Re: [patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Mikulas Patocka
On Wed, 19 Sep 2012, Jeff Moyer wrote: > Mikulas Patocka writes: > > > On Wed, 19 Sep 2012, Jeff Moyer wrote: > > > >> Mikulas Patocka writes: > >> > >> > On Wed, 19 Sep 2012, Jeff Moyer wrote: > >> > > >> >> Jeff Moyer writes: > >> >> > >> >> > Hi, > >> >> > > >> >> > When testing against

Re: [patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Jeff Moyer
Mikulas Patocka writes: > On Wed, 19 Sep 2012, Jeff Moyer wrote: > >> Mikulas Patocka writes: >> >> > On Wed, 19 Sep 2012, Jeff Moyer wrote: >> > >> >> Jeff Moyer writes: >> >> >> >> > Hi, >> >> > >> >> > When testing against a pcie ssd or a ramdisk, making the block device >> >> > structure

Re: [patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Mikulas Patocka
On Wed, 19 Sep 2012, Jeff Moyer wrote: > Mikulas Patocka writes: > > > On Wed, 19 Sep 2012, Jeff Moyer wrote: > > > >> Jeff Moyer writes: > >> > >> > Hi, > >> > > >> > When testing against a pcie ssd or a ramdisk, making the block device > >> > structure cacheline_aligned provided a signific

Re: [patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Richard Kennedy
On 19/09/12 15:59, Jeff Moyer wrote: > Jeff Moyer writes: > >> Hi, >> >> When testing against a pcie ssd or a ramdisk, making the block device >> structure cacheline_aligned provided a significant increase in >> performance: > > Self-NACK on this one. This results in a ton of warnings: > > inc

Re: [patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Jeff Moyer
Mikulas Patocka writes: > On Wed, 19 Sep 2012, Jeff Moyer wrote: > >> Jeff Moyer writes: >> >> > Hi, >> > >> > When testing against a pcie ssd or a ramdisk, making the block device >> > structure cacheline_aligned provided a significant increase in >> > performance: >> >> Self-NACK on this one

Re: [patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Mikulas Patocka
On Wed, 19 Sep 2012, Jeff Moyer wrote: > Jeff Moyer writes: > > > Hi, > > > > When testing against a pcie ssd or a ramdisk, making the block device > > structure cacheline_aligned provided a significant increase in > > performance: > > Self-NACK on this one. This results in a ton of warnings

Re: [patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Jeff Moyer
Jeff Moyer writes: > Hi, > > When testing against a pcie ssd or a ramdisk, making the block device > structure cacheline_aligned provided a significant increase in > performance: Self-NACK on this one. This results in a ton of warnings: include/linux/fs.h:727: warning: ???__section__??? attrib

[patch] block: make struct block_device cacheline_aligned

2012-09-19 Thread Jeff Moyer
Hi, When testing against a pcie ssd or a ramdisk, making the block device structure cacheline_aligned provided a significant increase in performance: vanilla READWRITE CPU Job Name BW