Re: [Valgrind-users] program degradation

[John R. <jr...@bi...>]

On 05/31/2012 07:10 PM, ÆëÓñ»ª wrote:
>  I try to use Valgrind to wrap some functions in target sotfwares such as php, libtiff. But i found that valgrind will slow down them significantly(up to 25 times slowwer), even if run valgrind with '--tool=none'. And as described in valgrind mannual, there should be 5 times slowwer than native
> running. I am confused, so anyone can help me to reduce the instrumentation-cost with some suggestions? I am waiting in hope for your advices. Thanks.

Please tell us the version of valgrind (the output of "valgrind --version"
when fed to a shell), which hardware (x86_64, i686, PowerPC 64-bit, ARMv7,
etc.), and which operating system and release (Ubuntu Linux 12.04, Android 4.1,
MacOS 10.8 Darwin, etc.)

How much slow-down do you observe for simple programs, such as
"valgrind --tool=none date", or 'ls', 'who', etc?

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