The rate of effective use of memory is low when doing sst merge, is it right? about rocksdb HOT 2 CLOSED

Can you elaborate this problem a little bit more? What are the "useless values"?

Right now when compacting sst files, we'll not load the whole file; instead, we'll read 1 block (by default it is 4k) to the memory.

from rocksdb.

Is there an option to use madvise for those reads?

On Thu, Jan 2, 2014 at 10:50 AM, Kai Liu [email protected] wrote:

Can you elaborate this problem a little bit more? What are the "useless
values"?

Right now when compacting sst files, we'll not load the whole file;
instead, we'll read 1 block (by default it is 4k) to the memory.

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Reply to this email directly or view it on GitHubhttps://github.com//issues/49#issuecomment-31474480
.

Mark Callaghan
[email protected]

from rocksdb.