You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-03-27 - 11:56

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  

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 20 highest latencies:
System rack5slot7s.osadl.org (updated Mon Mar 27, 2023 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14040224492205,98sleep00-21swapper19:07:290
143739916314,122cyclictest28816-21/usr/sbin/munin20:55:440
143739916216,120cyclictest21333-21apt-get23:30:330
143739916115,121cyclictest15186-21munin-node19:15:140
143739916017,119cyclictest18783-21munin-run23:15:010
143739916015,25cyclictest32748-21apt-get21:21:460
143739916012,122cyclictest7894-21apt-get22:12:020
143739915828,18cyclictest0-21swapper00:20:570
143739915816,24cyclictest14558-21munin-run22:50:020
143739915814,119cyclictest17753-21systemctl19:40:020
143739915741,94cyclictest27395-21/usr/sbin/munin20:45:460
143739915726,28cyclictest22400-21memory20:15:520
143739915722,28cyclictest23899-21diskstats20:25:430
143739915625,30cyclictest31236-21/usr/sbin/munin21:11:200
143739915618,29cyclictest17464-21irqstats23:05:510
143739915613,117cyclictest7809-21grep22:06:140
14373991559,25cyclictest24485-21apt-get20:32:010
143739915541,93cyclictest28219-21missed_timers00:10:550
143739915517,24cyclictest4086-21diskstats21:45:440
143739915516,24cyclictest7057-21users22:01:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional