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osd: drop default map cache size from 500 -> 200

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OSDs don't need this from each other anymore since they send
a pg_interval_map_t with pg notify.  This cache is only used
during startup when loading things up (and 200 is still > the
max advance of 150), and when clients appear with super old maps
(pretty unusual unless they are idle for long periods).

It should mean a pretty significant cut in memory...

Signed-off-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Sage Weil 2015-09-14 12:31:42 -04:00
parent 27d1e4d41e
commit 1ff51a299d
1 changed files with 2 additions and 2 deletions
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4
src/common/config_opts.h
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@ -591,8 +591,8 @@ OPTION(osd_tier_default_cache_min_read_recency_for_promote, OPT_INT, 1) // numbe
OPTION(osd_tier_default_cache_min_write_recency_for_promote, OPT_INT, 1) // number of recent HitSets the object must appear in to be promoted (on write)
OPTION(osd_map_dedup, OPT_BOOL, true)
OPTION(osd_map_max_advance, OPT_INT, 200) // make this < cache_size!
OPTION(osd_map_cache_size, OPT_INT, 500)
OPTION(osd_map_max_advance, OPT_INT, 150) // make this < cache_size!
OPTION(osd_map_cache_size, OPT_INT, 200)
OPTION(osd_map_message_max, OPT_INT, 100) // max maps per MOSDMap message
OPTION(osd_map_share_max_epochs, OPT_INT, 100) // cap on # of inc maps we send to peers, clients
OPTION(osd_inject_bad_map_crc_probability, OPT_FLOAT, 0)