large malloc failures

[sysop HAL9K com]

We seem to be hitting a fragmentation issue where we go to malloc 380MB on a machine with 1000MB and 3000MB swap and then we get a NULL pointer return from malloc(). This is happening intermittently since we went to VC7. Any ideas on how to work around this? The process shows in PERFMON that it only owns 600MB at the time the 380MB allocation fails and 720 out of 1000MB are in use (72% systemwide). Thanks for any clues :confused:

[John R Shaw]

:confused:Why not use GlobalAlloc() in a test run last week I found a could allocate a buffer of 1.3 gig on a machine with 512K of ram, running Windows XP professional. Trust in the code Luke. Yea right!