Re: [ANNOUNCE 0/6] Open-iSCSI High-Performance Initiator for Linux

From: Matt Mackall
Date: Wed Mar 09 2005 - 01:09:33 EST

On Tue, Mar 08, 2005 at 09:51:39PM -0800, Alex Aizman wrote:
> Matt Mackall wrote:
> >How big is the userspace client?
> >
> Hmm.. x86 executable? source?
> Anyway, there's about 12,000 lines of user space code, and growing. In
> the kernel we have approx. 3,300 lines.
> >>- 450MB/sec Read on a single connection (2-way 2.4Ghz Opteron, 64KB block
> >>size);
> >
> >With what network hardware and drives, please?
> >
> Neterion's 10GbE adapters. RAM disk on the target side.


Snipped my question about userspace deadlocks - that was the important
one. It is in fact why the sfnet one is written as it is - it
originally had a userspace component and turned out to be easy to
deadlock under load because of it.

Mathematics is the supreme nostalgia of our time.
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