[Rpcemu] RPCEmu 0.8.11
george.greenfield at tiscali.co.uk
Thu Oct 24 05:18:24 PDT 2013
In message <a0f19f9f53.pittdj+ at iyonix.home>
David Pitt <pittdj at pittdj.co.uk> wrote:
> In message <6d9d959f53.George at tiscali..co.uk>
> george greenfield <george.greenfield at tiscali.co.uk> wrote:
>> In message <mpro.mv61td00381ke03n2.pittdj at pittdj.co.uk>
>> David Pitt <pittdj at pittdj.co.uk> wrote:
>>> Peter Howkins, on 23 Oct, wrote:
> I have just tried a brief test or two but they don't really tell us
> much. The tests are !Desk_Bogo and Dhrystones.
> bogomips dhrystones
> Ubuntu 12.04 on VMware on an iMac, rpcemu 0.8.11
> Phoebe OS3.80 Interpreter 41 98,396
> SA110 OS5.21 Recompiler 117 481,463
> This is not like for like, no surprises, the Recompiler is a lot
> Mac OS X Mavericks, rpcemu 0.8.9
> SA110 OS5.21 Recompiler 159 627,746
ROMark scores c.610k dhrystone MIPs on my 0810/520 Recompiler
installation here, running on a Dell XPS 3.4GHz i7 Win7/64 platform.
> This is more interesting there is that much difference between the
> Virtual Machine and native installations.
> Mac OS X Mavericks, VRPC
> OS4.39 320 484,730
> There is the oft repeated story that !Desk_Bogo favours VRPC, but
> Dhrystones indicate rpcemu is faster.
Indeed: that suspicion is supported by Chris Hall's benchmarks here
where VRPC on a 2668MHz PC gives only 175% compared to a bog-standard
S/ARM RPC, i.e. 1524MHz = 100%; the corresponding figure for RPCEmu
here is approx. 1000MHz = 100%. Obviously that assumes a similar
processor type in the 2668MHz machine, which may not be the case.
> Raspberry Pi
> OS5.21 401 995,024
That's a very high dhrystone figure for a Pi: I got 450,080 when I
tested one recently.
> Emulators not too dusty then!
> Phoebe in hardware might have been a step forward but that might not
> apply to an emulation.
As Peter H has just explained.
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