-Neil I was not looking for any direct advantage. It is more a money VS performance thing. I have a old dual proc Opteron motherboard. I am going with 64-bit, but it is much cheaper if I just go buy a nice single proc board instead of buying two Opterons for my dual proc board. If I could get a 1.5~2X performance improvement with SMP I would pay the extra money. If there is no major performance difference, I will take the cheap road. Thank you for the good input. -Adam P.S. Here is my current plan. RAID 6, 6X 400GB SATA 2.0 HDD's, Athlon FX 53, 1GB DDR 400, Nvidia based motherboard, Gb Ethernet. Storing 15,000+ MP3's, 500+ movies. Neil Brown wrote: > On Monday May 22, talbotx@xxxxxxxxxxx wrote: > >> A few simple questions about the 2.6.16+ kernel and software RAID. >> Does software RAID in the 2.6.16 kernel take advantage of SMP? >> > > Not exactly. RAID5/6 tends to use just one cpu for parity > calculations, but that frees up other cpus for doing other important > work. > > >> Does software RAID take advantage of 64-bit CPU(s)? >> > > No more or less that other code in the kernel. Sometimes using a 64-bit > CPU is a cost because more data is shuffled around... > > Was there some particular sort of 'advantage' that you were thinking > of? > > NeilBrown > > > >> If there are any good web sites that cover this information, a link >> would be GREAT! >> >> -Adam Talbot >> >> - >> 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 >> > - > 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 > > - 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
