Date: Fri, 24 Dec 2010 22:28:45 +0300
From: Goga777 <goga777@bk.ru>
To: linux-media@vger.kernel.org
Subject: Re: [PATCH] cx88-dvb.c: DVB net latency using Hauppauge HVR4000
Message-ID: <20101224222845.47edf47d@bk.ru>
In-Reply-To: <4D14325E.9000505@sfc.wide.ad.jp>
References: <4D14325E.9000505@sfc.wide.ad.jp>
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Sender: Mauro Carvalho Chehab <mchehab@gaivota>

will your patch useful for dvb sat tv ?

>      We are from School On Internet Asia (SOI Asia) project that uses satellite communication to deliver
> educational content. We used Hauppauge HVR 4000 to carry IP traffic over ULE. However, there is an issue
> with high latency jitter. My boss, Husni, identified the problem and provided a patch for this problem.
> We have tested this patch since kernel 2.6.30 on our partner sites and it hasn't cause any issue. The
> default buffer size of 32 TS frames on cx88 causes the high latency, so our deployment changes that to 6
> TS frames. This patch made the buffer size tunable, while keeping the default buffer size of 32 TS
> frames unchanged. Sorry, I have to use attachment for the patch. I couldn't figure out how to copy and
> paste the patch without converting the tab to spaces in thunderbird.