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2022-10-07 - 18:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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.MX6UL @528 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50500000 -m -n -a0 -t1 -p99 -i396 -h400 -q
Total number of samples: 50.5 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack5slot7s.osadl.org (updated Fri Oct 07, 2022 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30308224502207,98sleep00-21swapper07:08:400
305029916510,128cyclictest14680-21apt-get08:50:200
305029916015,104cyclictest23153-21apt-get09:40:180
305029915911,123cyclictest12299-21awk11:51:090
305029915813,119cyclictest3633-21apt-get11:00:360
30502991579,28cyclictest11640-21ls11:46:140
305029915737,23cyclictest25816-21missed_timers09:55:570
305029915722,27cyclictest6019-21memory07:55:530
305029915716,109cyclictest8646-21sshd11:30:210
305029915713,118cyclictest9592-21wc08:16:120
305029915713,118cyclictest18948-21sshd09:15:210
305029915618,26cyclictest26487-21df10:00:400
305029915614,117cyclictest32207-21sendmail_mailtr07:16:250
305029915611,121cyclictest30718-21/usr/sbin/munin07:10:430
305029915610,24cyclictest16595-21apt-get12:22:040
305029915541,92cyclictest12281-21/usr/sbin/munin08:35:300
305029915518,23cyclictest18781-21apt-get09:15:080
305029915515,115cyclictest14548-21apt-get08:50:080
305029915512,118cyclictest13360-21sh12:00:010
305029915511,120cyclictest11608-21uname08:30:520
305029915430,102cyclictest0-21swapper11:15:060
305029915414,24cyclictest7045-21apt-get11:20:260
305029915413,32cyclictest19336-21apt-config12:35:140
305029915319,109cyclictest24757-21apt-get09:50:230
305029915314,25cyclictest6600-21/usr/sbin/munin08:00:490
305029915313,114cyclictest10804-21/usr/sbin/munin08:25:460
305029915311,37cyclictest635-21sort10:40:580
305029915311,119cyclictest22630-21awk09:36:040
305029915311,103cyclictest31770-21cat10:31:160
305029915310,119cyclictest17186-21munin-run09:05:010
305029915310,117cyclictest24666-21grep09:50:030
305029915234,21cyclictest18347-21grep12:26:250
305029915219,28cyclictest17464-21irqstats09:05:490
305029915214,21cyclictest5720-21latency_hist07:55:050
305029915213,97cyclictest6205-21/usr/sbin/munin11:16:220
305029915213,115cyclictest16075-21ps08:56:110
305029915213,114cyclictest28773-21apt-get10:15:220
305029915115,22cyclictest3264-21munin-run07:40:030
305029915114,111cyclictest29602-21/usr/sbin/munin10:21:120
305029915112,38cyclictest3479-21apt-get11:00:060
305029915016,37cyclictest15784-21munin-run12:15:030
305029915013,24cyclictest32719-21df_inode07:20:370
305029915011,116cyclictest10508-21sshd08:21:500
30502991499,118cyclictest1620-21awk10:46:120
305029914935,95cyclictest3945-21timerandwakeup07:41:100
305029914918,106cyclictest1981-21apt-get10:50:270
305029914917,28cyclictest32009-21apt-get10:35:250
305029914914,25cyclictest4682-21wc11:05:420
305029914914,106cyclictest13482-21/usr/sbin/munin12:00:350
305029914914,105cyclictest4424-21/usr/sbin/munin07:45:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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