Re: [newbie] Download HTTP?
On Wednesday 10 November 2004 02:24, Eric Scott wrote: Yo; does anybody know where I can download Mandrake 10.1 PPC via http instead of FTP? On the FTP mirrors I'm getting an average of about 9KB/s. That just won't do when download 2100MB of data. My satellite broadband has roughly a 600k down/4k up connection... .Yes, I said four up, not forty. I don't know if this would slow down an FTP connection, it doesn't make sense to me, but the point is it's download really really slow. Anyway, I'd like to try http or something instead of ftp, and helpers? Your 4 kB uplink can very well be affecting your transfer rate, as can the quality of your satellite channel. The way that IP protocol works (http AND ftp) Is that the sending device will send out Frames of data. By default the frames are a maximum of 4096 bytes long. Each frame is numbered. Once a default of 8 frames has been sent (The Window), then transmission will stop until an acknowlegment is received that the first frame arrived OK, when the next frame is then sent. So transmission consists of frames coming down and acks going back in a 'sliding window'. In a medium with high propagation delay (Satellites have I think a 150ms delay), then a situation can occur where the time taken to receive the acks is higher than the time it takes to send 8 frames of data, and the sender has to wait for acks before it can send the next frame. Also if the bandwidth of the return channel is very low the time it takes to send the acks will make an impact. To improve transmision in this environment you can increase the number of bytes in a packet . The command 'ifconfig eth0 mtu 8196' will double the number of bits in flight before a response is expected, or increase the size of the Window (sorry I do not know the command for that) But then you can run into another problem. If your medium has a high error rate then the probability of a frame error goes up with frame size and throughput can go down dramatically. Since you are getting only 9kB I suspect this may be already happening to you. You may get better throughput if you **reduce** the mtu of your frames. Or, of course the problem may simply be the quality of the mirror source you are downloading from. HTH derek -- www.jennings.homelinux.net http://twiki.mdklinuxfaq.org Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
Re: [newbie] Download HTTP?
On Wednesday 10 November 2004 02:24, Eric Scott wrote: Yo; does anybody know where I can download Mandrake 10.1 PPC via http instead of FTP? On the FTP mirrors I'm getting an average of about 9KB/s. That just won't do when download 2100MB of data. My satellite broadband has roughly a 600k down/4k up connection... .Yes, I said four up, not forty. I don't know if this would slow down an FTP connection, it doesn't make sense to me, but the point is it's download really really slow. Anyway, I'd like to try http or something instead of ftp, and helpers? What Sat service are you using? If it is directway, they have a thing called FAP that limits you to about 150 MB down load at full speed and then slows to a crawl. Most other sats have similar policies. I put up with this for years until I got DSL. If this is the case, the least frustrating solution is to order a se of disks from cheap bites or some other site that will ship them for a minimal charge. Check the fine print at your providers site or give them a call. Pat Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
[newbie] Download HTTP?
Yo; does anybody know where I can download Mandrake 10.1 PPC via http instead of FTP? On the FTP mirrors I'm getting an average of about 9KB/s. That just won't do when download 2100MB of data. My satellite broadband has roughly a 600k down/4k up connection... .Yes, I said four up, not forty. I don't know if this would slow down an FTP connection, it doesn't make sense to me, but the point is it's download really really slow. Anyway, I'd like to try http or something instead of ftp, and helpers? -- Registered Linux user #366862 Not that you care, but this message was sent from a 750MHz Athlon system running SuSE Linux 9.1 (Kernal 2.6.5) and KMail 1.62. I aslo run Red Hat Linux 8.0 (Kernal 2.4.18), Debian GNU/Linux 3.0 (Kernal 2.2.20), Mandrake Linux 9.2 (Kernal 2.4.22), and YellowDog Linux 3.0 (Kernal 2.4.20) on various systems and architectures for various reasons. Yeah, and there's a old Mac OS in there somewhere that I use as a bootloader for Linux, and a Windows XP box used as a router for my Linux-based network, but they don't count, 'cuz they aren't real OS's. Who me? Biased? Nah! Failure is not an option with Microsoft; it's bundled with the software! Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Join the Club : http://www.mandrakeclub.com
