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From: Paul Hammant <paul@hammant.org>
Date: Mon, 17 Jul 2017 11:34:34 -0400
Message-ID: <CA+298UjANfx20nyLxNCcmaA7bZqzBf7na2L9YP3TuEwGZEgw0g@mail.gmail.com>
Subject: Re: LZ4 compression
To: Evgeny Kotkov <evgeny.kotkov@visualsvn.com>
Cc: Julian Foad <julianfoad@apache.org>, Evgeny Kotkov <kotkov@apache.org>,
	Svn dev <dev@subversion.apache.org>
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archived-at: Mon, 17 Jul 2017 15:34:40 -0000

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 Evgeny  wrote:

Speaking of only using it with compression level 1, that's not a starting
> point.  While LZ4 offers superior speeds, it is not a substitute for any
> zlib compression level > 1, including our current default of 5, as the
> latter gives better compression ratio.
>
> I was thinking that it might make sense to make the compression level 1
> our new default, so that new installations would benefit from the increased
> speed, while still keeping a decent compression ratio.  (If necessary, that
> could still be tweaked for better compression.)
>

What if the numerical series was stepped back from?  This new compression
scheme goes in as 'simple-lz4' rather than a number and others in the
future are named too?

-ph

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><div class=3D"gmail_quote">=
=C2=A0Evgeny =C2=A0wrote:</div><div class=3D"gmail_quote"><br><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;=
padding-left:1ex"><div>Speaking of only using it with compression level 1, =
that&#39;s not a starting point.=C2=A0 While LZ4 offers superior speeds, it=
 is not a substitute for any zlib compression level &gt; 1, including our c=
urrent default of 5, as the latter gives better compression ratio.</div><di=
v><br></div><div>I was thinking that it might make sense to make the compre=
ssion level 1 our new default, so that new installations would benefit from=
 the increased speed, while still keeping a decent compression ratio. =C2=
=A0(If necessary, that could still be tweaked for better compression.)</div=
></blockquote><div><br></div><div>What if the numerical series was stepped =
back from?=C2=A0 This new compression scheme goes in as &#39;simple-lz4&#39=
; rather than a number and others in the future are named too?</div><div><b=
r></div><div>-ph =C2=A0</div></div></div></div>

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