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- Subject: Re: Lua 5.1 (work0) -- 1st torture test
- From: Taj Khattra <taj.khattra@...>
- Date: Thu, 25 Mar 2004 21:28:38 -0800
> Well, I tried a simple test, but lua complained -- I think the arguments
> to collectgarbage need to be ints rather than strings!
are you sure you're using 5.1-work - it seems like you may
be using 5.0 instead ?
tmp> /usr/local/src/lua/lua-5.0.2/bin/lua myers
/usr/local/src/lua/lua-5.0.2/bin/lua: myers:8: bad argument #1 to `collectgarbage' (number expected, got string)
[C]: in function `collectgarbage'
myers:8: in main chunk
tmp> /usr/local/src/lua/lua-5.1-work0/bin/lua myers
at n = 1000 count garbage: 28
at n = 2000 count garbage: 27
at n = 3000 count garbage: 29
at n = 4000 count garbage: 34
you could use print(_VERSION) to confirm the version:
tmp> lua -e 'print(_VERSION)'
Lua 5.1 (work)
> Anyway, I found it started quite spritely but, now at n = 296000 it's very
> slow (99.1% cpu according to top).
i think that is expected because the loops are moving a lot of data
and creating lots of garbage as n gets bigger.
section 11.6 of Roberto's book explains why in more detail.
it has also been discussed on this mailing list in the past: