Re: Slow XFS write
- Date: Wed, 22 Aug 2018 16:02:42 +0200
- From: Martin LEUSCH <sce.tech@xxxxxxxxxx>
- Subject: Re: Slow XFS write
Le 22/08/2018 à 15:17, Michael Stone a écrit :
On Wed, Aug 22, 2018 at 02:25:51PM +0200, Martin LEUSCH wrote:
I tested write speed with dd command like "dd if=/dev/zero
testfile bs=1G count=1 oflag=direct".
The 10 MB/s for the data partition also correspond to the behavior I
real situation, when I copy a big file on NFS, 12GB are copied
hang for 15 or 20 minutes. When I copy big file with scp, It copy
at the beginning then decrease to 10 MB/s till the end.
what happens with
dd if=/dev/zero of=/var/srv/nfs/testfile bs=64k count=16k conv=fsync
And this is direct on the server, not via NFS, right?
I've got same result as previous test.
tests with dd command are executed directly on the server.