dovecot 2 low TCP speed (fetching big mail)

[Wojciech Puchar]

tried with ipfw firewall turned off. no difference.
anyway - thanks for advice.

On Thu, 1 Jan 2015, Edgar Pettijohn wrote:

> I was just messing around with my pf.conf and then I read this, so just a 
> thought do you have any kind of firewall that may be slowing the process??
>
> On 01/01/15 06:29, Wojciech Puchar wrote:
>> i use dovecot 2 under FreeBSD (dovecot2-2.2.15 compiled from ports).
>> 
>> tried both with kqueue enabled or not.
>> 
>> everything works very fast, EXCEPT fetching big mail.
>> 
>> tried multiple clients (thunderbird on windows, alpine on the same server, 
>> alpine on other unix server connected by 1Gb/s LAN)  and fetching peaks at 
>> 1MB/s. NO SSL!
>> 
>> could you please point me where to search for a problem.
>> 
>> hints:
>> 
>> writing over IMAP (eg. writing to Sent folder) works at full speed.
>> 
>> Doesn't seem like a problem with unix server, every other service goes at 
>> speed 70-100MB/s both directions (like samba, ftp).
>> 
>> tried to turn off "kqueue" compile time option, no difference.
>> 
>> Please give me a hint at least what to check. Does dovecot use other way to 
>> sent data over TCP socket than other programs?
>> 
>> thank you.
>
>