Date: Tue, 2 Apr 2002 00:43:03 -0500 From: Brian T.Schellenberger <bts@babbleon.org> To: "messmate" <messmate@free.fr> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: slow files transfert Message-ID: <20020402054303.7B2D4BB39@i8k.babbleon.org>
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On Saturday 30 March 2002 12:55 pm, messmate wrote: | No, a NEW (3 months old 20G) hd and IDE (no usb). | And on a workstation (not over a network). | mess-mate [List protocol dictates that responses belong below that to which they are responding -- known in lingo as "no top-posting."] Well, I did a test just now and I'm getting 1M/s transferring within the same drive to different partitions using pax. Specifically, I did a pax -rw of a 1573110M directory and it took 28:57 of wall time, yielding 905M/s; I was actually doing other work at the same time, so the actual speed is somewhat higher, but 1M/s seems about right. I have a atapci0: <Intel ICH2 ATA100 controller> with a 45780MB <IC25T048ATDA05-0> [93015/16/63] at ata0-master UDMA100 I have no idea if this is good or bad performance with this hardware; I'm also uncertain whether this hardware really runs like that, as sometimes I get this message: ad0: DMA limited to UDMA33, non-ATA66 cable or device but not always -- and not since I rebooted in the session where I meaured the performance. If I'm really using UMDA100 and you are using IDMA33, for example, that could explain if you were getting rates in the area of 300k/s, but it's hard to see why it would be clear down at 80k/s. In addition, I run with write-cache off; it's on by default and this should be slowing my results down quite a bit compared to an "out of the box" installation. I have 512M of memory and 256M of swap. (Yes, my swap is smaller. Yes, I know that's unconventional. Thank you.) And a 900M processor. So your results seem quite a bit slower than I'd expect. | | On Sat, 30 Mar 2002 12:43:36 -0500 | | Brian T.Schellenberger <bts@babbleon.org> wrote: | | On Saturday 30 March 2002 01:36 pm, messmate wrote: | | | Hello all, | | | copying files from a dir to another or from a zip is very slow, +/- | | | 80kb/s. I'm running fbsd 4.5 with 128M/mem and a swap of 350M. | | | Is there any reason for this ? | | | | You mean on your plain old harddrive or over a USB or a network or what? | | | | FreeBSD USB transfer rates are rather slow, I've noticed; other transfer | | rates that I happen to have used are fine. | | | | | Linux do it with 2M/s. | | | Thanks | | | mess-mate | | | | | | To Unsubscribe: send mail to majordomo@FreeBSD.org | | | with "unsubscribe freebsd-questions" in the body of the message | | | | -- | | Brian T. Schellenberger . . . . . . . bts@wnt.sas.com (work) | | Brian, the man from Babble-On . . . . bts@babbleon.org (personal) | | ME --> http://www.babbleon.org | | http://www.eff.org <-- GOOD GUYS --> | | http://www.programming-freedom.org | | | | To Unsubscribe: send mail to majordomo@FreeBSD.org | | with "unsubscribe freebsd-questions" in the body of the message -- Brian T. Schellenberger . . . . . . . bts@wnt.sas.com (work) Brian, the man from Babble-On . . . . bts@babbleon.org (personal) ME --> http://www.babbleon.org http://www.eff.org <-- GOOD GUYS --> http://www.programming-freedom.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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