[Dovecot] any idea why the mail downloading is slow?

Timo Sirainen tss at iki.fi
Fri Nov 3 12:18:21 UTC 2006

On 3.11.2006, at 13.01, LeVA wrote:

>> It probably shows that Dovecot spends most of its time in poll() (or
>> kqueue()). But it could be either waiting to be able to send more
>> data to the client, or waiting for a command from the client.
>   1168 pop3     1162550554.983041 CALL  write(0x1,0x7f64bbeb,0x1018)
>   1168 pop3     1162550554.983048 RET   write -1 errno 35 Resource
> temporarily unavailable

OK, so this means that the receiving end isn't reading the data fast  
enough, so kernel starts giving EAGAIN errors to write() calls. So  
there simply is a network bottleneck somewhere outside Dovecot..

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