> 昔はRealTEK(通称:蟹ﾁｯﾌﾟ)ってのがあって(;´Д`)

FreeBSDのｿｰｽにﾎﾞﾛｸｿ書かれてて笑ったよ(;´Д`)
http://www.jp.freebsd.org/cgi/cvsweb.cgi/src/sys/pci/if_rl.c?rev=1.189&content-type=text/x-cvsweb-markup

 * The RealTek 8139 PCI NIC redefines the meaning of 'low end.' This is
 * probably the worst PCI ethernet controller ever made, with the possible
 * exception of the FEAST chip made by SMC. The 8139 supports bus-master
 * DMA, but it has a terrible interface that nullifies any performance
 * gains that bus-master DMA usually offers.

 * It's impossible given this rotten design to really achieve decent
 * performance at 100Mbps, unless you happen to have a 400Mhz PII or
 * some equally overmuscled CPU to drive it.

参考：2009/08/01(土)21時16分26秒