[hibernate-dev] Bad boot performance since 5.4 switched to ByteBuddy

[Scott Marlow]

On Tue, Aug 4, 2020, 11:27 AM Christian Beikov <christian.beikov at gmail.com>
wrote:

> I'm moving this discussion from Zulip to the mailing list as Rafael does
> not seem to be on Zulip.


Try to ping him on Twitter then with a link to this email thread.  Ask him
what your options are to improve proxy generation performance.

See comment below also.

Here a little context:
>
>  > Does anyone know if there is a known performance issue with Bytebuddy
> during boot in 5.4? I noticed that 5.4 takes about 25%, sometimes up to
> 30% percent longer to boot, even when using a prebuilt Jandex index,
> apparently due to the use of Bytebuddy
>
>  > @Moritz Becker found the issue while trying to find out why our
> Blaze-Persistence testsuite runs into CI timeouts with 5.4 but not with 5.3
>
>  > So AFAIK, the PojoEntityTuplizer builds the proxy class through
> org.hibernate.proxy.pojo.bytebuddy.ByteBuddyProxyHelper#buildProxy which
> takes significantly longer than the javassist implementation
>

Have you tried using ByteBuddy ASM API directly to see if that is
significantly faster to build the proxy?

Scott


> I haven't tried it yet, but it seems to me that making the
> byteBuddyState in
> org.hibernate.bytecode.internal.bytebuddy.BytecodeProviderImpl static
> might help. I'd guess this will help with the test execution time for
> the Hibernate testsuite as well.
>
> Any idea how to improve this @Rafael ?
>
> Regards,
>
> Christian
>
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