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staging/lustre/obdclass: limit lu_site hash table size

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Allocating a big hash table using the formula for osd
does not really work for clients. We will create new
hash table for each mount on a single client which is
a lot of memory more than expected.

This patch limits the hash table up to 8M which has
524288 entries

Signed-off-by: Li Dongyang <dongyang.li@anu.edu.au>
Reviewed-on: http://review.whamcloud.com/18048
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7689
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleg Drokin
2016-03-30 19:48:22 -04:00
committed by Greg Kroah-Hartman
parent 56e18f8cdf
commit 81108182bb
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/lustre/lustre/obdclass/lu_object.c
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@@ -935,7 +935,7 @@ static void lu_dev_add_linkage(struct lu_site *s, struct lu_device *d)
* Initialize site \a s, with \a d as the top level device.
*/
#define LU_SITE_BITS_MIN 12
#define LU_SITE_BITS_MAX 24
#define LU_SITE_BITS_MAX 19
/**
* total 256 buckets, we don't want too many buckets because:
* - consume too much memory