You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-06-17 - 02:27
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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
Characteristics of the 50 highest latencies:
System rackbslot1.osadl.org (updated Mon Jun 16, 2025 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23328102217161,14sleep10-21swapper/107:07:361
23329222209157,42sleep30-21swapper/307:09:023
23327962207183,14sleep20-21swapper/207:07:242
23328042197168,19sleep00-21swapper/007:07:310
2333211997267,3cyclictest2647878-21latency_hist12:20:011
233320999727,64cyclictest2450236-21kworker/u8:1+efi_rts_wq09:09:580
233321199669,55cyclictest2450236-21kworker/u8:1+efi_rts_wq09:09:581
2333211996415,9cyclictest2612501-13chrome11:45:011
2333211996152,6cyclictest2359353-21/usr/share/muni07:35:011
2333211996146,13cyclictest2556242-21kworker/u8:5+flush-179:011:05:341
24458692580,1chrt2445859-21snmp_ryswitch.c09:00:041
2333211995854,3cyclictest2530078-21kworker/u8:4+flush-179:010:25:361
2333209995540,13cyclictest2551763-21snmp_wanswitch.10:45:010
2333211995343,8cyclictest2320028-21kworker/u8:3+flush-179:007:10:171
2333211995248,3cyclictest2430403-21kworker/u8:2+events_unbound08:50:371
2333209995238,5cyclictest2510228-31munin-html10:00:360
2333219995134,15cyclictest2551713-21chrome10:45:022
2333211995147,3cyclictest2370245-21ThreadPoolForeg07:45:111
2333211995145,4cyclictest2505717-21kworker/u8:0+flush-179:010:15:201
2333211994942,5cyclictest2420025-21/usr/share/muni08:35:031
2333211994942,5cyclictest2420025-21/usr/share/muni08:35:031
2333209994945,3cyclictest2430193-21CacheThread_Blo08:45:020
2333209994944,4cyclictest2621604-21ntpq11:50:350
26423472480,0chrt2642345-21users12:10:400
2333209994842,4cyclictest2384367-21latency_hist08:00:010
2333223994742,4cyclictest2632166-31munin-html12:00:383
2333219994741,5cyclictest1515606-21ThreadPoolForeg07:30:282
2333211994743,3cyclictest2556242-21kworker/u8:5+events_unbound11:10:201
2333223994644,1cyclictest2012992-1kworker/3:2H+kblockd10:42:423
2333211994643,2cyclictest2337853-21kworker/u8:4+flush-179:008:10:351
2333211994641,3cyclictest2363945-21kworker/u8:3+flush-179:008:25:181
2333209994640,4cyclictest2598771-21kworker/u8:2+flush-179:012:00:080
233321999458,36cyclictest2450236-21kworker/u8:1+efi_rts_wq09:09:572
2333219994534,10cyclictest2419434-21kworker/2:0+pm09:22:172
2333211994541,3cyclictest2466103-21kworker/u8:3+flush-179:009:25:181
2333219994440,3cyclictest2505951-21/usr/share/muni10:00:162
2333209994440,3cyclictest2626617-21munin-limits11:55:330
2333219994330,12cyclictest2469730-21kworker/2:2+pm11:49:202
2333211994341,2cyclictest2475359-21kworker/u8:5+flush-179:009:45:211
2333211994337,4cyclictest2358364-31munin-html07:30:331
2333211994335,6cyclictest2393638-31munin-html08:05:321
2333209994339,3cyclictest2420012-21/usr/share/muni08:35:180
2333209994339,3cyclictest2420012-21/usr/share/muni08:35:180
2333219994240,1cyclictest2354145-21kworker/2:3+pm08:20:202
2333219994240,1cyclictest2315208-21kworker/2:2+pm07:20:042
2333219994238,3cyclictest2282120-21kworker/u8:0+events_unbound07:15:162
2333219994230,1cyclictest1577604-1kworker/2:1H+kblockd07:26:502
2333211994238,3cyclictest2607310-21kworker/u8:0+flush-179:012:20:171
2333211994238,3cyclictest2450236-21kworker/u8:1+flush-179:009:15:291
2333211994238,2cyclictest2337853-21kworker/u8:4+events_unbound08:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional