On Sat, Jan 26, 2013 at 3:40 AM, Sam Lang sam.l...@inktank.com wrote:
On Fri, Jan 25, 2013 at 10:07 AM, Andrey Korolyov and...@xdel.ru wrote:
Sorry, I have written too less yesterday because of being sleepy.
That`s obviously a cache pressure since dropping caches resulted in
disappearance of
Dear Sam, Dan and Marcus,
Thank you a lot for the replies. I'll do more tests today.
The length of each object used in my test is just 20 bytes. I'm glad
you got 400 objects/s! Iif I get that with a length of 8 KB using a
2-node cluster, then ceph with rados will be already faster than my
This series applies on top of the new rbd request code.
When an osd request is marked to linger the osd client will keep
a copy of the request, and will resubmit it if necessary. If it
gets resubmitted, it will also call the completion routine again,
and because of that we need to make sure the
Move the code that unregisters an rbd device's lingering header
object watch request into rbd_dev_header_watch_sync(), so it
occurs in the same function that originally sets up that request.
Signed-off-by: Alex Elder el...@inktank.com
---
drivers/block/rbd.c | 10 --
1 file changed, 4
The new request code arranges to get a callback for every osd
request we submit (this was not the case previously).
We register a lingering object watch request for the header object
for each mapped rbd image.
If a connection problem occurs, the osd client will re-submit
lingering requests. And
