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2024-07-25 - 05:59
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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 50 highest latencies:
System rackeslot6.osadl.org (updated Thu Jul 25, 2024 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2410449999385,6cyclictest2495109-21kworker/u8:1+events_unbound00:00:001
2410449998982,5cyclictest2462803-21latency_hist21:50:021
2410445998877,8cyclictest2466240-21latency_hist22:00:000
2410445998547,36cyclictest2434214-21diskstats20:20:150
2410449998377,5cyclictest2499918-21kworker/u8:3+events_unbound00:25:001
2410445998271,8cyclictest2438687-21latency_hist20:35:000
2410445998271,8cyclictest2438687-21latency_hist20:35:000
2410445998169,9cyclictest2442004-21gpgv20:45:000
2410449998073,6cyclictest2478676-21kworker/u8:0+flush-179:023:39:591
2410449997969,8cyclictest2480800-21/usr/sbin/munin22:45:241
2410445997969,7cyclictest2423338-21latency_hist19:50:010
2410449997771,4cyclictest2464436-21kworker/u8:3+events_unbound22:10:221
2410449997770,5cyclictest2475822-21kworker/u8:4+events_unbound22:30:131
2410449997672,3cyclictest2464436-21kworker/u8:3+flush-179:022:05:261
2410449997465,7cyclictest2483136-21kworker/u8:3+events_unbound23:15:231
2410449997367,5cyclictest2475822-21kworker/u8:4+events_unbound22:35:261
2410449997367,4cyclictest2490114-21kworker/u8:2+events_unbound23:35:001
2410449997266,4cyclictest2430455-21kworker/u8:3+flush-179:020:35:151
2410449997266,4cyclictest2415129-21kworker/u8:1+flush-179:019:35:011
2410449997163,6cyclictest2462794-21kworker/u8:2+events_unbound22:00:251
2410449997157,4cyclictest2480598-21kworker/u8:2+events_unbound22:55:131
2410445997065,4cyclictest2483136-21kworker/u8:3+events_unbound23:00:240
2410445997065,4cyclictest2478681-21kworker/u8:1+events_unbound22:45:000
2410445997065,4cyclictest2478681-21kworker/u8:1+events_unbound22:45:000
2410445997065,4cyclictest2459682-21kworker/u8:3+events_unbound21:45:280
2410449996856,3cyclictest2453233-21kworker/u8:2+flush-179:021:20:251
2410449996847,4cyclictest2490114-21kworker/u8:2+flush-179:023:25:001
2410445996858,7cyclictest2507883-21/usr/sbin/munin00:20:260
2410449996759,6cyclictest2495109-21kworker/u8:1+flush-179:000:00:241
2410445996756,9cyclictest476-21rs:main0
2410449996660,4cyclictest2490114-21kworker/u8:2+events_unbound23:25:011
2410449996659,5cyclictest2458021-21kworker/u8:0+flush-179:021:40:251
2410449996559,5cyclictest2430455-21kworker/u8:3+events_unbound20:25:231
2410449996557,5cyclictest2499890-21kworker/u8:2+events_unbound23:45:131
2410449996556,7cyclictest2416730-21apt-get19:29:591
2410449996550,10cyclictest2483136-21kworker/u8:3+flush-179:022:55:001
2410449996458,4cyclictest2453233-21kworker/u8:2+events_unbound21:35:151
2410449996358,4cyclictest2430455-21kworker/u8:3+flush-179:020:20:201
2410449996354,6cyclictest2428614-21kworker/u8:0+events_unbound20:10:231
2410452996255,5cyclictest2478976-21turbostat22:40:003
2410449996256,5cyclictest2409035-21kworker/u8:0+events_unbound19:10:221
2410449996255,5cyclictest2475819-21kworker/u8:3+flush-179:022:40:191
2410449996255,5cyclictest2475819-21kworker/u8:3+flush-179:022:40:191
2410445996256,4cyclictest1-21systemd20:30:000
2410445996255,4cyclictest2453233-21kworker/u8:2+events_unbound21:35:280
2410449996155,5cyclictest2444263-21kworker/u8:2+events_unbound20:55:241
2410449996155,4cyclictest2478676-21kworker/u8:0+events_unbound23:40:131
2410449996149,9cyclictest2463058-21apt-get21:50:141
2410445996149,9cyclictest2415393-21apt-get19:25:110
2410449996054,5cyclictest2444263-21kworker/u8:2+events_unbound21:00:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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