MailScanner slow and not taking all resources available

[Ugo Bellavance]

Martin Hepworth wrote:
> Ugo Bellavance wrote:
>> Hi,
>>
>> This is MailScanner version 4.54.6
>>
>> It sometimes happen on some servers (not always the same) that 
>> suddenly, the INQ grows very fast.  When I look at the server, CPU is 
>> used only at ~ 50% or less and MailScanner is not using the CPU that 
>> much.
>>
>> - The networks seems to be ok (I can easily download a file at 1 MB/s 
>> (10mbps link).
>> - DNS resolution seems to be quick
>> - SA doesn't time out
>> - System doesn't swap
>> - disk i/o doesn't look saturated
>>

<snip>

>> Anyone seeing this as well?
>>
> Ugo
> 
> If it was anyone else I'd be asking if you'd done the performane tuning 
> stuff on the wiki.
> 
> There is some odd stuff going on with the dnsrbl at the moment. People 
> on the nanog list are commenting on this.
> 
> Dunno is there is some other DDOS attacks going but also opendns are 
> under attack right now. Might be worth looking at which DNS/RBL's you 
> are using on this and seeing if you can work around of locally mirror RBLs.

It has now come back to normal... network congestion I think.

Regards,

Ugo