On 01/29/18 17:40, Terry Barnaby wrote:
Now I understand that NFS's latency with writes is a performance
bottleneck, but in
the past I have used the "async" mount option to good effect to minimise this.
It
does not appear to have any effect on my systems. The "async" mount option is
not
listed when you run "mount" to get a list of the mounts on the client.
Pardon the brevity of this response.
I see pretty much the same numbers as you're seeing. Sever and Client are both F27
and in my case both ends have SSD and the links are 1000Mb/s.
However, I'm not convinced the "issue" is related to write performance. The
reason I
say this is if do this on the client side
tar -zcf lin.tar f27k/linux-4.14.15/
meaning I'm reading from the server to create the tar. The numbers were nearly
identical. I think it may be more that the tar file has many (61337) files. Most of
them rather small.
FWIW, I also performed the tests using vers=3 of nfs with slightly better numbers on
average.
--
A motto of mine is: When in doubt, try it out