[linux-cifs-client] CIFS slow on gigabit, doesn't support sockopt=TCP_NODELAY ?

Jeff Layton jlayton at redhat.com
Mon Aug 24 10:29:23 MDT 2009


On Mon, 24 Aug 2009 16:02:48 +0200
Volker Lendecke <Volker.Lendecke at SerNet.DE> wrote:

> On Mon, Aug 24, 2009 at 09:50:20AM -0400, Jeff Layton wrote:
> > Yeah. The sockopt= option is completely ignored. I proposed a patch
> > to remove it not too long ago...
> > 
> > I'm unclear...so you're saying here that turning on TCP_NODELAY on the
> > server it helps throughput when using the Linux CIFS client?
> > 
> > It seems to be that there are probably bottlenecks you'll hit sooner
> > before Nagle's algorithm becomes an issue (lack of parallelism in
> > writes for one thing), but it may be worth experimenting with that flag
> > if you've seen a measurable throughput increase.
> 
> While there... Any updates on the parallel reads and writes
> we discussed a couple of months ago?
> 

Not from me. Would still definitely be a nice-to-have.

-- 
Jeff Layton <jlayton at redhat.com>


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