Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 31 Mar 2003 15:55:44 -0800 | From | Joel Becker <> | Subject | Re: 64-bit kdev_t - just for playing |
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On Mon, Mar 31, 2003 at 03:41:50PM -0800, Badari Pulavarty wrote: > I have been playing with supporting 4000 disks on IA32 machines. > There are bunch of issues we need to resolve before we could > do that.
That's the conversation I'm trying to kickstart.
> I am using scsi_debug to simulate 4000 disks. (Ofcourse, I had > to hack "sd" to support more than 256 disks). Anyway, I noticed > that I lost almost 350MB of my lowmem, when I simulated 4000 disks. > We are working on most of these. But there are userlevel issues > to be resolved. Here is the list ...
Wow, this is cool. Thanks for telling me about this.
> I have not done any IO on these yet. When I mount all of these and do > IO on them, we might see new issues. So with all these, I will be doubtful > if we can ever reach 16k disks on IA32.
We're going to have to find a way. IA32 is going to be around for long enough, I think. Easily 8k disks, as soon as the folks who are doing 4k disks today want to multipath.
Joel
--
Life's Little Instruction Book #226
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Joel Becker Senior Member of Technical Staff Oracle Corporation E-mail: joel.becker@oracle.com Phone: (650) 506-8127 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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