Re: Data-dependent slowdown in loop involving io.lines()
- From: Mike Pall <mike-1411@xxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Fri, 7 Nov 2014 13:18:58 +0100
Tudor Bosman wrote:
> I suspect this has something to do with the way strings are hashed, but I
> haven't dug any deeper.
A sparse hash inevitably shows worst case behavior like this. It's
just a matter of trying hard enough to find such an example (with
either Lua or LuaJIT).
Lua doesn't make a distinction between symbols and strings, which
makes it rather difficult to fully cater for the typical needs of
both types (which are quite different).
--Mike
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