Date: Thu, 30 Oct 1997 18:11:59 -0500 From: "Brian J. McGovern" <mcgovern@spoon.beta.com> To: questions@freebsd.org, hackers@freebsd.org Subject: Win 95 PPP faster than pppd? Message-ID: <199710302312.SAA04687@spoon.beta.com>
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Sorry for the cross-post, but, although this is question, I think it'll need the knowledge base of the hackers list. Anyhow, today, I ran a Windows 95 client, and a FreeBSD 2.2.2 and 2.2.5 PPPd client through a remote access server that I'm testing. DTE rate on the 16550s were 115200 in all cases. VJ compression on, bsd compression off. I FTP'ed a TSB-standard file that has been rated "very compressible". I ran dozens of iterations on both the Win 95, and FreeBSD box, and got consistent results. The FreeBSD boxes managed about 8.26 K/s. The modem DTE port was saturated at 115200bps +/- 20bps . The Win95 box managed about 10.5 K/s. Again, the DTE port on the modem was saturated at 115200bps +/- 20bps. Anyone care to take a guess at why there is such a difference? I hand-checked all of the transfer times and file sizes, so both clients are calculating the throughput properly. I did notice that the FreeBSD boxes are sending 1 1/2 - 2 times the amount of traffic back upstream (appears to be acks from TCPDUMP on the FTP Server). The only other strangeness I noticed was that the window size on the Win95 boxes were ~7-8K, compared to the 15-16K on the FreeBSD boxes. Just to check to see if it was a client problem, I also used fetch to pull some files. Same results. -Brian
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