tuning for maximum dhcp performance
Dan
dan at telcohero.com
Fri Apr 25 18:47:02 UTC 2008
My original post comments on the performance gains of a ramdrive, but I'd
be much more likely to just remove the per-lease fsync and keep it on the
generator-backed, ups-backed, battery-backed raid10 which gives me almost
the same performance, but without as much exposure:
80 clients/sec - raid10
420 clients/sec - raid10 no fsync
480 clients/sec - ramdisk
Rsycning a fairly large dhcpd.leases periodically leaves a lot of room for
lost information.
I would still prefer keeping the fsync, although I'd be curious to know
how many people are running systems without the fsync or on a ramdrive.
On Fri, 25 Apr 2008, Brian Raaen wrote:
> Dear Dan,
> As far as the filesystem goes, for the ultimate in performance you might want
> to mount /etc/dhcpd (or wherever your leases file is) to a partition in your
> RAM. Your could rsync this folder every few minutes/hours to back it up
> depending on your needs. That would keep you from being harddrive bound.
>
>
>
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