Re: time to create / memory footprint of VM
- From: Mike Pall <mike-1207@xxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Sun, 15 Jul 2012 13:47:35 +0200
Tobias Oberstein wrote:
> Could someone give me a rough estimate on
>
> - time it takes to instantiate a new VM
2 microseconds for lua_open() (no libraries)
30 microseconds for lua_open() + luaL_newstate() (with all default libs)
(On Linux/x64 at 3 GHz)
You can cut down on the overhead if you don't need all libraries.
> - the minimal memory footprint of a newly created VM instance
8 KB without any libraries
23 KB with all libraries
That's the minimum footprint with a shared allocator across all
instances (i.e. the system allocator, not the builtin one).
> Say I have a process creating 10k VMs. How long will it take, how
> much memory consume?
That's not a useful scale for VM instances. Use one VM for each
thread and divide them up with coroutines. Each coroutines needs
only around 400 bytes, including a minimal stack.
--Mike
Other related posts:
