Brion Vibber wrote:
Albert seems to be connected to the internal network on a 100Mbps link; the backup files are stored on yongle, and accessed over NFS through that link.
I'm full of crap; there are a bunch of misleading symlinks around. :)
Unfortunately, writes to the disk array on albert really do seem that fricking slow. We're probably going to have to move the uploads to another machine, or something. Sigh.
It seems great with smaller files, but as you get bigger I guess it can't cache it anymore and writes turn synchronous, turning performance to crap.
A series of tests with 'time dd if=/dev/zero of=bigfile bs=1M count=<size>':
size speed (MB) (MB/sec) 50: 151 200: 310 400: 152 800: 37 1024: 8.4
-- brion vibber (brion @ pobox.com)