[Ocfs2-tools-devel] [PATCH 10/11] libocfs2: Improve performance of ocfs2_load_allocator()
Sunil Mushran
sunil.mushran at oracle.com
Fri Sep 30 12:22:20 PDT 2011
ocfs2_load_allocator() calls ocfs2_cache_chain_allocator_blocks()
to preread the chained groups. Its impact on fsck performance is
negligible.
However it is expected to have a big impact on other tools that load
the allocators. Especially mkfs. But for that we have to first bump
up its cache size from a default of 8MB.
Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com>
---
libocfs2/alloc.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/libocfs2/alloc.c b/libocfs2/alloc.c
index ca1a13a..1cd21c6 100644
--- a/libocfs2/alloc.c
+++ b/libocfs2/alloc.c
@@ -85,6 +85,9 @@ static errcode_t ocfs2_load_allocator(ocfs2_filesys *fs,
ret = ocfs2_read_cached_inode(fs, blkno, alloc_cinode);
if (ret)
return ret;
+ /* Ignore error */
+ ocfs2_cache_chain_allocator_blocks(fs,
+ (*alloc_cinode)->ci_inode);
}
if (!(*alloc_cinode)->ci_chains) {
--
1.7.4.1
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