> From: [email protected]
> To: [email protected]
> Date: Mon, 28 Sep 2009 20:37:54 +0300
> Subject: Re: [Clamav-users] nonblock_connect: connect timing out (30 secs)
>
> >>>
> >>> Hello,
> >>>
> >>> But do I really need clamd??
> >>> As far as I can tell, clamd "only" gives me on-access
> >>> protection, right?
> >>>
> >>> Thank you
> >>> Agostinho
> >>>
> >>
> >> No, clamd does not give to transparent backgroup
> >> protection, like the Windows antivirus tools to. It is a
> >> daemonized version of clamscan, which means that it
> >> preloads the signature databases to memory, and scans
> >> the viruses in rapid manner when requested, as it does
> >> not need to reload the database again and again
> >> everyting like clamscan has to.
> >>
> >> Its purpose is speed up the scanning process. If you are
> >> familiar with SpamAssassin, clamd works like spamd in
> >> SpamAssassin.
> >>
> >> clamd sits resident in memory, and the client, clamdscan
> >> works as its client, passing the material to clamd to
> >> process. This is fast and efficient compared to plain
> >> clamscan. Saves resources and time needed to scan.
> >>
> >>
> >>
> >> _______________________________________________
> >> Help us build a comprehensive ClamAV guide: visit
> >> http://wiki.clamav.net
> >> http://www.clamav.net/support/ml
> >
> >
> >
> > Hello Jari,
> >
> > I see... so it's mainly a performance/efficiency thing.
> > Right?
> >
> > I thought it would provide me on-access scanning :-)
> > But if it loads all the virus def in memory won't that be
> > very RAM consuming?
> >
>
> Not really. It you process say 2 mail simultaneously with clamscan, the 2
> clamscan processes load the database into memory twice.
>
> If you process them with clamdscan, the single clamd has loaded the database
> only once, and shares that load with the two scanning processes/threads.
>
> It saves resources in the end game. You see: if you want to use clamav, the
> database has to be loaded in any case.
>
> With 1000 mails, clamscan loads the database 1000 times, clamd only once.
>
>
> _______________________________________________
> Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
> http://www.clamav.net/support/ml
Hum... I see now.
OK.
Thanks for the clarification.
Agostinho
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