The first version of the nessDB 1.8 release

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BohuTANG

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Nov 27, 2011, 7:38:43 AM11/27/11

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HI,
nessDB storage engine is on LSM-Tree & B+Tree NOW.
Random-Write performance looks good.
Code is here:
https://github.com/shuttler/nessDB
It is still under construction.

BENCHMARK
=========
Keys: 16 bytes each
Values: 80 bytes each
Entries: 5000000
IndexSize: 114.4 MB (estimated)
DataSize: 400.5 MB (estimated)

--------------------------------------------------------------------------------------------------------------
nessDB: version 1.8.1(LSM-Tree && B+Tree with Level-LRU,Page-Cache)
Date: Sun Nov 27 18:19:47 2011
CPU: 2 * Intel(R) Pentium(R) Dual CPU T3200 @ 2.00GHz
CPUCache: 1024 KB

+-----------------------+---------------------------
+----------------------------------+---------------------+
|Random-Write (done:4999999): 0.000020 sec/op; 50660.5 writes/
sec(estimated);
+-----------------------+---------------------------
+----------------------------------+---------------------+
|Random-Read (found:0): 0.000119 sec/op; 8382.7 reads /
sec(estimated);
+-----------------------+---------------------------
+----------------------------------+---------------------+
|Seq-Read (found:0): 0.000119 sec/op; 8417.3 reads /sec(estimated);
+-----------------------+---------------------------
+----------------------------------+---------------------+