How many TCP connections are initiated by the Linux NFS client when using
TCP? Solaris, for example, seems to have a parameter called
"clnt_max_conns" that controls this. Is there anything similiar for Linux?
Does the number of TCP connections depend on the number of mounts?
--
Peter ?strand Chief Developer
Cendio http://www.thinlinc.com
Teknikringen 3 http://www.cendio.se
583 30 Link?ping Phone: +46-13-21 46 00
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for NFSv2 and NFSv3, one socket is opened per mount point.
for NFSv4, i think trond has made some kind of sharing arrangement, =
where mounts of exports on the same server get to share a socket.
we're thinking hard about allowing multiple sockets per mount point, or =
even multiple sockets per client-server pair. probably the break-even =
is having a socket per client CPU per client-server pair to maximize =
socket buffer availability and minimize lock contention while not =
chewing up too much of the port number space.
> -----Original Message-----
> From: Peter Astrand [mailto:[email protected]]=20
> Sent: Wednesday, May 12, 2004 4:12 PM
> To: [email protected]
> Subject: [NFS] clnt_max_conns ?
>=20
>=20
>=20
> How many TCP connections are initiated by the Linux NFS=20
> client when using=20
> TCP? Solaris, for example, seems to have a parameter called=20
> "clnt_max_conns" that controls this. Is there anything=20
> similiar for Linux?=20
> Does the number of TCP connections depend on the number of mounts?
>=20
>=20
> --=20
> Peter =C5strand Chief Developer
> Cendio http://www.thinlinc.com
> Teknikringen 3 http://www.cendio.se
> 583 30 Link=F6ping Phone: +46-13-21 46 00
>=20
>=20
>=20
>=20
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> This SF.Net email is sponsored by Sleepycat Software
> Learn developer strategies Cisco, Motorola, Ericsson & Lucent=20
> use to deliver
> higher performing products faster, at low TCO.
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> _______________________________________________
> NFS maillist - [email protected]
> https://lists.sourceforge.net/lists/listinfo/nfs
>=20
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On Wed, 2004-05-12 at 16:11, Peter Astrand wrote:
> How many TCP connections are initiated by the Linux NFS client when using
> TCP? Solaris, for example, seems to have a parameter called
> "clnt_max_conns" that controls this. Is there anything similiar for Linux?
> Does the number of TCP connections depend on the number of mounts?
1) 1 per mountpoint (except in the case of NFSv4 when it is 1 per
server).
2) Nope.
3) Yep. See (1).
Cheers,
Trond
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