Problem with imp and Apache processes

[Richard Rogers]

Hi -

I have a problem with imp on Apache. This started with some older 
versions, but after upgrading everything (Apache, imp, horde and 
PHP), the problem still remains.

The setup now is:
  Apache 1.3.23
  imp 3.0
  php 4.1.1
  horde 2.0

all running on Compaq (Digital) Tru64 Unix v4.0G

The problem seems to be that some Apache imp requests are not 
"letting go" of the Apache process slot. The result is that after a 
while, Apache is left with no free process slots, and the Apache 
server-status report shows many imp-related requests in a "W" state.

With imp disabled, the server runs quite happily. 

I have tried decreasing the Apache MaxRequestsPerChild limit (to 2), 
in case of memory leaks, but this made no difference.

Can anyone offer any advice please? The main reason this problem has 
shown up has been a rapid increase of the use of imp, so now it's 
suddenly crucial to get it working properly! Under light usage it 
seems OK.

Thanks

Richard

-----------------------------------
Richard Rogers
Information Technology Services
Staffordshire University
Tel: 01785 (+44 1785) 353395
E-mail: R.M.Rogers@staffs.ac.uk
    ...Do you ever get the feeling that the
         story's too damned real and in the present tense?...