My bad :) On Tue, Sep 15, 2009 at 10:55 PM, Doug Ledford <dledford@xxxxxxxxxx> wrote: > On Sep 15, 2009, at 2:12 PM, Majed B. wrote: >> >> Well, just because the PCI-e 1x bus can do 250 MB/s, it doesn't mean >> that the Port Multiplier (PM) can reach that speed, hence me telling >> you to test the card itself with 1 disk to see its max speed, then add >> another and so on. > > You didn't tell me, you told Drew. And I wasn't reporting test results I > got in response to your instructions, these tests have already been done > (and well more in fact). I was just relaying what I found on this card and > this setup for Drew's benefit. > >> Some PMs can communicate with each other. Check the specification >> sheet to see if your PM can do that. If that's the case, keep your >> disks of one array connected to PMs of the same chip, and use the >> built-in ports of the motherboard for another array or just normal >> disks. > > This is a test machine I built specifically for testing bare ports versus pm > setups. I destroy and create new raid arrays on it all the time, and none > of them are for real use, just benchmarking. > > -- > > Doug Ledford <dledford@xxxxxxxxxx> > > GPG KeyID: CFBFF194 > http://people.redhat.com/dledford > > InfiniBand Specific RPMS > http://people.redhat.com/dledford/Infiniband > > > > > -- Majed B. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
