Performance monitoring from the terminal.
Currently only XEN (as with xentop) is supported.
To be executed on every single node.
Make sure you have XEN up and running
xl info
xentop -b -i1 | head
Make sure all your guests have TMEM enabled.
Otherwise disable RAM from the graphs by setting showram=0 in the configuration.
Make sure you've got KSH93 available on your dom0 (floating point capable).
Get ready for sparkles. Note there's spark.bash as an alternative (untested).
wget https://git.zx2c4.com/spark/plain/spark.c
gcc -o spark spark.c -lm
cp -i spark /usr/local/bin/
CPU power, MAXMEM and NIC speed is evaluated dynamically. However DISK speed is tricky to determine (in sectors of 512 bytes per second). Some testing is advised to correctly define max values for disk performance.
domU
hdparm -t /dev/xvda1
dom0
cp nwr.conf /etc/
vi /etc/nwr.conf
We want to use system's memory instead of expansive disk i/o. Assuming /tmp/ is on tmpfs already
mount | grep tmpfs
otherwise
mkdir /tmp/fastio/
#mount -t tmpfs -o size=2G tmpfs /tmp/fastio/
vi /etc/fstab
tmpfs /tmp/fastio tmpfs nosuid,nodev,noexec,async,noatime,nodiratime,size=2097152k 0 0
mount /mnt/fastio/
Start the TUI
screen -S NWR
cd ~/nwr/
./nwr.ksh
and when finished
rm -rf /tmp/fastio/
#umount /tmp/fastio/
on some guest
CPU - https://pub.nethence.com/benchmarks/bench-cpu
RAM - https://pub.nethence.com/benchmarks/bench-ram
DISK I/O - https://pub.nethence.com/benchmarks/bench-io
TX/RX - https://pub.nethence.com/benchmarks/bench-nic
SIOCGMIIPHY on 'guestbr0' failed: Operation not supported
==> point to the underlying interface, not the bridge itself.