On Sat, Jul 15, 2000 at 02:52:42PM +0530, kapil sharma wrote:
> 50,000 users on this server currently. There is heavy load on the sun
> system. Now, I want following information:
processor load or I/O load?
> 1: Will I be able to mount the ext2 partition on Sun system thriugh NFS?
Yes.
> 2: Will the NFS partition will work in this kind of heavy load?
It depends. You need to provide far more input to decide that (and
even then there is no absolute answer to that kind of question).
Are both machines on the same ethernet? Is the ethernet switched or
not, 10 or 100mbit, is that ethernet shared with other servers?
How many mails, of which size?
And if the ethernet load is near the point of saturation anyway
(this can happen if the 50000 users are doing a lot of large
email) then don't even think about NFS.
> 3: Is there any performance issue in ths
Yes. NFS isn't a high performance file system, and local hard disk
I/O tends to be much cheaper than network I/O, especially in terms
of latency (don't underestimate that: it means processes on the
sun will run longer due to NFS, and will need more memory, which
might lead to swapping).
NFS also tends to work better between SUN and SUN.
Estimate your network load: take the load of the sparc ethernet
interface today and multiply with 2.25 to get the minimum (!) network
load after you switch to NFS. Still okay? Then it might work.
Regards, Uwe
