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2024-04-26 - 22:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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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.

Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack4slot6s.osadl.org (updated Fri Apr 26, 2024 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2464822490,2sleep024649-21cat11:30:290
1155522400,2sleep011556-21ntpq10:40:190
2787021750,3sleep027873-21sort07:30:180
472721510,4sleep04744-21fw_packets12:20:150
3036021400,3chrt30358-21df_inode07:40:110
2413421370,4chrt24133-21awk07:15:250
974721330,4chrt9750-21latency_hist12:40:010
1296421310,3chrt12965-21missed_timers08:40:200
71121270,3chrt712-21ntp_states07:50:260
2882921220,2sleep028831-21ls09:40:280
608521160,3chrt6087-21switchtime08:10:270
715521110,4sleep06857-21/usr/sbin/munin08:15:240
1917621070,4sleep019187-21latency11:10:200
2954721050,3sleep029358-21/usr/sbin/munin11:50:200
1066321030,4sleep010731-21/usr/sbin/munin08:30:250
271052980,3sleep027107-21irqstats09:35:190
182032940,3sleep018246-21switchtime11:05:330
228442930,3sleep022848-21ntpq07:10:240
85702860,3sleep08606-21date10:30:000
312102840,3sleep031211-21cat11:55:280
257432840,3sleep025766-21basename09:30:150
291852824,12sleep029187-21memory07:35:200
325872814,65sleep032588-21sshd07:48:480
89402785,60sleep08941-21sshd08:21:480
258012783,63sleep00-21swapper07:20:520
2135627820,35sleep021391-21/usr/sbin/munin07:05:180
131952703,5sleep00-21swapper10:45:360
22451996626,16cyclictest28576-21ls11:45:270
22451996427,27cyclictest2150-21/usr/sbin/munin12:10:150
22451996323,14cyclictest22092-21ntpq09:15:260
2245199619,18cyclictest22914-21/usr/sbin/munin11:25:180
2245199599,16cyclictest16611-21/usr/sbin/munin08:55:290
22451995936,15cyclictest23168-21/usr/sbin/munin09:20:120
22451995910,16cyclictest7526-21ntp_states12:30:260
2245199589,17cyclictest279-21sshd08:40:020
2245199589,16cyclictest279-21sshd11:40:490
2245199589,16cyclictest20791-21ntp_states09:10:220
2245199589,15cyclictest2865-21munin-run08:00:000
2245199588,16cyclictest966-21/usr/sbin/munin10:00:340
2245199588,16cyclictest15136-21/usr/sbin/munin10:55:250
2245199587,18cyclictest14561-21grep08:45:280
22451995834,14cyclictest14341-21/usr/sbin/munin10:50:330
22451995811,21cyclictest20362-21df11:15:110
2245199579,20cyclictest5460-21idleruntime-cro08:10:010
2245199578,16cyclictest25477-21/usr/sbin/munin11:35:150
2245199577,17cyclictest24398-21/usr/sbin/munin09:25:170
22451995732,17cyclictest27676-21latency_hist07:30:020
22451995712,18cyclictest30881-21df09:50:110
22451995712,17cyclictest3583-21df10:10:090
2245199569,17cyclictest29546-21/usr/sbin/munin09:45:260
2245199568,17cyclictest3339-21/usr/sbin/munin12:15:140
2245199568,16cyclictest6137-21/usr/sbin/munin10:20:130
2245199568,16cyclictest15377-21df08:50:100
2245199566,16cyclictest4823-21egrep10:15:100
22451995633,14cyclictest31939-21runrttasks12:00:080
22451995632,15cyclictest8845-21/usr/sbin/munin10:30:160
22451995618,11cyclictest2449-21memory10:05:200
22451995611,17cyclictest3596-21users08:00:290
22451995611,13cyclictest17919-21/usr/sbin/munin09:00:300
2245199559,17cyclictest5941-21/usr/sbin/munin12:25:250
2245199558,15cyclictest279-21sshd09:55:490
2245199558,14cyclictest16449-21/usr/sbin/munin11:00:140
22451995533,14cyclictest9794-21runrttasks08:28:000
22451995530,15cyclictest20270-21runrttasks09:09:150
2245199547,15cyclictest279-21sshd10:35:490
2245199546,16cyclictest21625-21/usr/sbin/munin11:20:150
22451995410,17cyclictest1732-21seq12:08:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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