On Wednesday, 30.03.2005 at 09:21 +0100, Dave Ewart wrote: > On Wednesday, 30.03.2005 at 01:01 -0500, Matt Peter wrote: > > > I've just gone ahead and re-installed a testing distribution, and > > I'm trying to restore my original setup, which was a simple debian > > box in front of a windows machine, debian box running NAT via > > firehol, debian running dhcp. The interesting/perplexing part is > > this: As soon as I start to go heavy internet usage on usage on the > > windows machine, the linux nat box slows down to unreasonable > > speeds. There isn't anything really apparent to me going on in top. > > I'm using firehol to do the nat, along with the rest of the > > firewalling. I never had this problem before I re-installed the OS, > > but now its making the system unusable. I'm not looking for > > specific solutions since this isn't that sort of question, but if > > anyone has any general avenues I can look into, to figure out what's > > making the system crawl, I would much appreciate it. > > You say the box "slows down to unreasonable speeds" and "crawls" - can > you identify what aspect of the system is slow? Is it CPU usage, RAM > usage, disk I/O, network I/O etc.? If this system is crawling when > you're using a system behind its NAT interface, then that suggests the > NAT rule processing is causing a problem ... Just had another thought - are you *logging* a lot in your NAT rules? That wouldn't show up in 'top' and could be the cause of your problems ... Dave. -- Please don't CC me on list messages! ... Dave Ewart - davee@sungate.co.uk - jabber: davee@jabber.org All email from me is now digitally signed, key from http://www.sungate.co.uk/ Fingerprint: AEC5 9360 0A35 7F66 66E9 82E4 9E10 6769 CD28 DA92
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