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List:       postfix-users
Subject:    Re: postfix milter body chunk length
From:       Matthias Schneider <matthias.schneider () rmail ! de>
Date:       2019-08-19 8:54:49
Message-ID: 7fc2712d-7ff3-bd6c-3051-8221f1685859 () rmail ! de
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After switching from tcp to unix socket, postfix as milter client is 
fast like a rocket (less than a second).

Just wondering which tcp parameter causes the long delay


Matthias Schneider



Am 19.08.19 um 10:34 schrieb Matthias Schneider:
> Chris, can you tell me your postfix version/settings?
> 
> When i do a load-test on my milter application, i can also get 100mb 
> in about a second proceesed (with 65535 sized chunks).
> 
> But postfix (3.3.0 and 3.4.5) only sends about 24 body chunks per 
> second to my milter application. Its the only milter configured and 
> the milter is running on 
> https://protection.retarus.com/v1?u=127.0.0.1&c=3ii9Gwp&r=3FiFpNbrhgwKRK1FMoFWR1&k=7s1&s=2xmP97Jog50dON88kIi5CzD5MGfUsDQvVF2HIwJfHq4 \
>  (so no latency issues)
> 
> Matthias
> 
> 
> 
> 
> Am 16.08.19 um 18:06 schrieb Chris Wedgwood:
> > > Postfix with default milter body chunk size 65535:
> > > 
> > > mail processing time 1m30.154298259s
> > > 
> > > Postfix with milter body chunk size 1048576:
> > > 
> > > mail processing time 17.52360866s
> > it looks to me like postfix is able to feed a milter very quickly
> > 
> > i just did a couple of quick tests here, an ~83 MiB message only takes
> > a second or two to pass through two milters (debug log shows 1360 64K
> > fragments and one smaller tail fragment)


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