On Tue, Sep 07, 2004 at 10:51:22AM +0300, Pantelis Antoniou wrote: > Hi there. > > A colleague of mine has recently stubbled on a curious problem. He should have directed that question to netfilter-devel@lists.netfilter.org, which is the apropriate mailinglist. > He works on a embedded device which is connected to a USB ADSL modem. > > When the kernel is build without any IP filtering the transfer rate > is OK (~8.5Kbyte/sec). > > When he enables CONFIG_NETFILTER & CONFIG_NAT the rate drops at > ~4.5Kbyte/sec without him enabling any rules. > > The system load does not appear to be a problem. > > It is quite possible that there is a problem with the (proprietary) > ADSL driver, but I was wondering if someone else had some similar > problem in the past and could offer some advice on how to track it > down. No, this is actually very likely, if you are running on an embedded device. CONFIG_NAT will pull in everything starting from ip_tables, over ip_conntrack, iptable_nat,... What is the exact technical data of that device? > Regards > Pantelis -- - Harald Welte <laforge@gnumonks.org> http://www.gnumonks.org/ ============================================================================ Programming is like sex: One mistake and you have to support it your lifetime
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