Hello,
until Bluestore gets caching that is
a) self-tuning (within definable limits) so that a busy OSD can consume
more cache than ones that are idle AND
b) the cache will be as readily evicted as pagecache in low memory
situations
you're essential SoL, having the bad choices of increasing
* 1024*1024 (512 MB)
- Original Message -
From: "David Turner"
To: "Tyler Bishop"
Cc: "ceph-users"
Sent: Friday, August 31, 2018 1:31:37 AM
Subject: Re: [ceph-users] Best practices for allocating memory to bluestore
cache
Be very careful trying to utili
Be very careful trying to utilize more RAM while your cluster is healthy.
When you're going to need the extra RAM is when you're closer is unhealthy
and your osds are peering, recovering, backfilling, etc. That's when the
osd daemons start needing the RAM that is recommended in the docs.
On Thu,
Hi,
My OSD host has 256GB of ram and I have 52 OSD. Currently I have the cache
set to 1GB and the system only consumes around 44GB of ram and the other
ram sits as unallocated because I am using bluestore vs filestore.
The documentation:
