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2024-11-23 - 11:11
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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 rackeslot6.osadl.org (updated Sat Nov 23, 2024 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224387099138120,14cyclictest3779116-21cups-browsed00:00:011
22438709911099,8cyclictest2257254-21/usr/sbin/munin19:50:231
22438689910898,8cyclictest2271633-21/usr/sbin/munin20:35:220
22438709910696,7cyclictest2338053-21kworker/u8:0+flush-179:000:20:261
22438689910492,10cyclictest2296033-21/usr/sbin/munin21:50:230
22438689910393,7cyclictest3105085-21systemd-journal23:14:590
22438689910189,9cyclictest2344417-21latency_hist00:30:000
22438689910092,6cyclictest2319919-21kworker/u8:1+flush-179:023:20:260
2243870999985,11cyclictest2258911-21apt-get19:55:091
2243868999886,9cyclictest2315159-21latency_hist22:50:010
2243868999886,9cyclictest2315159-21latency_hist22:50:010
2243868999685,9cyclictest2283296-21/usr/sbin/munin21:10:240
2243868999583,10cyclictest2334797-40logrotate00:00:000
2243870999486,6cyclictest2272987-21apt-get20:40:031
2243870999382,8cyclictest2311728-21latency_hist22:40:001
2243870999282,7cyclictest2243737-21latency_hist19:10:011
2243868999267,23cyclictest2320203-21latency_hist23:10:020
2243868999179,10cyclictest2338285-21/usr/sbin/munin00:10:230
2243870998981,6cyclictest2311772-21kworker/u8:2+flush-179:022:55:211
2243870998979,8cyclictest2255172-21latency_hist19:45:001
2243868998978,8cyclictest2265028-21kworker/u8:0+flush-179:021:05:220
2243868998881,5cyclictest2290998-21kworker/u8:0+flush-179:021:45:130
2243868998881,5cyclictest2281711-21kworker/u8:2+flush-179:021:20:210
2243868998680,4cyclictest2320221-21kworker/u8:3+flush-179:023:45:210
2243868998580,4cyclictest2303729-21kworker/u8:1+flush-179:022:15:260
2243868998577,5cyclictest2316751-21latency_hist22:55:000
2243868998574,8cyclictest2320186-21kworker/u8:0+flush-179:023:40:140
2243870998371,9cyclictest2307186-21/usr/sbin/munin22:25:231
2243868998376,5cyclictest2311772-21kworker/u8:2+flush-179:023:00:210
2243870998257,14cyclictest2338044-21latency_hist00:10:011
2243868998274,6cyclictest2311727-21apt-get22:40:010
2243868998176,4cyclictest2257059-21kworker/u8:0+flush-179:019:55:250
2243868998173,5cyclictest2320221-21kworker/u8:3+flush-179:000:15:160
2243868998173,5cyclictest2320221-21kworker/u8:3+flush-179:000:15:150
2243868998070,8cyclictest2326841-21latency_hist23:35:020
2243868998070,8cyclictest2326841-21latency_hist23:35:020
2243868998070,8cyclictest2271393-21latency_hist20:35:010
2243868998069,9cyclictest2245603-21apt-get19:15:100
2243870997870,6cyclictest2266890-21apt-get20:20:131
2243868997769,5cyclictest2287875-21kworker/u8:3+events_unbound22:30:260
2243870997664,9cyclictest3105085-21systemd-journal21:20:001
2243868997669,4cyclictest2137262-21kworker/u8:0+flush-179:019:10:220
2243868997668,5cyclictest2320186-21kworker/u8:0+flush-179:023:15:210
2243870997569,5cyclictest2265028-21kworker/u8:0+flush-179:021:25:001
2243870997563,9cyclictest2283057-21latency_hist21:10:001
2243868997565,8cyclictest2247472-21apt-get19:20:110
2243868997562,11cyclictest2336717-21apt-get00:05:120
2243870997362,8cyclictest502-21rs:main1
2243870997362,8cyclictest502-21rs:main1
2243868997364,7cyclictest2312228-21/usr/sbin/munin22:40:210
