Rob Siemborski wrote: [skiplist]
No, it doesn't have a specific in-core cache, it relies on the filesystem cache alone (it mmap()s the db file and uses that directly).
Can you tell offhand if it does any of the mmap() stuff that's a no-no on HP-UX platform (eg. same process mapping two overlapping areas, or accessing the files directly while something is mmapped)?
I had to stay with Berkeley on HP-UX since skiplist became unusably slow with map_nommap. Curiously, at first it seemed to run just great, but deleting an entire user took ages. I was just thinking if it was worthwhile to try making skiplist code use the real mmap() and have the rest of Cyrus still using map_nommap, since I know that part not to work otherwise. --mika
