Hi!

I am using a large sdbm database to store md5 hashes (as key) and about 32bytes of data per entry (as value). 
$ref = tie(%hashs,'SDBM_File', "$path/hashs", O_RDWR|O_CREAT, 0644) or
+ die "Couldn't tie SDBM file: $!; aborting";

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I know about sdbm's 1024/1008 bytes limit (which I am not exceeding) and sdbm is doing good work for me. As far as I know it does not drop data like mentioned in here on my 3.5GB db with millions of records... And its fast! (beating db_file and everything else..)

But how can I make it even faster? Is there a way to tell sdbm to reduce the page size to, in my case, 160bytes? Would this give a speed gain? Or should I just reduce my amount of data to, let's say 92 bytes using a different hash and less payload. Would sdbm adapt? (how do I tell sdbm to use a different PAIRMAX like the readme sais)

I am adding 20-60 new hashes per write-cycle. Does it help sdbm's internal seeks to feed it the hashes in sorted order? (and if so, what exactly is sdbm's internal sort? any examples?)

So many questions... Any answers?

In reply to Further optimize usage of SDBM_File by isync

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