Hello,
I found an option while reading man mount_nfs:
"Use sysctl(8) or modify sysctl.conf(5) to adjust the vfs.nfs.iothreads value,
which is the number of kernel threads created to serve asynchronous NFS
I/O requests."
I tried to raise this value to a maximum of 20 and saw
a dece
To adjust the number of kernel nfsio threads
used to service asynchronous I/O requests on
an NFS _client_ machine.
Your diff seems to imply that this affects the _server_.
However, on the client, vfs.nfs.iothreads jumps to 4
as soon as I mount the NFS share. On the server
On Sat, Jan 05, 2013 at 10:17:49AM +0100, Jan Stary wrote:
vfs.nfs.iothreads is still mentioned (and commented out)
in the default /etc/sysctl.conf - should that go too?
not neccessarily. but the value should be changed, i think (or it should
be removed).
i've not
documented the fact
On Jan 05 14:35:40, j...@kerhand.co.uk wrote:
i hope the diff committed is clear about that:
NFS_NIOTHREADS
The number of I/O kernel threads for NFS clients.
Silly me, I was reading the old version.
Yes, this is clear of course.
used to service asynchronous I/O requests on
an NFS _client_ machine.
Your diff seems to imply that this affects the _server_.
However, on the client, vfs.nfs.iothreads jumps to 4
as soon as I mount the NFS share. On the server, it stays at -1.
On the client, when I start copying
On Fri, Dec 21, 2012 at 02:34:50PM +0100, Jan Stary wrote:
On 5.2/i386, man sysctl says
To adjust the number of kernel nfsio threads used to service asynchronous
I/O requests on an NFS client machine:
# sysctl vfs.nfs.iothreads=4
The default is 4; 20
vfs.nfs.iothreads=4
The default is 4; 20 is the maximum. See nfssvc(2) and nfsd(8) for
further discussion.
Does it still apply? The default now seems to be
# sysctl vfs.nfs.iothreads
vfs.nfs.iothreads=-1
which scales itself to 4 when I copy a file from
machine.
Your diff seems to imply that this affects the _server_.
However, on the client, vfs.nfs.iothreads jumps to 4
as soon as I mount the NFS share. On the server, it stays at -1.
On the client, when I start copying from the server, it stays at 4;
on the server it stays at -1. Same
On 5.2/i386, man sysctl says
To adjust the number of kernel nfsio threads used to service asynchronous
I/O requests on an NFS client machine:
# sysctl vfs.nfs.iothreads=4
The default is 4; 20 is the maximum. See nfssvc(2) and nfsd(8) for
further discussion.
Does
On Fri, Dec 21, 2012 at 02:34:50PM +0100, Jan Stary wrote:
On 5.2/i386, man sysctl says
To adjust the number of kernel nfsio threads used to service asynchronous
I/O requests on an NFS client machine:
# sysctl vfs.nfs.iothreads=4
The default is 4; 20
2012/12/21 Jason McIntyre j...@kerhand.co.uk:
i get -1 here too. but you;re saying that the value changes to 4 when
transferring, right?
I found this in /sys/nfs/nfs_vfsops.c:
if (nfs_niothreads 0) {
nfs_niothreads = 4;
nfs_getset_niothreads(1);
}
11 matches
Mail list logo
