Re: [exim] Setting for extra exim processes

On 23 April 2010 08:34, Mark Thornton <mthornton@???> wrote:
> On 23/04/2010 08:08, Peter Bowyer wrote:
>> On 22 April 2010 23:30, Marc Perkel<marc@???>  wrote:
>>
>>> I'm sure it's in the docs somewhere but I can't find it. What is the
>>> setting to allocate extra exim processes to listed for incoming
>>> connections. I'm looking to allocate spare processes to increase
>>> performance.
>>>
>>> Thanks in advance
>>>
>> There isn't one - Exim has one listener that forks a new process for
>> each connection. SMTP doesn't have the real-time demands that (eg)
>> HTTP has, so doesn't need the kind of architecture that an HTTP server
>> has.
>>
>> Peter
>>
>>
>>
>
> Clients MUA deliver mail using SMTP and incur a delay, sometimes with an
> irritating dialog box, if the SMTP server is slow.

Indeed, but the tolerable delay is at least an order of magnitude
greater than for an HTTP request. And there's exactly one connection
per batch of emails sent, compared with potentially many per web page
request. The engineering problem is completely different.

Peter
--
Peter Bowyer
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