Hi Danny, I am not able to help you with your question but would like to know what size disks you are using. I put 4x1TB drives in mine but the unit freezes building the raid. I tried 750G disks with the same effect. I will buy 500gig disk if I know this works. what is wierd for me is why the size of the disk would matter at all?
regards Mark On Thu, May 13, 2010 at 1:55 AM, <[email protected]> wrote: > Hi all - > Thanks to the work of many on this mailing list, I've been able to install > SID (w/ kernel 2.6.32-5) on my SS4000-E NAS. > Much to my surprise, the performance of the unit is pretty much identical to > how it was running the proprietary Falconstor implementation. > > hdparm -tT /dev/sda reads : > /dev/sda: > Timing cached reads: 128 MB in 2.00 seconds = 63.93 MB/sec > Timing buffered disk reads: 114 MB in 3.04 seconds = 37.44 MB/sec > The results from hdparm are static across all 4 drives. > > Needless to say -- these numbers are atrocious. Max throughput by any means > (NFS, FTP, etc.) is about 5MB/sec on writes to the NAS, and 8-9MB/sec on > reads from it. > > I did come across an earlier post from "Andrushka" that stated 2.6.32 has > DMA enabled for "this platform". >From everything I have read, there is no > DMA to enable/disable for SATA, but my knowledge is extremely limited in > this arena. He does claim that an alternative linux distro installed on the > box got 12MB/sec out of the unit. > (post is here: > http://us.generation-nt.com/ss4000e-iop-dma-help-170355901.html ) > > I'm wondering if anyone has figured out why the performance of this unit is > so overwhelmingly bad, or if anyone has suggestions on how to go about > diagnosing the cause? > Many thanks, > Danny -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
