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Posted to dev@harmony.apache.org by Aleksey Shipilev <al...@gmail.com> on 2008/04/10 11:08:20 UTC

Re: [drlvm][jni][performance] JNI improvements

[Charging... Clear... *ZAP*]

Colleagues,

I had updated JNI transition optimization umbrella issue [1] with
distribution of clean/dirty patches. There are 2 issues ready for
commit, can some VM guru review them and commit?

Thanks,
Aleksey.

[1] https://issues.apache.org/jira/browse/HARMONY-4704

On Sun, Jan 27, 2008 at 12:34 AM, Aleksey Shipilev
<al...@gmail.com> wrote:
> [reviving thread]
>
>  Hi, all!
>
>  During profiling of some native-intensive workload I had noticed the
>  whole bunch of JNI-related methods are hot on VM side.
>
>  These include:
>   jthread_get_vm_thread_ptr_stub
>   exn_raised
>   m2n_pop_local_handles
>   free_local_object_handles2
>   oh_allocate_handle
>   m2n_get_last_frame
>   oh_allocate_local_handle_internal
>
>  I had remembered I had filed a bunch of experimental JNI improvements
>  for Harmony [1]. Sure, some of them are dirty and not intended for
>  inclusion, but at least one [2] is worth commiting, it will solve the
>  problem with calling "get TLS" method during JNI transition.
>
>  Can VM gurus have an input here? Any objections?
>
>  Thanks,
>  Aleksey.
>
>  [1] https://issues.apache.org/jira/browse/HARMONY-4704
>  [2] https://issues.apache.org/jira/browse/HARMONY-4705
>

Re: [drlvm][jni][performance] JNI improvements

Posted by Aleksey Shipilev <al...@gmail.com>.

Thanks, Gregory!

It appears that only this issue can be committed, while another one
[1] is already in trunk.
So after committing HARMONY-4705 no more attention is needed at the moment.

Thanks,
Aleksey.

[1] https://issues.apache.org/jira/browse/HARMONY-4811

On Thu, Apr 10, 2008 at 3:49 PM, Gregory Shimansky
<gs...@apache.org> wrote:
> Aleksey Shipilev said the following on 10.04.2008 13:08:
>
>
> > [Charging... Clear... *ZAP*]
> >
> > Colleagues,
> >
> > I had updated JNI transition optimization umbrella issue [1] with
> > distribution of clean/dirty patches. There are 2 issues ready for
> > commit, can some VM guru review them and commit?
> >
>
>  I am going to take care of HARMONY-4705.

Re: [drlvm][jni][performance] JNI improvements

Posted by Gregory Shimansky <gs...@apache.org>.

Aleksey Shipilev said the following on 10.04.2008 13:08:
> [Charging... Clear... *ZAP*]
> 
> Colleagues,
> 
> I had updated JNI transition optimization umbrella issue [1] with
> distribution of clean/dirty patches. There are 2 issues ready for
> commit, can some VM guru review them and commit?

I am going to take care of HARMONY-4705.

> [1] https://issues.apache.org/jira/browse/HARMONY-4704
> 
> On Sun, Jan 27, 2008 at 12:34 AM, Aleksey Shipilev
> <al...@gmail.com> wrote:
>> [reviving thread]
>>
>>  Hi, all!
>>
>>  During profiling of some native-intensive workload I had noticed the
>>  whole bunch of JNI-related methods are hot on VM side.
>>
>>  These include:
>>   jthread_get_vm_thread_ptr_stub
>>   exn_raised
>>   m2n_pop_local_handles
>>   free_local_object_handles2
>>   oh_allocate_handle
>>   m2n_get_last_frame
>>   oh_allocate_local_handle_internal
>>
>>  I had remembered I had filed a bunch of experimental JNI improvements
>>  for Harmony [1]. Sure, some of them are dirty and not intended for
>>  inclusion, but at least one [2] is worth commiting, it will solve the
>>  problem with calling "get TLS" method during JNI transition.
>>
>>  Can VM gurus have an input here? Any objections?
>>
>>  Thanks,
>>  Aleksey.
>>
>>  [1] https://issues.apache.org/jira/browse/HARMONY-4704
>>  [2] https://issues.apache.org/jira/browse/HARMONY-4705
>>


-- 
Gregory