Sage Weil wrote:
Hey Mark,
I just watched Brendan Gregg's talk at SCALE (which was extremely good)
and one of the things he mentioned is the importance of
-fno-omit-frame-pointer. I notice we are setting it via do_autogen.sh
(i.e., for developers) but not in the production builds. Should
On 02/21/2015 03:43 PM, Sage Weil wrote:
Hey Mark,
I just watched Brendan Gregg's talk at SCALE (which was extremely good)
and one of the things he mentioned is the importance of
-fno-omit-frame-pointer. I notice we are setting it via do_autogen.sh
(i.e., for developers) but not in the
At least at first glance it doesn't look like it's enabled on either our
RHEL7 or Ubuntu nodes. No numad running either.
Do you have disable autonuma balancing manually ?
because look at kernel config of both rhel7 and ubuntu, it's really seem to be
enabled by default:
On Thu, Feb 19, 2015 at 03:50:45PM -0800, Sage Weil wrote:
- assemble the transaction
- start any aio writes (we could use O_DIRECT here if the new hints
include WONTNEED?)
Note that kernel aio only is async if you specifiy O_DIRECT, otherwise
io_submit will simply block.
--
To unsubscribe
One Other thing you could also check, is if transparent hugepages is enabled
or not.
It's known to slowdown some applications, like databases for example. (So
maybe memstore too)
#cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]
This is disabled by default is you use
On Sat, 21 Feb 2015, Christoph Hellwig wrote:
On Thu, Feb 19, 2015 at 03:50:45PM -0800, Sage Weil wrote:
- assemble the transaction
- start any aio writes (we could use O_DIRECT here if the new hints
include WONTNEED?)
Note that kernel aio only is async if you specifiy O_DIRECT,
Hey Mark,
I just watched Brendan Gregg's talk at SCALE (which was extremely good)
and one of the things he mentioned is the importance of
-fno-omit-frame-pointer. I notice we are setting it via do_autogen.sh
(i.e., for developers) but not in the production builds. Should we be?
I think
