Date: Thu, 30 Oct 1997 19:48:56 -0500 From: dennis <dennis@etinc.com> To: "Brian J. McGovern" <mcgovern@spoon.beta.com>, hackers@FreeBSD.ORG Subject: Re: Win 95 PPP faster than pppd? Message-ID: <3.0.32.19971030194855.00b21d10@etinc.com>
next in thread | raw e-mail | index | archive | help
At 06:11 PM 10/30/97 -0500, Brian J. McGovern wrote: >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 Perhaps FreeBSD actually gives some cpu to other tasks running in the system, unlike windows. I assume that you were using the same modem in each box...external or internal? dennis
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3.0.32.19971030194855.00b21d10>