper/307:18:153
8315050,0irq/26-0000:00:0-21swapper/307:08:093
8315050,0irq/26-0000:00:0-21swapper/306:43:013
4150,0ktimersoftd/00-21swapper/011:12:580
329950,0watchdog/30-21swapper/308:07:593
329950,0watchdog/30-21swapper/307:47:473
29935050,0irq/33-eth0-tx-6315-21iceccd07:18:340
29935050,0irq/33-eth0-tx-30081-21ssh09:18:142
29935050,0irq/33-eth0-tx-17473-21sh08:34:172
29935050,0irq/33-eth0-tx-17171-21munin-node07:33:060
29935050,0irq/33-eth0-tx-14244-21munin-node11:43:032
29935050,0irq/33-eth0-tx-12348-21cat10:08:002
29935050,0irq/33-eth0-tx-11433-21chrt10:06:352
29935050,0irq/33-eth0-tx-10133-21munin-node09:48:162
29935050,0irq/33-eth0-tx-0-21swapper/211:12:152
29935050,0irq/33-eth0-tx-0-21swapper/208:32:252
29935050,0irq/33-eth0-tx-0-21swapper/007:11:420
27150,0ktimersoftd/20-21swapper/210:44:542
27150,0ktimersoftd/20-21swapper/209:41:462
259950,0migration/29407-21sh09:46:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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