Messages in this thread | | | Date | Sun, 31 Mar 1996 02:23:54 -0700 (MST) | From | "Howard C. Tyler" <> | Subject | Re: PPP - slow |
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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 ___________________________________________________________
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