Forgot to CC to the mailing list... -------- Forwarded Message -------- > From: davidMbrooke <[EMAIL PROTECTED]> > To: plug bert <[EMAIL PROTECTED]> > Subject: Re: [leaf-user] pc router performance, hardware issues > Date: Thu, 13 Dec 2007 18:31:08 +0000 > > Hi, > > On Wed, 2007-12-12 at 16:59 -0800, plug bert wrote: > > Hello All, > > > > i have some questions that i've wanted to ask, but > > were afraid to, given that they're quite basic. i hope > > for the understanding and indulgence of my fellow > > listers B) > > > > 1. Is there an exact formula to compute how much RAM, > > or how good a CPU i would need for a pc router? > I have a simple installation - a small private network, single broadband > connection to the Internet via a Cable Modem. I *used* to use a Pentium > I, 100MHz, 24MB RAM machine with 10Mb/s ISA network cards. On that > machine I saw approx 10% CPU utilization for each 1Mb/s of download > bandwidth. > > I recently upgraded to a Pentium II, 250MHz, 168MB RAM, with 100Mb/s PCI > network cards. On this new system I see roughly 1% CPU utilization for > each 1Mb/s of download bandwidth. > > > > > 2. How would one know that the pc router is already > > being overwhelmed? Are dropped packets the only sign? > > So far i haven't seen any dropped packets at the > > company's router, but i have some nagging suspicions > > that it's slowing us down. > Monitor it, using something like NetSNMP (netsnmpd.lrp) on the router > and MRTG / Cacti on another (Linux) machine. It's fairly easy to monitor > network bandwidth and CPU utilization. > > > > > 3. Can LEAF(specifically LEAF BeringUClibc-2.2.2) make > > efficient use of multicore processors? > I've been investigating this recently for another Bering-uClibc > installation (a file server, not a router). I notice that the standard > Bering-uClibc Kernel configuration file has CONFIG_SMP not set, so I > think the kernel will ignore additional CPUs. It would presumably be > possible to compile a custom kernel with CONFIG_SMP=y > > > > > thanks! > > > > > > > > > > ____________________________________________________________________________________ > > Be a better friend, newshound, and > > know-it-all with Yahoo! Mobile. Try it now. > > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > > > > > ------------------------------------------------------------------------- > > SF.Net email is sponsored by: > > Check out the new SourceForge.net Marketplace. > > It's the best place to buy or sell services > > for just about anything Open Source. > > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace > > ------------------------------------------------------------------------ > > leaf-user mailing list: leaf-user@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/leaf-user > > Support Request -- http://leaf-project.org/
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