[Valgrind-users] 回复： 回复： helgrind use more than 32G memory.

[王阳 <412...@qq...>]

Hi.


I download the latest version 3.10.1,but helgrind use memory over 64G and got a error from valgrind because of over the momory limit.


I used the option --stats=yes, I noticed that valgrind print message below endless util to use 64G memory. 


--28682-- univ_laog_do_GC enter cardinality 9614
--28682-- univ_laog_do_GC exit seen 6591 next gc at cardinality 9615


why?
DRD have not that problem ,but DRD 's message is not accurate comparing with helgrind. 


------------------ 原始邮件 ------------------
发件人: "我自己的邮箱";<412...@qq...>;
发送时间: 2015年6月11日(星期四) 上午9:20
收件人: "Philippe Waroquiers"<phi...@sk...>; 
抄送: "valgrind-users"<val...@li...>; 
主题: [Valgrind-users] 回复：  helgrind use more than 32G memory.



Hi.


Thank you for your reply.
Verison is 3.6.0,very old one,I will try version 3.10.1 and svn version,and also try two options you said.




------------------ 原始邮件 ------------------
发件人: "Philippe Waroquiers";<phi...@sk...>;
发送时间: 2015年6月11日(星期四) 凌晨3:42
收件人: "王阳"<412...@qq...>; 
抄送: "valgrind-users"<val...@li...>; 
主题: Re: [Valgrind-users] helgrind use more than 32G memory.



On Wed, 2015-06-10 at 19:17 +0800, 王阳 wrote:
> My answer is that helgrind really need more than 6 times or even more
> memory than before ,is that true?
> or helgrind have a bug?
The memory needed by helgrind might depend on what your program does.
Typically, it needs twice the original, but it might be a lot more.

Which version of Valgrind are you using ?
In the SVN version, some memory improvements have been done.

The best is to get the latest SVN version, compile it,
then run with --stats=yes.

That will give some indications where the memory is taken.
More detailed information can also be obtained by using
 --profile-heap=yes

Philippe