[PVE-User] CEPH - benchmark
lord_Niedzwiedz
sir_Misiek1 at o2.pl
Tue Sep 19 12:28:33 CEST 2023
I have non heterogenic network and hardware.
CEPH about Write 1160MB/sec, Read 1820 MB/sec
One nvme drive started going crazy.
The performance of the entire array dropped catastrophically.
The system said nothing.
I wonder if there is any mechanism in CEPH/Proxmox that informs us about
this automatically ??
I quickly wrote a script that periodically checks performance.
root at tjall1:~# cat /Backup/script/Ceph.sh
#!/bin/sh
# Ceph test by sir_Misiek at o2.pl
# Grzegorz Mi$kiewicz
# 19.09.2023
MINWRITE=600
MINREAD=1200
POOL1=ceph-lxc
POOL2=ceph-vm
WRITE=`rados bench -p $POOL1 120 write --no-cleanup | grep "Bandwidth "|
awk '{ print $3}'`
READ=`rados bench -p $POOL1 60 rand| grep "Bandwidth "| awk '{ print $3}'`
echo Write = $WRITE
echo READ = $READ
# We cut out everything before the dot. Converts a floating point value
to an integer.
WRITE_INT=${WRITE%%.*}
READ_INT=${READ%%.*}
if [ ${MINWRITE} -ge "${WRITE_INT}" ]; then
echo "Ceph slow write on pool($POOL1): ${WRITE} MB/sec"
fi
if [ ${MINREAD} -ge "${READ_INT}" ]; then
echo "Ceph slow read on pool($POOL1): ${WRITE} MB/sec"
fi
rados -p $POOL1 cleanup > /dev/null
rados -p $POOL1 cleanup; sync; rados -p $POOL2 cleanup; sync
exit
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