On Tue, May 20, 2014 at 10:07 AM, Kevin Burton wrote:
> This has not been my experience… In my benchmarks over the years noatime
> has mattered.
>
Have you compared to the atime case or the relatime case? The point of the
FAQ link posted is that the default behavior in XFS when you specify none
This has not been my experience… In my benchmarks over the years noatime
has mattered.
However, I might have not been as scientifically motivated to falsify the
noatime hypothesis… specifically, I might just have accidentally used
confirmation bias and assumed that noatime mattered and then moved
For XFS, using noatime and nodirtime isn't really useful either.
http://xfs.org/index.php/XFS_FAQ#Q:_Is_using_noatime_or.2Fand_nodiratime_at_mount_time_giving_any_performance_benefits_in_xfs_.28or_not_using_them_performance_decrease.29.3F
On Sat, May 17, 2014 at 7:52 AM, James Campbell <
ja...
Thanks for the thoughts!
On May 16, 2014 4:23 PM, Ariel Weisberg wrote:
Hi,
Recommending nobarrier (mount option barrier=0) when you don't know if a
non-volatile cache in play is probably not the way to go. A non-volatile cache
will typically ignore write barriers if a given block device is co
Hi all-
What partition type is best/most commonly used for a multi-disk JBOD setup
running Cassandra on CentOS 64bit?
The datastax production server guidelines recommend XFS for data partitions,
saying, "Because Cassandra can use almost half your disk space for a single
file, use XFS when usin
Hi,
Recommending nobarrier (mount option barrier=0) when you don't know if
a non-volatile cache in play is probably not the way to go. A
non-volatile cache will typically ignore write barriers if a given
block device is configured to cache writes anyways.
I am also skeptical you will see a bo
That and nobarrier… and probably noop for the scheduler if using SSD and
setting readahead to zero...
On Fri, May 16, 2014 at 10:29 AM, James Campbell <
ja...@breachintelligence.com> wrote:
> Hi all—
>
>
>
> What partition type is best/most commonly used for a multi-disk JBOD setup
> running Ca
