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2024-11-24 - 07:27

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 100 highest latencies:
System rack4slot6s.osadl.org (updated Sun Nov 24, 2024 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1235822620,2sleep012359-21/usr/sbin/munin20:45:250
959722530,2sleep09598-21/usr/sbin/munin20:35:170
2355722450,3sleep023558-21awk23:35:150
1622022370,2sleep016219-21/usr/sbin/munin23:05:280
1843521380,3chrt18432-21cat21:10:020
1135221340,4chrt11351-21/usr/sbin/munin20:40:290
3205121320,3sleep032053-21grep19:55:290
1112721320,4chrt11126-21sshd22:45:290
18930212820,86sleep018957-21ntp_states19:05:190
19877991148,91cyclictest23861-21/usr/sbin/munin19:25:160
19877991139,91cyclictest4400-21grep22:20:200
19877991138,89cyclictest6889-21/usr/sbin/munin20:25:170
19877991137,91cyclictest26428-21/usr/sbin/munin19:35:240
19877991137,90cyclictest1539-21/usr/sbin/munin22:10:290
198779911334,69cyclictest30442-21/usr/sbin/munin19:50:160
198779911321,80cyclictest28316-21runrttasks21:46:480
19877991129,89cyclictest6597-21ls22:30:010
19877991129,89cyclictest2544-21seq00:20:010
19877991127,91cyclictest26346-21/usr/sbin/munin23:45:210
19877991127,89cyclictest29821-21tr00:00:010
198779911232,69cyclictest31425-21/usr/sbin/munin00:05:180
19877991119,88cyclictest3593-21users20:10:290
198779911110,87cyclictest1469-21seq20:04:000
19877991109,88cyclictest22579-21memory21:25:170
19877991109,87cyclictest5290-21df_inode00:30:170
19877991109,87cyclictest30089-21irqstats00:00:170
19877991109,73cyclictest15965-21df21:00:110
19877991108,89cyclictest25142-21memory21:35:170
198779911015,83cyclictest24149-21mailstats21:30:290
198779911011,87cyclictest28030-21seq23:51:050
198779911010,87cyclictest19160-21chrt23:17:290
19877991099,86cyclictest22613-21which23:30:280
19877991098,88cyclictest3094-21/usr/sbin/munin22:15:210
198779910929,71cyclictest8474-21wc22:35:290
19877991089,86cyclictest9214-21chrt20:34:090
19877991088,89cyclictest4342-21df20:15:130
19877991088,88cyclictest31305-21grep22:00:010
19877991088,87cyclictest29995-21munin-run21:55:010
19877991088,86cyclictest25290-21irqstats19:30:170
19877991088,86cyclictest21852-21users19:15:290
19877991087,88cyclictest31475-21egrep22:00:130
19877991087,88cyclictest28798-21chrt19:44:170
19877991087,86cyclictest2715-21df00:20:130
198779910810,87cyclictest20974-21munin-run21:20:010
198779910810,70cyclictest22275-21modprobe21:25:000
19877991079,85cyclictest6771-21df_inode22:30:170
19877991078,86cyclictest15125-21/usr/sbin/munin20:55:290
19877991077,88cyclictest19681-21df23:20:130
19877991077,87cyclictest24784-21/usr/sbin/munin23:40:090
19877991077,86cyclictest23422-21sshd19:22:290
19877991077,85cyclictest32570-21df00:10:130
19877991076,88cyclictest7095-21runrttasks00:35:290
19877991068,85cyclictest17750-21runrttasks23:11:290
19877991068,85cyclictest10090-21chrt22:42:050
19877991067,88cyclictest21062-21sshd19:14:290
19877991067,87cyclictest21257-21/usr/sbin/munin23:25:250
19877991067,85cyclictest6792-21date20:25:010
19877991066,87cyclictest14507-21df_inode23:00:130
19877991059,83cyclictest1909-21memory20:05:170
19877991057,86cyclictest26557-21ntp_states21:40:210
198779910511,81cyclictest13611-21ntp_states20:50:220
19877991048,85cyclictest3995-21df00:25:130
19877991047,83cyclictest29609-21awk19:45:290
19877991037,84cyclictest14175-21seq22:59:040
198779910324,67cyclictest19264-21seq21:11:450
19877991027,83cyclictest32715-21/usr/sbin/munin22:05:210
19877991016,83cyclictest12457-21users22:50:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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