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2023-06-05 - 13:10

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 
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ARM Freescale i.MX535 @1000 MHz, Linux 4.19.142-rt63+ (Profile)

Latency plot of shadow in rack #4, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -h400 -i400 -q
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 Mon Jun 05, 2023 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
612922640,2sleep06131-21switchtime21:55:330
3265122010,3sleep032648-21grep23:40:020
978221300,4chrt9756-21mailstats00:15:380
1729921290,3chrt17300-21sh20:35:000
1249021260,5chrt12491-21missed_timers20:15:270
1437121250,4chrt14372-21latency_hist00:35:010
1366921170,3chrt13670-21/usr/sbin/munin20:20:190
2299621160,2sleep022995-21sendmail_mailst20:55:300
199062990,2sleep019909-21forks22:50:220
295452987,12sleep029250-21/usr/sbin/munin19:15:320
18062956,15sleep01821-21munin-run19:35:010
20672948,12sleep02071-21ntp_states21:40:260
135982897,10sleep013653-21ntpq22:25:260
264382840,3sleep026434-21cat21:10:010
10412836,65sleep01070-21users21:35:370
76012800,3sleep07600-21run-parts22:01:000
2781327921,32sleep027832-21munin-run19:10:020
23882750,2sleep02389-21mailstats19:35:320
179102694,54sleep00-21swapper20:35:320
27856996430,24cyclictest1882-21/usr/sbin/munin23:45:330
27856996328,26cyclictest32282-21/usr/sbin/munin19:25:310
58002620,2sleep05796-21ps00:00:320
91692610,2sleep09171-21idleruntime-cro00:15:000
27856996035,17cyclictest30669-21runrttasks21:25:310
27856996012,20cyclictest6739-21/usr/sbin/munin00:05:310
27856995919,13cyclictest3264-21/usr/sbin/munin19:40:210
27856995912,16cyclictest12188-21ntp_states00:25:290
2785699589,17cyclictest10797-21chrt00:20:230
2785699589,15cyclictest3066-21/usr/sbin/munin21:45:330
2785699589,14cyclictest10796-21/usr/sbin/munin22:15:390
2785699588,18cyclictest22288-21sendmail-msp23:00:000
2785699588,17cyclictest12067-21sshd20:14:320
27856995834,14cyclictest19288-21/usr/sbin/munin20:40:300
27856995811,15cyclictest26279-21/usr/sbin/munin23:15:410
2785699579,17cyclictest24001-21ntp_states23:05:330
2785699578,17cyclictest2854-21/usr/sbin/munin23:50:320
27856995734,15cyclictest29472-21runrttasks23:25:360
27856995733,16cyclictest7497-21/usr/sbin/munin19:55:300
27856995733,14cyclictest10026-21/usr/sbin/munin20:05:300
27856995731,15cyclictest4268-21/usr/sbin/munin23:55:210
27856995730,18cyclictest10362-21runrttasks22:12:370
27856995730,17cyclictest9545-21runrttasks20:04:520
27856995730,15cyclictest21661-21/usr/sbin/munin20:50:310
27856995718,12cyclictest31648-21cpu21:30:160
27856995718,12cyclictest18548-21/usr/sbin/munin22:45:330
2785699569,14cyclictest30566-21/usr/sbin/munin19:20:230
2785699568,18cyclictest23976-21/usr/sbin/munin21:00:170
2785699567,14cyclictest28223-21ntpq19:10:240
27856995632,14cyclictest15589-21runrttasks22:33:100
27856995631,16cyclictest25440-21/usr/sbin/munin23:10:380
27856995631,15cyclictest6175-21/usr/sbin/munin19:50:320
27856995629,15cyclictest29137-21/usr/sbin/munin21:20:200
27856995629,15cyclictest14916-21/usr/sbin/munin20:25:150
27856995610,20cyclictest28069-21seq21:15:300
2785699558,16cyclictest4560-21grep21:50:240
2785699558,16cyclictest15959-21/usr/sbin/munin22:35:220
2785699558,14cyclictest14537-21/usr/sbin/munin00:35:210
2785699558,13cyclictest30155-21/usr/sbin/munin23:30:260
27856995533,15cyclictest4600-21/usr/sbin/munin19:45:200
27856995531,16cyclictest9023-21runrttasks22:07:100
27856995510,17cyclictest18256-21seq22:43:480
2785699547,15cyclictest20027-21/usr/sbin/munin20:45:350
2785699547,15cyclictest12231-21if_eth022:20:230
27856995432,14cyclictest28200-21/usr/sbin/munin23:20:350
27856995431,15cyclictest26722-21/usr/sbin/munin21:10:240
27856995424,23cyclictest0-21swapper23:00:130
27856995327,15cyclictest514-21/usr/sbin/munin23:40:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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