I know its bad form to reply to your own email but here is some more information re drive performance
root@observium:/opt/observium/rrd# hdparm -Tt /dev/mapper/observium--vg-root
/dev/mapper/observium--vg-root: Timing cached reads: 14428 MB in 2.00 seconds = 7218.63 MB/sec Timing buffered disk reads: 950 MB in 3.01 seconds = 315.94 MB/sec root@observium:/opt/observium/rrd# dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output 10240+0 records in 10240+0 records out 83886080 bytes (84 MB, 80 MiB) copied, 0.125735 s, 667 MB/s
On 24 Jul 2016, at 09:13, Lyndon Labuschagne lyndonl@mobiletorque.co.za wrote:
Hi All
I have moved from a VM server to a physical server. as the VM was taking a bit of a pounding, graph dropouts etc The physical server is a dual quad core Xeon, 2.66Ghz with 128GB of RAM and a 32GB ramdisk, and rrdcache I also have 2.5TB or SAS storage in a raid6 config Will all of this my average poller-wrapper time is around 60 to 70 seconds per device if I manually run an snmpwalk a single device takes around 6 seconds
I have also disabled the ramdisk, rrdcached etc and I am not seeing much of a difference either way
I have around 900 devices and the VM server was way faster, any idea where to start looking for a bottleneck?
Regards Lyndon _______________________________________________ observium mailing list observium@observium.org http://postman.memetic.org/cgi-bin/mailman/listinfo/observium