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Posted to commits@harmony.apache.org by "Aleksey Shipilev (JIRA)" <ji...@apache.org> on 2008/07/12 15:57:32 UTC

[jira] Created: (HARMONY-5910) [classlib][pack200][performance] BHSDCodec.decode() optimization

[classlib][pack200][performance] BHSDCodec.decode() optimization
----------------------------------------------------------------

                 Key: HARMONY-5910
                 URL: https://issues.apache.org/jira/browse/HARMONY-5910
             Project: Harmony
          Issue Type: Improvement
          Components: Classlib
         Environment: Latest pack200
            Reporter: Aleksey Shipilev


Optimization of o.a.h.pack200.BHSDCodec.decode(...).

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[jira] Closed: (HARMONY-5910) [classlib][pack200][performance] BHSDCodec.decode() optimization

Posted by "Aleksey Shipilev (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HARMONY-5910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aleksey Shipilev closed HARMONY-5910.
-------------------------------------


Thanks, Sian.

> [classlib][pack200][performance] BHSDCodec.decode() optimization
> ----------------------------------------------------------------
>
>                 Key: HARMONY-5910
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5910
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>         Environment: Latest pack200
>            Reporter: Aleksey Shipilev
>            Assignee: Sian January
>             Fix For: 5.0M7
>
>         Attachments: pack200-bhsdcodec-v1.patch
>
>
> Optimization of o.a.h.pack200.BHSDCodec.decode(...).

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[jira] Updated: (HARMONY-5910) [classlib][pack200][performance] BHSDCodec.decode() optimization

Posted by "Aleksey Shipilev (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HARMONY-5910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aleksey Shipilev updated HARMONY-5910:
--------------------------------------

    Attachment: pack200-bhsdcodec-v1.patch

pack200-bhsdcodec-v1.patch
 - precomputes the powers of radix
 - inlines isHigh()
 - moves the check for EOF from the cycle
 - reorders operands in exit condition and uses partial boolean evaluation

Gives +4% to unpacking scenario (1.2 secs from 35.5 total).

> [classlib][pack200][performance] BHSDCodec.decode() optimization
> ----------------------------------------------------------------
>
>                 Key: HARMONY-5910
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5910
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>         Environment: Latest pack200
>            Reporter: Aleksey Shipilev
>         Attachments: pack200-bhsdcodec-v1.patch
>
>
> Optimization of o.a.h.pack200.BHSDCodec.decode(...).

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[jira] Assigned: (HARMONY-5910) [classlib][pack200][performance] BHSDCodec.decode() optimization

Posted by "Sian January (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HARMONY-5910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sian January reassigned HARMONY-5910:
-------------------------------------

    Assignee: Sian January

> [classlib][pack200][performance] BHSDCodec.decode() optimization
> ----------------------------------------------------------------
>
>                 Key: HARMONY-5910
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5910
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>         Environment: Latest pack200
>            Reporter: Aleksey Shipilev
>            Assignee: Sian January
>         Attachments: pack200-bhsdcodec-v1.patch
>
>
> Optimization of o.a.h.pack200.BHSDCodec.decode(...).

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[jira] Resolved: (HARMONY-5910) [classlib][pack200][performance] BHSDCodec.decode() optimization

Posted by "Sian January (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HARMONY-5910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sian January resolved HARMONY-5910.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 5.0M7

Applied patch at r676545 (with some trailing spaces removed).  Please check that it was applied as you expected.

> [classlib][pack200][performance] BHSDCodec.decode() optimization
> ----------------------------------------------------------------
>
>                 Key: HARMONY-5910
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5910
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>         Environment: Latest pack200
>            Reporter: Aleksey Shipilev
>            Assignee: Sian January
>             Fix For: 5.0M7
>
>         Attachments: pack200-bhsdcodec-v1.patch
>
>
> Optimization of o.a.h.pack200.BHSDCodec.decode(...).

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