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From: Jonathan Morton <chromatix99@gmail.com>
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To: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
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Subject: Re: [Bloat] using tcp_notsent_lowat in various apps?
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> On 16 Jun, 2015, at 19:18, Steinar H. Gunderson =
<sgunderson@bigfoot.com> wrote:
>=20
> On Tue, Jun 16, 2015 at 09:11:08AM -0700, Dave Taht wrote:
>> I just tossed off a quick patch for rsync, not that I have a clue as
>> to whether it would make any difference there.
>=20
> For bulk applications (like rsync), how would this make sense at all?
> I thought the entire point of this option was if you knew what data to =
send
> now, but that you might want to change your mind later if it takes =
some time
> to send it. The latter doesn't apply to rsync.

Actually, it does.  Rsync is designed to be used to update an existing =
set of files, so the protocol interleaves control and data information =
asynchronously.

More generally, I think it=E2=80=99s worth setting LOWAT on *any* =
application that uses select() or poll() with a readable and writable =
socket population simultaneously.

- Jonathan Morton