Author: Jeremy Harris Date: To: exim-users Subject: Re: [exim] Mail with thousands recipients takes exponential longer
time
On 12/03/2021 08:44, Cyborg via Exim-users wrote: > Am 12.03.21 um 08:27 schrieb Andrew C Aitchison via Exim-users:
>>
>>> Any ideas what's happening here ?
>>
>> The increasing delays remind me of the delays for failed logins.
>> Is there some sort of authentication, or similar pam or SMB access,
>> to check the existence of each recipient ?
>>
>
> i made a test mail with 3000 recipients in CC.
>
> Exim is increasing it's CPU Usage the more recipients are used until 100% CPU Core usage is reached:
>
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 1378404 root 20 0 66084 55300 10632 R 98,7 1,1 8:59.99 /usr/sbin/exim -Mc 1lKd2y-005m5p-3V
>
>
> I have a static linear timeframe from one recipient to another appearing in the log file, once the actual delivery from thunderbird ended.
> strace says, it's due to my SQL select i use. it would go faster if the SQL result would be cached, instead of repeating itself.
