* Re: Request for Redhat
[not found] <4E450C8F.4030009@ctc-g.co.jp>
@ 2011-08-12 16:18 ` Chris Wright
0 siblings, 0 replies; only message in thread
From: Chris Wright @ 2011-08-12 16:18 UTC (permalink / raw)
To: Jun.Kondo
Cc: linux-kernel, omega-g1, notsuki, Kozaki, Motokazu, Hajime Taira, netdev
Hi Jun,
* Jun.Kondo (jun.kondo@ctc-g.co.jp) wrote:
> CTC had the following demand;
>
> 1. to ensure high throughput from the beginning of
> tcp connection at normal times by acquiring large
> default transmission buffer value
>
> 2. to limit the block time of the write in order to
> prevent the timeout of upper layer applications
> even when the connection has low throughput, such
> as low rate streaming
Make sure you include network developers (netdev@vger.kernel.org Cc'd)
on networking related patches.
You'll find some helpful information regarding the email format for
submitting patches here:
http://www.kernel.org/doc/Documentation/SubmittingPatches
Improving your Subject: and fixing the patch level for your diff come
to mind immediately.
> --- sock.h 2011-04-14 14:58:03.000000000 +0900
> +++ sock.h.mod 2011-04-21 15:30:07.000000000 +0900
> @@ -434,9 +434,12 @@
> /*
> * Compute minimal free write space needed to queue new packets.
> */
> +
> +extern int sysctl_tcp_lowat;
> +
> static inline int sk_stream_min_wspace(struct sock *sk)
> {
> - return sk->sk_wmem_queued / 2;
> + return sk->sk_wmem_queued >> sysctl_tcp_lowat;
> }
Also, this patch appears to be against an old tree (I assume the RHEL
5 tree). To be considered upstream, you need to generate a diff against
the upstream tree. And considering all that's changed since 2.6.18, it
would be useful to verify you still have the issue in a current upstream
Linux tree.
Alternatively, you may consider using Red Hat's Bugzilla to contact RH
engineers for help and guidance.
Good luck.
thanks,
-chris
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2011-08-12 16:18 ` Request for Redhat Chris Wright
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