14 jan 2007 kl. 17.46 skrev Erick Erickson:
Map size, 10,000,000 <userid, lucdocid> pairs
Looking up 1,000,000 user ids and setting them in a bitset.
Total time to set all the bits, 1.016 seconds. Running inside of
Eclipse on
a 2700 MH AMD with 1G memory (and I used up almost all this memory,
but made
no attempt to optimize it at all).
If those user identities are incremental and without gaps, you can
save a bunch of memory by using a NIO buffer:
http://java.sun.com/j2se/1.4.2/docs/api/java/nio/IntBuffer.html
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