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2023-01-27 - 16:16

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, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack1slot2.osadl.org (updated Fri Jan 27, 2023 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2659325349,0sleep10-21swapper/106:26:531
2582625251,0sleep00-21swapper/006:22:350
2634623927,0sleep20-21swapper/206:24:012
2634223627,0sleep30-21swapper/306:23:583
266889977,0cyclictest2431-21nvme09:47:320
339960,0migration/38120-21taskset10:31:063
339960,0migration/3539-21gltestperf09:52:313
339960,0migration/331701-21sh08:41:493
339960,0migration/331424-21sh11:36:443
339960,0migration/330874-21sh09:15:163
339960,0migration/330824-21kthreadcore11:52:293
339960,0migration/313022-21sh08:31:063
339960,0migration/311579-21unixbench-2d06:57:413
28005060,0irq/28-eth0-rx-4821-21cut09:17:343
28005060,0irq/28-eth0-rx-392-21perl08:42:283
28005060,0irq/28-eth0-rx-23529-21perl10:57:303
28005060,0irq/28-eth0-rx-14867-21cut10:17:393
28005060,0irq/28-eth0-rx-11027-21munin-node10:12:463
28005060,0irq/28-eth0-rx-11027-21munin-node10:12:463
267049960,0cyclictest0-21swapper/209:55:172
266889965,0cyclictest29805-21ssh10:23:200
266889960,0cyclictest0-21swapper/009:19:470
266889960,0cyclictest0-21swapper/008:30:450
149960,0migration/08820-21sh11:42:180
149960,0migration/026915-21sh10:41:560
149960,0migration/025108-21sh11:48:150
149960,0migration/014814-21sh09:42:440
149960,0migration/014329-21kthreadcore10:32:330
8315050,0irq/26-0000:00:29939-21kthreadcore07:57:412
35150,0ktimersoftd/30-21swapper/309:06:543
339950,0migration/36503-21sh11:02:533
339950,0migration/36125-21kthreadcore10:47:303
339950,0migration/331975-21kthreadcore07:57:423
339950,0migration/331636-21irqcore06:52:363
339950,0migration/331087-21kthreadcore10:07:383
339950,0migration/329536-21kthreadcore07:12:333
339950,0migration/329176-21munin-node06:47:363
339950,0migration/32839-21kthreadcore08:02:313
339950,0migration/32836-21kthreadcore07:37:493
339950,0migration/327362-21kthreadcore10:22:423
339950,0migration/32564-21kthreadcore08:22:363
339950,0migration/322876-21taskset06:46:053
339950,0migration/320624-21if_eth107:07:363
339950,0migration/320342-21kthreadcore10:02:363
339950,0migration/317676-21kthreadcore08:32:433
339950,0migration/316289-21fschecks_count07:27:303
339950,0migration/313928-21cpuspeed_turbos09:07:283
339950,0migration/31278-21diskmemload08:57:353
339950,0migration/312657-21fschecks_count07:47:283
339950,0migration/311226-21kthreadcore07:22:363
339950,0migration/311129-21kthreadcore09:22:353
339950,0migration/310853-21kthreadcore08:47:313
339950,0migration/310660-21kthreadcore10:32:323
339950,0migration/310047-21kthreadcore08:07:333
329950,0watchdog/327357-21ssh11:17:193
329950,0watchdog/324401-21cut08:17:363
329950,0watchdog/320859-21kthreadcore07:52:363
329950,0watchdog/318080-21kthreadcore07:02:363
329950,0watchdog/30-21swapper/311:22:273
28015050,0irq/29-eth0-tx-934-21iostat_ios09:17:322
28015050,0irq/29-eth0-tx-30719-21ssh08:39:482
28015050,0irq/29-eth0-tx-1918-21ssh10:08:062
28015050,0irq/29-eth0-tx-1224-21kthreadcore10:27:382
28015050,0irq/29-eth0-tx-0-21swapper/210:05:382
28015050,0irq/29-eth0-tx-0-21swapper/209:49:492
28015050,0irq/29-eth0-tx-0-21swapper/209:35:362
28015050,0irq/29-eth0-tx-0-21swapper/209:01:132
28005050,0irq/28-eth0-rx-8962-21aten2_r1power_e11:07:223
28005050,0irq/28-eth0-rx-21370-21kthreadcore09:27:333
28005050,0irq/28-eth0-rx-20542-21kthreadcore10:37:303
28005050,0irq/28-eth0-rx-16556-21kthreadcore09:42:473
28005050,0irq/28-eth0-rx-16230-21ssh11:43:583
28005050,0irq/28-eth0-rx-14012-21lldpd06:37:193
28005050,0irq/28-eth0-rx-1129-21munin-node11:37:333
28005050,0irq/28-eth0-rx-0-21swapper/311:48:513
28005050,0irq/28-eth0-rx-0-21swapper/311:30:053
28005050,0irq/28-eth0-rx-0-21swapper/311:14:083
28005050,0irq/28-eth0-rx-0-21swapper/310:52:513
28005050,0irq/28-eth0-rx-0-21swapper/310:43:173
28005050,0irq/28-eth0-rx-0-21swapper/309:57:283
28005050,0irq/28-eth0-rx-0-21swapper/309:48:453
28005050,0irq/28-eth0-rx-0-21swapper/309:37:183
28005050,0irq/28-eth0-rx-0-21swapper/309:32:533
28005050,0irq/28-eth0-rx-0-21swapper/308:53:193
267049955,0cyclictest0-21swapper/211:55:442
267049955,0cyclictest0-21swapper/210:35:102
267049950,0cyclictest0-21swapper/211:41:422
267049950,0cyclictest0-21swapper/211:24:122
267049950,0cyclictest0-21swapper/210:26:212
267049950,0cyclictest0-21swapper/208:57:072
266999950,0cyclictest0-21swapper/111:22:371
266999950,0cyclictest0-21swapper/111:04:391
266999950,0cyclictest0-21swapper/110:28:131
266999950,0cyclictest0-21swapper/109:23:451
266999950,0cyclictest0-21swapper/109:15:521
266889955,0cyclictest0-21swapper/010:17:580
266889950,0cyclictest0-21swapper/011:30:200
266889950,0cyclictest0-21swapper/009:13:100
259950,0migration/223545-21fschecks_time10:57:302
259950,0migration/219217-21munin-node10:37:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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