I’ve been seeing problems recently with fragmented virtual address space. During the lifetime of a process, bits and pieces of memory are allocated throughout the 2GB 32-bit address space to such an extent that large contiguous blocks of free space are no longer available. If anything subsequently requires a large block of memory (like, for [...]
Tag Archives: perfmon
Finding the largest free block of address space
Posted in Software Development, WinDbg, Windows Also tagged address space, c++, private bytes, win32, WinDbg 2 Comments
Diagnosing out of memory errors with VMMap – Part 2
(I had problems with WordPress choking on this long post, so I’ve split it into 2 parts. The first part is here. This is the second part).
Programmatically checking memory usage
One of the things that’s useful in a pre-release check is do a regression test on the memory usage of your unmanaged functions. This should help to ensure that the fantastic new data structure you introduced doesn’t cost too much in additional storage for the order-of-magnitude performance improvement you were boasting about.
Like most of my posts, this assumes that [...]
