[Bugs] [Bug 1659869] New: improvements to io-cache

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1659869

            Bug ID: 1659869
           Summary: improvements to io-cache
           Product: GlusterFS
           Version: mainline
            Status: NEW
         Component: io-cache
          Assignee: bugs at gluster.org
          Reporter: rgowdapp at redhat.com
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Created attachment 1514967
  --> https://bugzilla.redhat.com/attachment.cgi?id=1514967&action=edit
paper describing performance of glusterfs on ssds

Description of problem:
While working on bz 1629589,

* xavi pointed out io-cache could be the right place for current writes to
update the already-read data (another one is read-ahead).
* me and xavi both found out default page-size of io-cache (128K) is too
agressive and causes performance regression for random read workloads. This was
also reported in the paper attached. The paper was pointed out by Shawn Houston
from Red Hat. I assume the cache being referred in the paper refers to
io-cache.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the assignee for the bug.