Integrated: 8316581: Improve performance of Symbol::print_value_on()

[Thomas Schatzl]

On Wed, 20 Sep 2023 09:34:05 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this (hopefully correct) optimization of `Symbol::print_value_on()`; investigation into class unloading time distribution showed that a lot of time is spent in the `UnloadingEventLog::log()` call (25+%, see CR).
> 
> The reason seems to be the use of `outputStream::print()` without any need for formatting.
> 
> This seems to decrease time spent in this logging by almost 10x.
> 
> Testing: hs_err output seems still be the same, GHA
> 
> Thanks,
>   Thomas

This pull request has now been integrated.

Changeset: 90bcdbd1
Author:    Thomas Schatzl <tschatzl at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/90bcdbd15fe7211377f6f6812a2b562c17995d65
Stats:     6 lines in 1 file changed: 0 ins; 3 del; 3 mod

8316581: Improve performance of Symbol::print_value_on()

Reviewed-by: shade, coleenp, dholmes

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PR: https://git.openjdk.org/jdk/pull/15838