lkml.org 
[lkml]   [1996]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: PPP - slow

I just made my slow PPP problems go away! I too have suffered most of the
problems described on this mailing list. After experimenting with two
motherboards, I finally hit upon turning off the L2 write-back cache.

I'm using ppp-2.2.0e and both v1.3.80 and v1.3.81 without any strange
behavior. Running with L2-write-through cache increases my linux compile
time 20%, but I haven't seen any of the strangeness. No more
'ping/socket-delayed' messages, no hard-disk timeouts, no more dropped
packets from my ISP (was dropping %10).

I'm running an AMD486-120SV8B and an AMD586-133 connected via ATI-1500
Lance bus-mastering ethernet cards. I suspect that neither the MTI 407e nor
the noname UMC8881 PCI/VLB motherboards implement the L2-writeback cache
properly. The internal L1 cache seems to work in write-back mode.

Hope this helps. YMMv.

___________________________________________________________
Howard C. Tyler | email: theurgi@primenet.com
phn: (602)-866-9074 | 1KSPT: 13.96 exCOG 1741
___________________________________________________________





\
 
 \ /
  Last update: 2005-03-22 13:36    [W:0.024 / U:0.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site