[opensuse] Real-world Transfered Speed over 100tx Network
Listmates, What are the real-world transfer speeds you are seeing with rsync SuSEbox-to-SuSEbox over a 100TX network? As files get larger, the backup/transfer times keep rising. I am seeing transfer rates for gigabyte size files of 11.04 MB/s over the network. A comparison to drive-to-drive transfers within the same 10.3 box are about 28 MB/s. I wouldn't expect box-to-box transfers to be the same as drive-to-drive transfers, but losing 60% seems large. That maybe normal, but I thought I would ask and see what others are seeing. Are there any other tips or tricks to speed things up? -- David C. Rankin, J.D., P.E. Rankin Law Firm, PLLC 510 Ochiltree Street Nacogdoches, Texas 75961 Telephone: (936) 715-9333 Facsimile: (936) 715-9339 www.rankinlawfirm.com -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Tue, Oct 21, 2008 at 10:23 PM, David C. Rankin <drankinatty@suddenlinkmail.com> wrote:
What are the real-world transfer speeds you are seeing with rsync SuSEbox-to-SuSEbox over a 100TX network? As files get larger, the backup/transfer times keep rising. I am seeing transfer rates for gigabyte size files of 11.04 MB/s over the network. A comparison to drive-to-drive transfers within the same 10.3 box are about 28 MB/s. I wouldn't expect box-to-box transfers to be the same as drive-to-drive transfers, but losing 60% seems large. That maybe normal, but I thought I would ask and see what others are seeing.
100Mb Ethernet has a Theoratical Max speed of 12.5MB/s. If you are getting 11+, then you are doing fine. If you wnet with Gigabit, you would be limited by the speed of the drives most likely because Gigabit has a 125MB/s Theoratical transfer rate. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wed, Oct 22, 2008 at 13:35, Larry Stotler <larrystotler@gmail.com> wrote:
If you are getting 11+, then you are doing fine.
Yes, I'd say that's very good. (From memory) Ethernet plus TCP have ~6% overhead, add to that rsync (and presumable SSH) overheads and I'd say you're maxing the network out nicely. h -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Larry Stotler wrote:
On Tue, Oct 21, 2008 at 10:23 PM, David C. Rankin <drankinatty@suddenlinkmail.com> wrote:
What are the real-world transfer speeds you are seeing with rsync SuSEbox-to-SuSEbox over a 100TX network? As files get larger, the backup/transfer times keep rising. I am seeing transfer rates for gigabyte size files of 11.04 MB/s over the network. A comparison to drive-to-drive transfers within the same 10.3 box are about 28 MB/s. I wouldn't expect box-to-box transfers to be the same as drive-to-drive transfers, but losing 60% seems large. That maybe normal, but I thought I would ask and see what others are seeing.
100Mb Ethernet has a Theoratical Max speed of 12.5MB/s. If you are getting 11+, then you are doing fine. If you wnet with Gigabit, you would be limited by the speed of the drives most likely because Gigabit has a 125MB/s Theoratical transfer rate.
Not quite. There's also overhead, such as the various headers & CRC that take some of that bandwidth. The ethernet switch may also limit bandwidth. -- Use OpenOffice.org <http://www.openoffice.org> -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (4)
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David C. Rankin -
Henare Degan -
James Knott -
Larry Stotler