Thank you, I was having the same problem.  My DNS cache was 300MB, wich 
is impressive, since it had only been runing for 20 hours on our schools 
2mb connection.  Is there a way to limit which interfaces to check the 
DNS names for?  Or to expire them after a certain amount of time?

Brian

Gary Gatten wrote:
> Don't know if it will help in your case, but the dnsCache.db file seems
> to cause me trouble when it gets "big".  Stop nTop, delete that file,
> and fire it up again.  Maybe it will help - if not you didn't really
> hurt anything.
>
> Gary
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
> Radu Constantinescu
> Sent: Thursday, February 07, 2008 8:11 AM
> To: [email protected]
> Subject: [Ntop] Ntop 3.3 on FC4 or FC5 will crash after a while (10min
> to XXdays)
>
> Ntop is a great tool. I use to have the 3.2 version
> installed from a RPM on a Fedora 4 machine and that
> one use to be kind of stable.
>
> Lately I got the latest stable version from
> http://downloads.sourceforge.net/ntop/ntop-3.3.tar.gz
> and compiled that on Fedora 5 and Fedora 4 because I
> found no RPM available. All dependencies solved and it
> did compiled OK.
>
> I start Ntop with a command like:
> ntop -u ntop -i eth1 --daemon --use-syslog=daemon
> --no-promiscuous --no-fc
> or
> ntop -u ntop -i eth1 --use-syslog=daemon
> --no-promiscuous  --no-fc &
>
> Unfortunatelly it will stay up for a while (10 min to
> xx days) and then will crash with an error similar to:
>
> FC4 crash
> *** glibc detected *** ntop: free(): invalid pointer:
> 0x089681f0 ***
> ======= Backtrace: =========
> /lib/libc.so.6[0xe511e0]
> /lib/libc.so.6(__libc_free+0x77)[0xe5172b]
> /usr/local/lib/libntopreport-3.3(ntop_safefree+0x27)[0x7c082b]
> /usr/local/lib/libntopreport-3.3(freeSession+0x124)[0x7d63f0]
> /usr/local/lib/libntopreport-3.3(scanTimedoutTCPSessions+0x1dc)[0x7d699c
> ]
> /usr/local/lib/libntopreport-3.3(purgeIdleHosts+0x3bb)[0x7ba08f]
> /usr/local/lib/libntopreport-3.3(scanIdleLoop+0x22f)[0x7c16e3]
> /lib/libpthread.so.0[0x6fcbd4]
> /lib/libc.so.6(__clone+0x5e)[0xeb84fe]
> ======= Memory map: ========
>
> Any Ideas?
>
> Also 3.3 does look great but is slow over a satellite
> connection compared to 3.2.
>
> Regards,
> Radu
>
>
>
>
>
>
>
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--
Brian Riffle
System and Network Administrator

Klamath Community College
7390 South 6th St
Klamath Falls, OR 97603

Phone   541.880.2245
Fax     541.885.7758

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