Fully disable GC - no pauses - run with massive heap until outofmemory

[Y. Srinivas Ramakrishna]

Hello Anthony --

On 02/03/10 14:43, anthony.warden at nomura.com wrote:
> How best to do this please?
> 
> Command line options / hack the gc thread etc.

Shape the heap so as to give all (or most) of it to the young gen,
use no survivor spaces. For example, say you want a 32 G heap.
Let's give 4 M to the old gen may be. So you could do:-

   -Xmn32g -Xmx(32*1024+4)m -Xms(32*1204+4)m -XX:SurvivorRatio=1g

(of course you use the computed values of the expressions in parentheses above.)

Unfortunately, this will not give you an OOM when the heap gets
full. It'll trigger a scavenge. If you want to give up the ghost at
the first scavenge you can (if you are running on Solaris for example)
write a Dtrace script to detect the invocation of a GC and kill
the JVM process. Don't know if that's the behaviour you seek here.

-- ramki

> 
> 
> 
> ---------------------------------
> 
> 
> 
> This e-mail (including any attachments) is confidential, may contain
> proprietary or privileged information and is intended for the named
> recipient(s) only. Unintended recipients are prohibited from taking action
> on the basis of information in this e-mail and must delete all copies.
> Nomura will not accept responsibility or liability for the accuracy or
> completeness of, or the presence of any virus or disabling code in, this
> e-mail. If verification is sought please request a hard copy. Any reference
> to the terms of executed transactions should be treated as preliminary only
> and subject to formal written confirmation by Nomura. Nomura reserves the
> right to monitor e-mail communications through its networks (in accordance
> with applicable laws). No confidentiality or privilege is waived or lost by
> Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is
> a reference to any entity in the Nomura Holdings, Inc. group. Please read
> our Electronic Communications Legal Notice which forms part of this e-mail:
> http://www.Nomura.com/email_disclaimer.htm
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> hotspot-gc-use mailing list
> hotspot-gc-use at openjdk.java.net
> http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use

_______________________________________________
hotspot-gc-use mailing list
hotspot-gc-use at openjdk.java.net
http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use