2243870997160,8cyclictest2297418-21kworker/u8:2+events_unbound21:55:011
2243868997165,4cyclictest2248258-21kworker/u8:1+flush-179:020:05:210
2243868997163,6cyclictest3105085-21systemd-journal21:40:000
2243868997156,11cyclictest502-21rs:main0
2243870997052,16cyclictest2325488-21/usr/sbin/munin23:30:221
2243870997052,16cyclictest2325488-21/usr/sbin/munin23:30:211
2243868997058,9cyclictest2253569-21latency_hist19:40:020
2243870996961,6cyclictest2319919-21kworker/u8:1+flush-179:023:10:001
2243868996963,4cyclictest2137262-21kworker/u8:0+flush-179:019:25:220
2243868996961,6cyclictest2248258-21kworker/u8:1+flush-179:020:15:000
2243868996961,5cyclictest2287875-21kworker/u8:3+flush-179:022:05:170
2243868996960,6cyclictest2346005-21latency_hist00:35:020
224386899690,66cyclictest722-21Xorg19:30:590
2243868996859,6cyclictest2287875-21kworker/u8:3+events_unbound22:25:020
2243868996859,6cyclictest2287875-21kworker/u8:3+events_unbound22:25:020
2243868996859,5cyclictest2265028-21kworker/u8:0+flush-179:020:40:200
2243870996733,21cyclictest2294210-21latency_hist21:45:011
2243868996758,8cyclictest2320221-21kworker/u8:3+flush-179:023:50:200
2243868996656,5cyclictest2287875-21kworker/u8:3+flush-179:022:25:210
2243870996556,6cyclictest2303752-21latency_hist22:15:011
2243870996554,8cyclictest2291017-21latency_hist21:35:011
2243868996554,9cyclictest3105085-21systemd-journal21:05:010
2243870996459,4cyclictest2248258-21kworker/u8:1+flush-179:020:20:011
2243870996451,10cyclictest2311772-21kworker/u8:2+flush-179:022:45:231
2243870996451,10cyclictest2311772-21kworker/u8:2+flush-179:022:45:221
2243868996458,5cyclictest2265028-21kworker/u8:0+flush-179:020:17:100
2243870996351,10cyclictest2318611-21apt-get23:00:121
2243868996356,5cyclictest2248258-21kworker/u8:1+flush-179:019:45:140
2243868996350,9cyclictest3105085-21systemd-journal00:04:010
2243870996253,7cyclictest2249059-21apt-get19:25:121
2243868996250,9cyclictest2320221-21kworker/u8:3+flush-179:023:30:000
2243870996156,4cyclictest2320221-21kworker/u8:3+flush-179:000:15:001
2243870996148,10cyclictest2262394-21diskstats20:05:141
2243870996055,4cyclictest2271428-21kworker/u8:2+flush-179:020:45:311
2243870995950,7cyclictest2328433-21latency_hist23:40:001
2243870995948,8cyclictest2343069-21/usr/sbin/munin00:25:231
2243870995948,7cyclictest2312246-21apt-get22:40:101
2243868995952,5cyclictest2311772-21kworker/u8:2+flush-179:022:55:190
2243870995848,8cyclictest2331617-21latency_hist23:50:011
2243870995846,10cyclictest2279881-21apt-get21:00:111
2243868995852,5cyclictest2265028-21kworker/u8:0+events_unbound20:55:230
2243868995852,4cyclictest2290998-21kworker/u8:0+flush-179:021:40:170
2243868995851,5cyclictest2287875-21kworker/u8:3+flush-179:022:10:190
2243868995848,8cyclictest2320221-21kworker/u8:3+events_unbound00:25:000
2243870995749,6cyclictest2287875-21kworker/u8:3+flush-179:021:35:201
2243870995748,7cyclictest2333204-21latency_hist23:55:011
2243870995646,8cyclictest2320221-21kworker/u8:3+events_unbound00:04:031
2243868995650,4cyclictest2285410-21kworker/u8:1+events_unbound21:15:200
2243870995547,6cyclictest2137262-21kworker/u8:0+events_unbound19:20:131
2243870995546,7cyclictest2320221-21kworker/u8:3+flush-179:023:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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