-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Wednesday 2008-06-18 at 14:45 -0400, Greg Freemyer wrote:
On Wed, Jun 18, 2008 at 1:49 PM, Hans Witvliet <> wrote:
On Wed, 2008-06-18 at 06:11 -0400, Matt Archer wrote:
Ethernet is pitifully slow compared to the disk I/O of any modern computer.
This is why, despite the claims of Dell and others, file-servers can EASILY be bottom-of-the-barrel machines, and buying a top-end motherboard and CPU for that purpose is just plain wasteful and stupid.
Most sata's i come across are 60MB/s some 80MB/s, With raid-5 i've seen 100MB/s Still not enough to saturate a single GB eth-channel, let alone a number of bonded interface. Real fast scsi-drives are just some gigs..
(Or do you still use thinwire, 10B2, without proper line-terminators ;-)
I know a bit about this. For small files (1 MB or less) and a heavy i/o load your limiting factor is the drives and their slow seek times. (i.e. not the CPU, nor PCI-bus, nor Ethernet,)
So spend your money on Raid setups and more drives if you want to run faster. ie. basically the more spindles you have, the more i/o you can do.
If you have bigger files (1GB +) that you are working with, then 3 or 4 drives in a raid array may saturate what the MB / ethernet can handle. With older machines the PCI bus becomes the throttle. Just too slow.
I have not tested with modern machines and all the i/o running on PCIexpress cards. I'm not sure where the bottleneck is there for a fileserver serving large files
We are going a bit off-track here :-) The point that was risen was that, for an internet FTP/HTTP server serving hundreds of clients and thousands of files (ie, a suse plus many other distros mirror), a point to consider is how many isos (ie, very large files) you are serving, because you can not hope to have on cache all of those images and files for all simultaneous clients. The hit ratio becomes very low. So they prefer the less isos, the better. You could search the archive and find out what one of those sysops said about all of this about one or two years ago. - -- Cheers, Carlos E. R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4-svn0 (GNU/Linux) iD8DBQFIWVyqtTMYHG2NR9URAkV/AJ4l2dDRCwDTM1uLTClNhMoEaQDVMQCdG6Y8 muwhJfYoCGX+w9sWrVRonrc= =Y1fL -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org