I used IPC::shareable module to construct a nested HASH table in shared memory. It worked fine during "on-demand" test. When I move from "on-demand" to "preload", An error came up saying that "No space left on device". The machine has 0.5GB menory and most is still available. Each entry in the Hash table is less than 1K. The logfile I printed out during Httpd start indicates that each time, this error shows up when the 128th entry is constructed. So I wonder whether there is any limitation on Shared Hash table and whether there is a way around this problem. Right now, each buffer_size is set to SHMMAX (32M). total 4096 seg is allowed. Another quick question is that whether there is a way to get info on how many share memory segments has been allocated and how many physical memory still available? Any suggestion is appreciated! -Martin
