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From "Alexei Fedotov" <alexei.fedo...@gmail.com>
Subject Re: [classlib][archive] zlib performance (was: Re: [classlib][archive] +3.25% on Eclipse startup after a bit of cleaning)
Date Thu, 13 Mar 2008 17:53:59 GMT
Thanks, Mark!

On Thu, Mar 13, 2008 at 6:30 PM, Mark Hindess
<mark.hindess@googlemail.com> wrote:
>
>  I've not tried it but I suspect that refactoring the code to use
>  inflateBack (rather than inflate) might also give a significant speedup.
>
>  -Mark.
>
>
>
>  On 12 March 2008 at 13:33, Mark Hindess <mark.hindess@googlemail.com> wrote:
>  >
>  > Alexei,
>  >
>  > Your message reminded me that I had noticed that my debian packages
>  > for M5 - which use -Dhy.local.zlib=true - have better performance for
>  > inflate/deflate than the M5 releases.  Given that we are unlikely to
>  > need to debug into the zlib code, perhaps we should *always* compile the
>  > zlib code with optimizations.  After all it isn't really "our" code, we
>  > are unlikely to change it and it hasn't changed since 2005.
>  >
>  > Debian compile with -O3 and with -DUNALIGNED_OK (on x86 and x86_64) and
>  > my tests with minigzip show that these are reasonable choices.
>  >
>  > I would expect that this would improve eclipse startup performance.
>  >
>  > -Mark.
>  >
>  >
>  > On 6 March 2008 at 0:31, "Alexei Fedotov" <alexei.fedotov@gmail.com> wrote:
>  > > Dear committer,
>  > > I've finally got some justification that my patches for HARMONY-4569
>  > > are worthy to be committed, see subj. Could you please take a look?
>  > > Thank you in advance.
>  > >
>  > > BTW1. Volunteers are welcome to fix TODO comments cleaning the code
>  > > and probably getting even more speed up.
>  > >
>  > > BTW2. I just have got another idea: implementing Utf8StringHashMap
>  > > collection which would save space by storing a lot of English strings
>  > > in Utf8 byte arrays and encode/decode them during rare access
>  > > operations.
>  > >
>  > > On Wed, Feb 13, 2008 at 8:01 PM, Alexei Fedotov
>  > > <alexei.fedotov@gmail.com> wrote:
>  > > > Hello folks,
>  > > >
>  > > >  Do we have original
>  > > >  working_classlib/modules/archive/src/main/java/java/util/jar/ module
>  > > >  contributors on board? Could anyone clarify the reasons behind heavy
>  > > >  solution to copy manifest chunks into a separate hash table descried
>  > > >  at HARMONY-4569? Aren't entity hash table the only object which should
>  > > >  be populated?
>  > > >
>  > > >  --
>  > > >  With best regards,
>  > > >  Alexei
>  > > >
>  > > >  [1] http://issues.apache.org/jira/browse/HARMONY-4569
>  > > >
>  > >
>  > >
>  > >
>  > > --
>  > > With best regards,
>  > > Alexei
>  > >
>  >
>
>
>



-- 
With best regards,
Alexei

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