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2024-06-16 - 23:37

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 highest latencies:
System rack4slot6s.osadl.org (updated Sun Jun 16, 2024 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485921410,2sleep024862-21latency_hist11:15:000
2258221370,3chrt22581-21munin-node09:00:090
700621350,3chrt7007-21/usr/sbin/munin10:05:170
25418213019,89sleep025422-21ntpq07:05:240
2141321300,4chrt21408-21ntp_states11:00:260
1740521210,3sleep017406-21latency_hist08:40:020
26319991158,91cyclictest5488-21df12:05:130
26319991158,91cyclictest19004-21ntp_states08:45:260
263199911510,91cyclictest25573-21users11:15:370
26319991139,90cyclictest26364-21wc09:15:010
26319991139,90cyclictest11738-21chrt08:17:490
26319991129,87cyclictest3169-21irqstats09:50:130
26319991128,90cyclictest14662-21munin-run08:30:010
26319991127,91cyclictest7280-21ntp_states08:00:250
26319991119,87cyclictest5897-21ntp_kernel_pll_10:00:250
26319991118,89cyclictest30566-21grep07:25:250
26319991118,88cyclictest11875-21chrt12:30:090
263199911110,88cyclictest28903-21sendmail-msp07:20:010
26319991109,89cyclictest16248-21ntp_states10:40:250
26319991109,87cyclictest564-21ntp_states11:45:250
26319991109,87cyclictest10939-21irqstats10:20:170
26319991108,89cyclictest12429-21/usr/sbin/munin08:20:250
26319991108,89cyclictest1015-21users07:35:370
26319991108,88cyclictest29078-21df_inode07:20:130
26319991107,90cyclictest14351-21grep12:40:010
263199911029,70cyclictest15954-21latency_hist08:35:010
263199911010,89cyclictest5490-21munin-run10:00:020
263199911010,86cyclictest6851-21sshd08:00:020
1759821100,3sleep017625-21memory08:40:200
26319991099,88cyclictest28850-21chrt11:30:090
26319991099,87cyclictest8251-21df10:10:130
26319991099,87cyclictest30871-21seq11:36:330
26319991099,86cyclictest1883-21ls07:40:210
26319991098,87cyclictest11817-21latency_hist12:30:020
26319991098,86cyclictest14075-21seq10:31:220
26319991097,88cyclictest20977-21munin-run11:00:010
26319991097,13cyclictest4200-21df12:00:130
263199910910,86cyclictest21431-21irqstats08:55:210
26319991089,86cyclictest2788-21runrttasks09:49:050
26319991089,86cyclictest269-21runrttasks10:35:090
26319991089,84cyclictest27452-21/usr/sbin/munin11:25:010
26319991089,83cyclictest18453-21latency_hist10:50:010
26319991088,87cyclictest2962-21seq11:55:170
26319991088,86cyclictest31540-21ls11:40:180
26319991087,88cyclictest9540-21/usr/sbin/munin10:15:130
26319991087,88cyclictest23596-21ls11:10:020
26319991087,87cyclictest9441-21munin-run08:10:010
26319991087,87cyclictest28665-21seq11:29:330
263199910829,68cyclictest31872-21/usr/sbin/munin09:35:230
26319991078,88cyclictest30336-21/usr/sbin/munin09:30:170
26319991078,85cyclictest2437-21chrt11:52:500
26319991078,84cyclictest31652-21chrt07:30:150
26319991077,88cyclictest5444-21munin-run07:55:010
26319991077,88cyclictest30216-21/usr/sbin/munin09:30:010
26319991077,87cyclictest26578-21/usr/sbin/munin07:10:210
26319991077,86cyclictest28354-21timerwakeupswit09:20:420
263199910728,66cyclictest20285-21/usr/sbin/munin08:50:250
26319991068,86cyclictest18561-21/usr/sbin/munin10:50:090
26319991068,84cyclictest7010-21ntp_states12:10:250
26319991068,71cyclictest9561-21seq08:10:100
26319991067,87cyclictest740-21/usr/sbin/munin09:40:210
26319991067,86cyclictest26507-21df09:15:130
263199910611,82cyclictest30629-21snmpd09:05:190
26319991057,84cyclictest7993-21chrt12:15:100
26319991056,86cyclictest10212-21chrt12:22:530
26319991034,11cyclictest13237-21latency_hist10:30:010
263199910320,74cyclictest108-21systemd-journal07:45:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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