On 12/14/06, Johannes Schindelin <Johannes.Schindelin@xxxxxx> wrote:
> > If Git is compiled with NO_FAST_WORKING_DIRECTORY set then we will > > avoid looking at the working directory when the blob in question > > is available within a packfile and the caller doesn't need the data > > unpacked into a temporary file. > > Why can't it be useful in generic code? What are the downsides? It is usually cheaper to just read the file, especially if it is still cached, because the alternative means unpacking the loose object, or worse, unpacking the packed object _along_ with the objects in its delta chain.
But you have to read less, and even that could be in cache as well and unpacking in userspace could be faster than open/write temporary/ read temporary/close/unlink temporary file on a normal system
Not every OS sucks cache-wise, and you should not make others suffer for Redmond's shortcomings.
I'm just do not understand why avoiding temporary file wouldn't help all OSes, even if they do not suck cache-wise. - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html