-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Ronciak, John wrote: > Is this being seen on the bare metal (without KVM at all)? Is that what you > meant by "testing on the maching itself"? What's type of system is this? > This is a low performance networking device (i.e. x1 PCIe) but if it's > working OK on IPv4 and ant IPv6 then it could be lots of things other then > the NIC/driver.
Yes.. It happens on the bare metal. ipv6 is consistently about 1/10th of the transfer speed of ipv4, between two machines on the same network, due to retransmissions. I'm not definitively saying it's the driver, only that switching checksum offloading off cures the problem completely.. I can narrow it down to tx-checksum (enabling rx checksums doesn't appear to impact performance). The system is an intel dual core 6...@2.4ghz, ICH9 chipset, 4G Memory, 1TB of raid1. Can't find out much more detail without ripping the case apart.. Tony -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.12 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJLK92MAAoJEJ1qCQ6ePCDU2XQH/jEua13BS7Jd9SV0AeTrzR2a hxClC2vTNOOb3Z/qXd6Uy6QP3sajq4yWN6yrnz/3vnl9BYtb6Ti+fpz+6sIqV4cZ y+h0K3PrEyNSkldLHvkRhSfVExVy57ijByONlRqV9JBmXh3KbjQgg0ZGA/cKPsuh yfMYipuVhJK4A0QcSlCU1SjIcQiI35ZPjgEEaPbIcd+I+CQbq0RZoBNSg3HFg1Bu hCErrT2LeWL0lZPr4ZziFBVj2MamsoBBgWE4QmDSJC6ynlouiOYa460AazkTfT4E U4ylse2UQpy08FspnX+ezLdD312rNmTNBPBpjCDZed1ErSmFZveQj3aERE545bY= =1ECQ -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel
