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xiaoxichen / leveldb

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[Feature Required] Compaction read/write speed limit #168

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
We are running SSDB(a leveldb server, https://github.com/ideawu/ssdb), with 28G 
data total, 400k updates per day. LevelDB compaction happends 6-10 times per 
day. While compaction is in progress, all reads and writes made to leveldb is 
significant slow. The disk IO is almost full, this is the reason(I think) why 
leveldb slows down.

What is the expected output? What do you see instead?

Compaction won't slow down normal operations, leveldb's compaction thread 
should limit the disk read/write speed.

What version of the product are you using? On what operating system?

1.9.0

Please provide any additional information below.

Original issue reported on code.google.com by wuzuy...@gmail.com on 14 May 2013 at 3:52