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2022-12-02 - 18:14

x86 Intel Atom D2700 @2130 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #1, slot #6
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 -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100, highest latencies:
System rack1slot6.osadl.org (updated Fri Dec 02, 2022 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2911240,0irq_work/2311rcuc/208:10:102
2911090,0irq_work/2311rcuc/209:14:422
24280999222,0cyclictest210099rtkit-daemon09:29:373
103350890,0irq/28-eth0-tx-7650irq/26-ahci[00010:21:090
181860,0irq_work/0161rcuc/012:00:360
181790,0irq_work/0161rcuc/008:30:360
181790,0irq_work/0161rcuc/008:30:360
181770,0irq_work/0161rcuc/011:00:360
181770,0irq_work/0161rcuc/009:25:080
181760,0irq_work/0161rcuc/012:30:360
181730,0irq_work/0161rcuc/008:25:070
291720,0irq_work/2311rcuc/210:43:122
291710,0irq_work/2311rcuc/212:28:092
181700,0irq_work/0161rcuc/009:55:110
181690,0irq_work/0161rcuc/011:19:380
181680,0irq_work/0161rcuc/012:24:380
181680,0irq_work/0161rcuc/008:50:040
181680,0irq_work/0161rcuc/007:30:360
181660,0irq_work/0161rcuc/011:40:100
181650,0irq_work/0161rcuc/008:19:370
141650,0rcu_preempt0-21swapper/007:01:090
24280996327,0cyclictest3799migration/310:35:053
181630,0irq_work/0161rcuc/007:50:050
181610,0irq_work/0161rcuc/010:54:370
181610,0irq_work/0161rcuc/010:31:500
181610,0irq_work/0161rcuc/009:15:020
181610,0irq_work/0161rcuc/007:24:380
181610,0irq_work/0161rcuc/007:24:380
24280996029,0cyclictest3799migration/310:29:533
2426799601,0cyclictest210099rtkit-daemon12:09:300
361590,0irq_work/3381rcuc/310:05:403
291580,0irq_work/2311rcuc/211:40:132
291580,0irq_work/2311rcuc/209:29:542
24280995734,0cyclictest3799migration/312:14:493
221570,0irq_work/1241rcuc/111:39:371
24280995645,0cyclictest1234-21runrttasks10:11:463
181560,0irq_work/0161rcuc/007:05:090
141560,0rcu_preempt0-21swapper/307:04:113
103350560,0irq/28-eth0-tx-7650irq/26-ahci[00008:14:090
291550,0irq_work/2311rcuc/211:30:132
2428099552,0cyclictest210099rtkit-daemon08:44:493
221550,0irq_work/1241rcuc/110:19:581
181550,0irq_work/0161rcuc/011:30:100
141550,0rcu_preempt6166-21ps08:55:032
24280995443,0cyclictest21070-21unixbench_singl09:30:133
24280995431,0cyclictest3799migration/309:54:573
2427899542,0cyclictest210099rtkit-daemon08:39:442
181540,0irq_work/0161rcuc/012:14:370
181540,0irq_work/0161rcuc/010:35:060
181530,0irq_work/0161rcuc/012:15:030
291520,0irq_work/2311rcuc/208:35:052
291520,0irq_work/2311rcuc/208:35:052
24280995240,0cyclictest11005-21fschecks_time07:49:523
24280995213,0cyclictest3799migration/312:29:463
2427899523,0cyclictest210099rtkit-daemon08:31:302
2427899523,0cyclictest210099rtkit-daemon08:31:302
2427899522,0cyclictest210099rtkit-daemon08:25:112
2427899521,0cyclictest210099rtkit-daemon09:01:402
181520,0irq_work/0161rcuc/009:40:040
181520,0irq_work/0161rcuc/009:40:040
181520,0irq_work/0161rcuc/009:37:540
103350520,0irq/28-eth0-tx-7650irq/26-ahci[00007:39:590
361510,0irq_work/3381rcuc/312:20:453
2428099518,0cyclictest210099rtkit-daemon08:50:563
24280995134,0cyclictest3799migration/308:02:253
2428099512,0cyclictest210099rtkit-daemon08:27:473
2427899511,0cyclictest210099rtkit-daemon09:07:552
181510,0irq_work/0161rcuc/010:40:040
181510,0irq_work/0161rcuc/009:50:100
291500,0irq_work/2311rcuc/207:44:572
24280995044,0cyclictest23416-21taskset09:38:093
24280995036,0cyclictest3799migration/308:41:573
24280995031,0cyclictest3799migration/309:05:013
24280995028,0cyclictest3799migration/311:30:133
24280995022,0cyclictest8509-21grep10:19:543
24280995021,0cyclictest8171-21sshd07:43:093
24280995018,0cyclictest3799migration/310:54:563
24280995014,0cyclictest0-21swapper/310:41:023
24272995013,0cyclictest2399migration/107:59:531
181500,0irq_work/0161rcuc/008:40:050
181500,0irq_work/0161rcuc/007:10:050
361490,0irq_work/3381rcuc/311:25:043
291490,0irq_work/2311rcuc/211:01:032
24280994936,0cyclictest6816-21runrttasks08:57:073
24280994932,0cyclictest3799migration/307:29:493
24280994930,0cyclictest3799migration/309:45:053
24280994922,0cyclictest3799migration/307:20:053
24280994922,0cyclictest3799migration/307:20:053
24280994922,0cyclictest19641-21cut12:04:553
24280994919,0cyclictest3799migration/310:16:163
24280994919,0cyclictest3799migration/308:06:403
2427899491,0cyclictest210099rtkit-daemon09:25:502
2427899491,0cyclictest210099rtkit-daemon09:21:542
2427899491,0cyclictest210099rtkit-daemon09:10:222
2427899491,0cyclictest210099rtkit-daemon07:56:552
2427899491,0cyclictest210099rtkit-daemon07:15:222
2427899491,0cyclictest210099rtkit-daemon07:05:472
2427299491,0cyclictest210099rtkit-daemon11:40:041
2426799491,0cyclictest210099rtkit-daemon11:37:250
241490,0rcuc/11234-21runrttasks07:00:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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