| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20080131123627.599be68f.billfink@mindspring.com> Date: Thu, 31 Jan 2008 12:36:27 -0500 From: Bill Fink <billfink@...dspring.com> To: Bruce Allen <ballen@...vity.phys.uwm.edu> Cc: SANGTAE HA <sangtae.ha@...il.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org, Stephen Hemminger <shemminger@...ux-foundation.org> Subject: Re: e1000 full-duplex TCP performance well below wire speed Hi Bruce, On Thu, 31 Jan 2008, Bruce Allen wrote: > > I see similar results on my test systems > > Thanks for this report and for confirming our observations. Could you > please confirm that a single-port bidrectional UDP link runs at wire > speed? This helps to localize the problem to the TCP stack or interaction > of the TCP stack with the e1000 driver and hardware. Yes, a single-port bidirectional UDP test gets full GigE line rate in both directions with no packet loss. [bill@...nce4 ~]$ nuttcp -f-beta -Itx -u -Ru -w2m 192.168.6.79 & nuttcp -f-beta -Irx -r -u -Ru -w2m 192.168.6.79 tx: 1187.0078 MB / 10.04 sec = 992.0550 Mbps 19 %TX 7 %RX 0 / 151937 drop/pkt 0.00 %loss rx: 1187.1016 MB / 10.03 sec = 992.3408 Mbps 19 %TX 7 %RX 0 / 151949 drop/pkt 0.00 %loss -Bill -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists