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2024-07-12 - 17:26

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 376 highest latencies:
System rack4slot6s.osadl.org (updated Fri Jul 12, 2024 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1219621400,2sleep012195-21vmstat10:35:370
2706821350,4sleep027070-21egrep11:35:090
429621340,3chrt4297-21/usr/sbin/munin10:05:280
146321320,3sleep01461-21proc_pri12:00:300
1164121320,4chrt11643-21sh08:30:000
161921290,4chrt1618-21/usr/sbin/munin07:50:170
542321200,2sleep05422-21ntp_offset10:10:250
234799912010,19cyclictest29744-21sendmail-msp09:40:010
23479991199,16cyclictest29044-21ntp_states07:30:300
23479991198,15cyclictest11763-21/usr/sbin/munin08:30:130
23479991189,14cyclictest22205-21ntp_states11:15:290
23479991188,16cyclictest14608-21grep10:45:290
23479991186,15cyclictest2716-21/usr/sbin/munin07:55:370
1996721180,2sleep019970-21cut09:00:350
234799911710,16cyclictest7209-21users08:10:370
23479991169,17cyclictest8856-21chrt08:18:300
23479991169,17cyclictest11315-21munin-run12:40:010
23479991167,14cyclictest31252-21ntp_states11:50:290
234799911610,93cyclictest30016-21irqstats09:40:210
234799911610,16cyclictest3540-21seq10:03:340
23479991159,15cyclictest1319-21munin-run07:50:010
23479991159,15cyclictest10294-21/usr/sbin/munin10:30:370
23479991158,15cyclictest23807-21grep11:20:330
234799911511,14cyclictest5400-21fw_packets08:05:140
23479991149,15cyclictest28780-21/usr/sbin/munin11:40:290
23479991148,15cyclictest13812-21chrt10:43:090
23479991148,14cyclictest24502-21chrt09:19:420
23479991148,14cyclictest15695-21/usr/sbin/munin08:45:130
23479991147,13cyclictest24902-21/usr/sbin/munin09:20:210
23479991139,14cyclictest370-21ntpd12:05:250
23479991139,13cyclictest27570-21ntp_states09:30:250
23479991138,17cyclictest15534-21ls08:45:020
23479991138,15cyclictest31478-21irqstats07:40:170
23479991138,15cyclictest13332-21ntp_states08:35:210
234799911311,19cyclictest15581-21if_eth010:50:170
234799911310,18cyclictest2423-21munin-run10:00:010
234799911310,14cyclictest30429-21find07:35:290
23479991129,17cyclictest26433-21ntp_kernel_pll_07:20:200
23479991129,16cyclictest25783-21/usr/sbin/munin11:30:190
23479991129,15cyclictest8894-21munin-run10:25:010
23479991129,11cyclictest173672sleep010:55:410
23479991128,16cyclictest6610-21/usr/sbin/munin10:15:210
23479991128,15cyclictest9508-21seq12:30:490
23479991128,14cyclictest170712chrt08:50:180
23479991127,14cyclictest27820-21/usr/sbin/munin07:25:290
23479991127,14cyclictest25001-21/usr/sbin/munin07:15:170
23479991127,12cyclictest5274-21ntp_states12:15:290
23479991126,14cyclictest7722-21awk12:25:170
234799911215,11cyclictest20550-21ls11:10:010
234799911210,15cyclictest6300-21/usr/sbin/munin12:20:350
23479991119,13cyclictest4940-21chrt08:02:570
23479991118,16cyclictest18510-21ntpq08:55:260
23479991118,15cyclictest3917-21cat12:10:220
23479991118,15cyclictest20850-21df09:05:090
23479991118,12cyclictest29738-21awk11:45:140
23479991117,11cyclictest20950-21/usr/sbin/munin11:10:260
234799911110,18cyclictest32480-21ntpq11:55:220
23479991109,16cyclictest9931-21runrttasks10:28:060
23479991108,14cyclictest26281-21ntp_states09:25:250
23479991106,11cyclictest32488-21df_inode09:50:140
23479991098,14cyclictest180352sleep011:00:060
23479991097,13cyclictest24783-21latency_hist07:15:010
234799910917,15cyclictest25674-21seq11:30:000
23479991086,12cyclictest22769-21chrt09:11:010
234799910820,13cyclictest9393-21seq08:20:190
234799910710,16cyclictest31203-21df_inode09:45:130
2347999999,14cyclictest23540-21wc07:10:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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