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2022-12-02 - 01:12

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.4.229-rt200 (Profile)

Latency plot of system in rack #1, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -n -a -t3 -p99 -i200 -h400 -q
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 Thu Dec 01, 2022 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69723829,0sleep20-21swapper/218:33:562
39023625,0sleep00-21swapper/018:30:260
69523026,0sleep10-21swapper/118:33:551
47122925,0sleep30-21swapper/318:31:213
8089960,0cyclictest0-21swapper/223:23:562
8089960,0cyclictest0-21swapper/223:15:442
8059960,0cyclictest0-21swapper/023:07:310
339960,0migration/32302-21fschecks_time23:01:083
339960,0migration/320579-21sh20:35:043
339960,0migration/319366-21irqcore23:34:263
339960,0migration/311542-21sh23:48:353
28015060,0irq/29-eth0-tx-1716-21munin-node18:39:240
28005060,0irq/28-eth0-rx-5667-21cut20:50:033
28005060,0irq/28-eth0-rx-22537-21cut22:20:043
28005060,0irq/28-eth0-rx-21127-21fschecks_count23:54:273
28005060,0irq/28-eth0-rx-17959-21munin-run22:14:093
149960,0migration/028234-21latency_hist20:39:100
149960,0migration/016158-21sh21:31:230
149960,0migration/011094-21sh21:59:250
8315050,0irq/26-0000:00:28446-21sort21:04:102
8315050,0irq/26-0000:00:12088-21latency_hist20:24:102
8089955,0cyclictest0-21swapper/223:09:452
8089955,0cyclictest0-21swapper/222:23:142
8089955,0cyclictest0-21swapper/222:09:222
8089955,0cyclictest0-21swapper/221:40:122
8089955,0cyclictest0-21swapper/221:29:572
8089953,0cyclictest14023-21lldpd20:20:332
8089950,0cyclictest0-21swapper/222:59:592
8079950,0cyclictest0-21swapper/123:58:291
8079950,0cyclictest0-21swapper/123:07:051
8079950,0cyclictest0-21swapper/122:18:411
8079950,0cyclictest0-21swapper/121:36:541
8059955,0cyclictest0-21swapper/023:21:420
8059955,0cyclictest0-21swapper/021:39:320
8059955,0cyclictest0-21swapper/021:35:450
8059955,0cyclictest0-21swapper/021:12:060
8059950,0cyclictest0-21swapper/023:35:250
8059950,0cyclictest0-21swapper/022:33:560
339950,0migration/38726-21taskset23:27:483
339950,0migration/3695-21kthreadcore19:25:183
339950,0migration/35605-21kthreadcore21:54:493
339950,0migration/331534-21kthreadcore23:59:333
339950,0migration/331356-21idleruntime18:59:293
339950,0migration/329229-21kthreadcore20:01:573
339950,0migration/325806-21kthreadcore19:55:503
339950,0migration/318596-21diskmemload22:14:463
339950,0migration/316317-21taskset23:30:033
339950,0migration/314796-21munin-node18:44:563
339950,0migration/313971-21kthreadcore23:49:273
339950,0migration/313288-21kthreadcore20:54:593
339950,0migration/312817-21taskset22:03:233
329950,0watchdog/39660-21crond19:34:103
329950,0watchdog/318028-21kthreadcore23:14:333
329950,0watchdog/317346-21kthreadcore19:14:383
329950,0watchdog/312325-21ls19:09:103
28015050,0irq/29-eth0-tx-21153-21iostat_ios21:00:122
28015050,0irq/29-eth0-tx-20050-21diskmemload22:54:272
28015050,0irq/29-eth0-tx-18150-21ntp_states23:49:312
28015050,0irq/29-eth0-tx-0-21swapper/221:49:502
28015050,0irq/29-eth0-tx-0-21swapper/221:18:372
28015050,0irq/29-eth0-tx-0-21swapper/019:04:040
28005050,0irq/28-eth0-rx-4109-21ntp_offset22:26:053
28005050,0irq/28-eth0-rx-20387-21sed22:45:173
28005050,0irq/28-eth0-rx-0-21swapper/323:20:473
28005050,0irq/28-eth0-rx-0-21swapper/323:09:333
28005050,0irq/28-eth0-rx-0-21swapper/323:09:003
28005050,0irq/28-eth0-rx-0-21swapper/322:56:313
28005050,0irq/28-eth0-rx-0-21swapper/322:50:493
28005050,0irq/28-eth0-rx-0-21swapper/322:39:333
28005050,0irq/28-eth0-rx-0-21swapper/322:29:543
28005050,0irq/28-eth0-rx-0-21swapper/322:05:493
28005050,0irq/28-eth0-rx-0-21swapper/322:05:493
28005050,0irq/28-eth0-rx-0-21swapper/321:49:303
28005050,0irq/28-eth0-rx-0-21swapper/321:44:133
28005050,0irq/28-eth0-rx-0-21swapper/321:19:303
28005050,0irq/28-eth0-rx-0-21swapper/321:16:423
28005050,0irq/28-eth0-rx-0-21swapper/321:13:203
28005050,0irq/28-eth0-rx-0-21swapper/321:05:323
28005050,0irq/28-eth0-rx-0-21swapper/321:01:543
259950,0migration/25072-21latency_hist19:04:102
259950,0migration/221312-21kthreadcore23:34:272
259950,0migration/21181-21latency_hist21:14:102
259950,0migration/211275-21sh22:39:402
19150,0ktimersoftd/10-21swapper/122:40:171
19150,0ktimersoftd/10-21swapper/121:18:361
179950,0migration/18893-21latency_hist18:44:101
179950,0migration/18505-21taskset18:41:371
179950,0migration/12591-21taskset23:01:091
179950,0migration/121813-21kthreadcore21:00:131
179950,0migration/120928-21fschecks_time19:55:351
179950,0migration/118123-21munin-node19:44:481
179950,0migration/118069-21needreboot23:49:291
169950,0watchdog/19665-21sh19:34:101
149950,0migration/07737-21sh23:25:190
149950,0migration/06135-21kthreadcore19:29:460
149950,0migration/05172-21latency_hist19:04:100
149950,0migration/03679-21latency_hist21:19:100
149950,0migration/03558-21kthreadcore22:26:020
149950,0migration/032179-21kthreadcore23:59:330
149950,0migration/031596-21sh22:56:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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