echo "Setting read-ahead to 64 MiB for /dev/md3" blockdev --setra 65536 /dev/md3 That's actually 65k x 512byte blocks so 32MiB Ah whoops, thanks! Results are meaningless without a crucial detail - wh
1. Utilized (6) 400 gigabyte sata hard drives. 2. Everything is on PCI-e (965 chipset & a 2port sata card) Used the following 'optimizations' for all tests. echo "Setting read-ahead to 64 MiB for /de
The RAID 1 read speed metrics do not depict multithreaded processes reading from the array simutaneouly. I would suspect that the read performance metrics would look better if 2 bonnie simulations we
On Wed, 28 May 2008, Keld Jørn Simonsen wrote: I added this in the wiki performance section. Ok. I think it would have been informative if also a test with one drive in a non-raid setup was describ
Justin Piszcz wrote: On Wed, 28 May 2008, Chris Snook wrote: Justin Piszcz wrote: Hardware: 1. Utilized (6) 400 gigabyte sata hard drives. 2. Everything is on PCI-e (965 chipset & a 2port sata card)
On Wed, 28 May 2008, Chris Snook wrote: Justin Piszcz wrote: On Wed, 28 May 2008, Chris Snook wrote: Justin Piszcz wrote: Hardware: Given that one of the greatest benefits of NCQ/TCQ is with parity R