Re: Where is the eln search path defined

[Alex Bennée]

Andrea Corallo <address@hidden> writes:

> Alex Bennée <address@hidden> writes:
>
>> Andrea Corallo <address@hidden> writes:
>>
>>> Alex Bennée <address@hidden> writes:
>>>
>>>> Andrea Corallo <address@hidden> writes:
>>>>
>>>>> Alex Bennée <address@hidden> writes:
>>>>>
>>>>>> Heh - so I patched pdumper to dump the variables at that point and
>>>>>> re-built:
>>>>>>
>>>>>>   dump_do_dump_relocation: installation_state:2  ivoncation_dir:
>>>>>>
>>>>>> and now the built emacs boots up fine. So I'm guessing there
>>>>>> must have been a stale pdumper.o that didn't get built for some reason.
>>>>>>
>>>>>> Sorry for the noise.
>>>>>
>>>>> Hi Alex,
>>>>>
>>>>> no issue.  Is very good somebody tests Aarch64, thanks for that!
>>>>
>>>> While on that subject is there any sort of benchmarking used to see if a
>>>> given arch is generating good code? Certainly on x86 I noticed a
>>>> speed-up in gnus but that is more subjective than objective.
>>>
>>> Hi Alex,
>>>
>>> I believe so far what we have is this:
>>>
>>> https://elpa.gnu.org/packages/elisp-benchmarks.html
>>>
>>> Note that you have to native compile by hand the tests because this
>>> package doesn't know about native compilation.
>>
>> I did C-h f elisp-benchmark-run and navigated to the file and executed
>> (native-compile (buffer-file-name)) and waited for it to dump the .eln
>> filename. The results don't seem that impressive so I don't know if I
>> did something wrong or if libgccjit is just being poor on Aarch64. The
>> machine is a TX1 so the individual cores aren't supper powerful anyway
>> but I was hoping for better:
>>
>> * Before Results (byte-compiled)
>>
>>   | test           | non-gc avg (s) | gc avg (s) | gcs avg | tot avg (s) | 
>> tot avg err (s) |
>>   
>> |----------------+----------------+------------+---------+-------------+-----------------|
>>   | bubble-no-cons |         217.03 |       0.00 |       0 |      217.03 |   
>>          2.66 |
>>   | bubble         |          91.18 |      53.77 |      68 |      144.95 |   
>>          3.37 |
>>   | dhrystone      |         289.30 |      85.21 |     106 |      374.51 |   
>>          3.80 |
>>   | fibn-rec       |         139.91 |       0.00 |       0 |      139.91 |   
>>          0.58 |
>>   | fibn-tc        |         164.23 |       0.00 |       0 |      164.23 |   
>>          4.53 |
>>   | fibn           |         189.61 |       0.00 |       0 |      189.61 |   
>>          2.42 |
>>   | inclist        |         281.67 |       0.00 |       0 |      281.67 |   
>>          5.13 |
>>   | listlen-tc     |         263.80 |       0.00 |       0 |      263.80 |   
>>         10.06 |
>>   | nbody          |          70.62 |      92.60 |     114 |      163.23 |   
>>          4.30 |
>>   | pidigits       |         180.40 |      64.86 |      62 |      245.26 |   
>>          3.08 |
>>   
>> |----------------+----------------+------------+---------+-------------+-----------------|
>>   | total          |        1887.75 |     296.44 |     350 |     2184.19 |   
>>         14.67 |
>>   |                |                |            |         |             |   
>>               |
>>
>> * After Results (native-compiled)
>>
>>   | test           | non-gc avg (s) | gc avg (s) | gcs avg | tot avg (s) | 
>> tot avg err (s) |
>>   
>> |----------------+----------------+------------+---------+-------------+-----------------|
>>   | bubble-no-cons |         206.13 |       0.00 |       0 |      206.13 |   
>>          4.67 |
>>   | bubble         |          88.84 |      48.20 |      65 |      137.05 |   
>>          0.73 |
>>   | dhrystone      |         301.94 |      75.30 |     102 |      377.24 |   
>>          4.91 |
>>   | fibn-rec       |         143.44 |       0.00 |       0 |      143.44 |   
>>          3.26 |
>>   | fibn-tc        |         165.60 |       0.00 |       0 |      165.60 |   
>>          1.99 |
>>   | fibn           |         186.95 |       0.00 |       0 |      186.95 |   
>>          6.08 |
>>   | inclist        |         270.98 |       0.00 |       0 |      270.98 |   
>>          1.57 |
>>   | listlen-tc     |         248.98 |       0.00 |       0 |      248.98 |   
>>          5.37 |
>>   | nbody          |          71.46 |      82.83 |     110 |      154.30 |   
>>          2.88 |
>>   | pidigits       |         192.83 |      61.80 |      59 |      254.63 |   
>>          2.56 |
>>   
>> |----------------+----------------+------------+---------+-------------+-----------------|
>>   | total          |        1877.15 |     268.14 |     336 |     2145.29 |   
>>         12.01 |
>>
>>
>> I guess it's time to start looking at the generated code?
>
> Hi Alex,
>
> I suspect for some reason we are looking at two byte compiled runs.

Ahh yes - all I managed to do was compile the main function as the
benchmarks themselves are in separate files.

> For
> One option to verify that is to hack a little the code or other option
> is to run this version instead:
>
> https://gitlab.com/koral/elisp-benchmarks
>
> I probably should update the official one to handle native compilation,
> haven't done it so far due to lack of time and because native
> compilation "officially" does not exists :)

Can it not be made to fail gracefully (and perhaps add the
interpreted/bytecode/compiled status to the output table?)

>
> Thanks
>
>   Andrea


-- 
Alex Bennée