Read the back traffic on ntop - it's a multiple threaded app.  Self-locked
really shouldn't happen in 3.2, although it's just a warning - usually the
data at risk is only the locking data itself.  As a test, you can try using
the OS to restrict ntop to one processor (if it will allow you to do so).

-----Burton 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Arn
Vollebregt
Sent: Friday, January 20, 2006 4:24 AM
To: [email protected]
Subject: [Ntop] queuePacket/dequeuePacket errors

Hello,

I am having some troubles with running NTOP on a 100Mbit network with quite
some traffic to monitor. A short while after starting up the process the
webinterface becomes sluggisch and unresponsive at times. When I check
/var/log/messages I am seeing a flood of the errors below repeating

**WARNING** tryLockMutex() called 'queuePacket' with a self-LOCKED mutex
[EMAIL PROTECTED]:2219]
**WARNING** accessMutex() called 'dequeuePacket' with a self-LOCKED mutex
[EMAIL PROTECTED]:2399]

NTOP is also spawning multiple processes, at the time of writing I am up to
9 NTOP processes, running for a small 5 minutes now.

I recon NTOP cannot keep up with the traffic or the amount of hosts and
their data, are there ways to tweak NTOP? I figure the machine itself is not
the problem, since it concerns a dual Xeon 2.4Ghz, 1Gig of RAM with a SCSI
harddisk.

Arn Vollebregt

--
"Wisdom lies not in obtaining knowledge, but in using it in the right way"
 - kroesjnov 

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