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edit on why bucketcache

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stack 2014-08-08 11:22:47 -07:00
parent ef70ce8b50
commit 1f1a676cfe
1 changed files with 5 additions and 3 deletions
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src/main/docbkx/book.xml
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@ -2113,9 +2113,11 @@ rs.close();
</para>
<para>Fetching will always be slower when fetching from BucketCache,
as compared with the native onheap LruBlockCache. However, latencies tend to be
less erratic across time, because there is less garbage collection. This is why
you'd use BucketCache, so your latencies are less erratic and to mitigate GCs
as compared to the native onheap LruBlockCache. However, latencies tend to be
less erratic across time, because there is less garbage collection when you use
BucketCache since it is managing BlockCache allocations, not the GC. If the
BucketCache is deployed in offheap mode, this memory is not managed by the
GC at all. This is why you'd use BucketCache, so your latencies are less erratic and to mitigate GCs
and heap fragmentation. See Nick Dimiduk's <link
xlink:href="http://www.n10k.com/blog/blockcache-101/">BlockCache 101</link> for
comparisons running onheap vs offheap tests. Also see