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Roman Zilka wrote: |
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> On Mon, Oct 16, 2006 at 11:26:23AM +0100, Joost Roeleveld wrote: |
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> |
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>>> it appears that there is one connection per folder |
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>>> and one process per connection... which seems (to me at least) to be overkill. |
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>>> |
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>> Having never used dovecot, I can't comment on this. But maybe this can be changed in a configuration file somewhere? |
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>> |
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> Confirm. There are a few settings regarding exactly this |
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> issue. Check out all the "login_process*" and "login_max*" options at least. |
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> |
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This sounded very promising... and I've now spent some time tweaking |
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those parameters (I'm not sure why I'd previously overlooked them.) |
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The parameter login_processes_count seems to control the number of |
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/usr/libexec/dovecot/imap-login processes that are run (when idle) |
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awaiting connections. The parameter login_max_processes_count appears |
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to relate to the same imap_login process. It was not the imap_login |
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processes which concern me from a scalability perspective - but rather |
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the imap (/usr/libexec/dovecot/imap) processes. I'm no longer so sure |
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about when imap processes are spawned or terminated - but there seem to |
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be a non-deterministic "lots" of them for each Thunderbird session. |
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