Re: [Valgrind-users] Valgrind malloc problem

[Colin M. <col...@pi...>]

tom fogal wrote:
> Pat...@no... writes:
>   
>>   I am using valgrind 3.4.1 to try to find a memory leak. My
>> program has an initial routine which allocates a lot of memory -
>> around 1 GB. When I run the program by itself it runs fine, however
>> when I run it under valgrind, one of the many malloc calls in
>> the initial routine fails.
>>
>> Does anyone know why this would happen? There is plenty of memory
>> on the machine (64 GB).
>>     
>
>   
How much is valgrind's over heads?
IIRC, it's a little over 1.125 bytes per byte allocated by the program.

Could it be they exceed the system's free memory?
Is there anything logged to syslog about this.

Col.