openstack/swift
Code Issues Proposed changes

Object-server: keep SLO manifest files in page cache.

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Currently, SLO manifest files will be evicted from page cache
after reading it, which cause hard drives very busy when user
requests a lot of parallel byte range GETs for a particular
SLO object.

This patch will add a new config 'keep_cache_slo_manifest', and
try keeping the manifest files in page cache by not evicting them
after reading if config settings allow so.

Co-Authored-By: Tim Burke <tim.burke@gmail.com>
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Co-Authored-By: Alistair Coles <alistairncoles@gmail.com>
Change-Id: I557bd01643375d7ad68c3031430899b85908a54f
This commit is contained in:
Jianjian Huo
2023-06-05 11:09:27 -07:00
parent 1b7cf29476
commit cb1e584e64
5 changed files with 202 additions and 3 deletions
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5
etc/object-server.conf-sample
View File

@@ -143,6 +143,11 @@ use = egg:swift#object
# if small enough
# keep_cache_private = false
#
# If true, SLO object's manifest file for GET requests may be kept in buffer cache
# if smaller than 'keep_cache_size'. And this config will only matter when
# 'keep_cache_private' is false.
# keep_cache_slo_manifest = false
#
# on PUTs, sync data every n MB
# mb_per_sync = 512
#