> you can sometimes find really good older drives like Intel P4510s on ebay
> for reasonable prices. Just watch out for how much write wear they have on
> them.
Also be sure to update to the latest firmware before use, then issue a Secure
Erase.
>
The biggest improvement would be to put all of the OSDs on SSDs with
PLP. Next would be to put the WAL/DB on drives with PLP. If price is a
concern, you can sometimes find really good older drives like Intel
P4510s on ebay for reasonable prices. Just watch out for how much write
wear they
Thanks for the prompt response!
I see, and indeed some of them are consumer SSD disks. Is there any
parameter that we can change/tune to better handle the call "fdatsync"?
Maybe using NVMEs for the RocksDB?
On Thu, Feb 22, 2024 at 2:24 PM Mark Nelson wrote:
> Most likely you are seeing time
Most likely you are seeing time spent waiting on fdatsync in
bstore_kv_sync if the drives you are using don't have power loss
protection and can't perform flushes quickly. Some consumer grade
drives are actually slower at this than HDDs.
Mark
On 2/22/24 11:04, Work Ceph wrote:
Hello
