On sön, 2008-06-15 at 10:57 +0800, Arkin Y wrote: > Acctually , I tried to use Linux OS default malloc, gnu malloc , dlmalloc, > dlmalloc could help me get the best performance among the three different > malloc . Interesting. For me dlmalloc fails completely when the process size goes above 2GB. > I checked all my mgr:info log , when I set the cache_mem to different size , > the stroe entries are different too . > When the cache memory is 4GB , the Store Entries are ~519396 > When the cache memory is 6 GB , the StoreEntries are ~776836 > When the cache memory is 8 GB , the StoreEntries are ~1026097 Are you running without an on-disk store? (cache_dir) > The average size of the stored objects almost ~8KB, so I am not sure > whether such problem was caused by large objects . Ok. > I checked a hash_lookup method , If in the worst cases in 8G scenario,it > looks like almost 2 times of hash keys will be traversed to get the > storeEntry than in 4 G scenario. The size of the hash table is dependent on the store size. But I guess this calculation screws up if there is no on-disk cache of reasonable size. On startup, what is reported NN for "Using NN Store buckets" in cache.log? Regards Henrik
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