Re: [rvm-research] Xmx Option in Jikes

On 5/21/2018 1:12 PM, Khaled Z Mahmoud wrote:
> Here is the command I tried
> 
> sudo ./dist/FullAdaptiveMarkSweep_x86_64-linux/rvm "-X:perf:frequency=7500" "-X:perf:enabled=true" 
> "-X:perf:counters=PAPI_SR_INS,PAPI_TOT_CYC,PAPI_TOT_INS" "-X:perf:package_counters=PAPI_L3_TCM" 
> "-X:perf:accumulate=true" "-*Xmx20480M*"  cache_misses
> 
> *Error Message*: vm: "-Xmx20480M" is not a recognized Jikes RVM command line argument.
> 
> I also tried "-X:Xmx20480M" and "-X:Xmx=20480: and still same error message

Well, -Xmx... is standard, but some variants I might try (without referring to the
code base :-) ) include:

-Xmx20480m    (lower case m; Oracle accepts m or M, but not sure about JikesRVM)
-X:mx20480m   (colon separating X and mx)
-X:mx:20480m  (... plus colon separating mx and the argument)

... and maybe even without the m/M at the end (numeric argument might mean
meagbytes anyway), though that seems doubtful to me.

I might also try putting it before the -X:perf:... flags.  Perhaps order matters.

Can you get your rvm to print out the options it accepts?

Lastly, this really better be a 64-bit build, or 20 Gb will exceed the address space!

Regards - Eliot Moss

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Jikesrvm-researchers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/jikesrvm-researchers