On 28/01/18 14:38, Steven Whitehouse wrote:
Hi,
On 28/01/18 07:48, Terry Barnaby wrote:
When doing a tar -xzf ... of a big source tar on an NFSv4 file system
the time taken is huge. I am seeing an overall data rate of about 1
MByte per second across the network interface. If I copy a single
large file I see a network data rate of about 110 MBytes/sec which is
about the limit of the Gigabit Ethernet interface I am using.
Now, in the past I have used the NFS "async" mount option to help
with write speed (lots of small files in the case of an untar of a
set of source files).
However, this does not seem to speed this up in Fedora27 and also I
don't see the "async" option listed when I run the "mount" command.
When I use the "sync" option it does show up in the "mount" list.
The question is, is the "async" option actually working with NFS v4
in Fedora27 ?
_______________________________________________
What server is in use? Is that Linux too? Also, is this v4.0 or v4.1?
I've copied in some of the NFS team who should be able to assist,
Steve.
Thanks for the reply.
Server is a Fedora27 as well. vers=4.2 the default. Same issue at other
sites with Fedora27.
Server export: "/data *.kingnet(rw,async,fsid=17)"
Client fstab: "king.kingnet:/data /data nfs async,nocto 0 0"
Client mount: "king.kingnet:/data on /data type nfs4
(rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,nocto,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.168.202.2,local_lock=none,addr=192.168.202.1)"
_______________________________________________
devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
