cvs commit: src/lib/libc/stdlib malloc.c
scottl at samsco.org
Thu Jan 26 19:36:21 PST 2006
Jason Evans wrote:
> On Jan 26, 2006, at 6:51 PM, Andrey Chernov wrote:
>> I worry about my system performance. Could you please make all
>> and debug code conditional, debending on some flags which could be
>> set as
>> malloc options? Even in case this is a test period now, some people
>> perhaps don't want some tests. It is much easy to turn some tests off
>> malloc options than to comment out manually corresponding malloc.c
>> after each cvsup.
> Unfortunately, run-time checks for the debugging features are
> expensive, since the debugging code is scattered throughout malloc.c.
> This pretty much mandates compile-time configuration, for performance
> I can disable statistics and debugging, if there's a general consensus
> to do so. How much performance difference is the debug/ stats code
> making for you? I've only been disabling debug/stats for benchmarking
> purposes, so I don't have a good feel for how much it impacts overall
> system performance.
I think that it's all just fine the way it is. If you can refactor
things so that it's convenient and non-intrusive to make the debugging
controllable at runtime, that's great, but it's not something to loose
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