Mailing-List: contact users-help@openjpa.apache.org; run by ezmlm
Precedence: bulk
Reply-To: users@openjpa.apache.org
Received-SPF: pass (athena.apache.org: domain of aron@cambridgesemantics.com
 designates 64.79.83.75 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws; d=cambridgesemantics.com; h=
	message-id:date:from:mime-version:to:subject:content-type:
	content-transfer-encoding; q=dns; s=dkim; b=I/QHdPzM9xXZL9Lj3aB9
	e4QynqRfOSdUcm9k/QbU2wGyJoM0sNLG7WKel8M5vbS8yQ0XaYoz3sCdNocY/WeL
	l2534jpOWx0uf8cG5z8ZpxeB7hNNWETVBhdS/R+Jqu2SljyWsGlIyWZb67R091tQ
	A9I8DzEB5udouKA9GG5hcDE=
Message-ID: <4DF773FE.4080902@cambridgesemantics.com>
Date: Tue, 14 Jun 2011 10:45:18 -0400
From: Aron Lurie <aron@cambridgesemantics.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US;
 rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
MIME-Version: 1.0
To: users@openjpa.apache.org
Subject: Speeding up commit
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Hello,
I have a situation where I am trying to persist ~2500 objects all at 
once. After the objects are persisted, the program ends, so there is no 
need for any functionality after the objects have been persisted. I am 
just trying to dump these objects to the DB as fast as possible.

Using Eclipse's TPTP profiler, I have timed the EntityManager.commit() 
operation to take 586 seconds. Of that, cumulatively almost 455 seconds 
are spent inside of ~2500 calls to StateManagerImpl.proxyFields(bool, 
bool). From the point that I start commit(), those 2nd class objects are 
not mutated by my program, and I do not need to use any of these objects 
after commit() finishes. From what I have read, it would seem that I 
have no need for my objects to be proxied, and from my tests, it seems 
that removing proxies would speed things up significantly. Am I missing 
something? Or is there a way to turn off proxies? And if not, how can I 
speed up the proxying operation?

Thanks,
Aron