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Date: Thu, 26 May 2011 16:09:33 -0400
Message-ID: <BANLkTim-syx0ybgdGyAcnZYYEbUJK2yzbA@mail.gmail.com>
Subject: Re: Forcing Cassandra to free up some space
From: Jeffrey Kesselman <jeffpk@gmail.com>
To: user@cassandra.apache.org
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Im sorry.  This was my business at Sun.  You are certainly wrong about
the Hotspot VM.

See this chapter of my book....

http://java.sun.com/docs/books/performance/1st_edition/html/JPAppGC.fm.html=
#998394

On Thu, May 26, 2011 at 3:53 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> It's a common misunderstanding that system.gc is only a suggestion; on
> any VM you're likely to run Cassandra on, System.gc will actually
> invoke a full collection.
>
> On Thu, May 26, 2011 at 2:18 PM, Jeffrey Kesselman <jeffpk@gmail.com> wro=
te:
>> Actually this is no gaurantee.=A0=A0 Its a common misunderstanding that
>> System.gc "forces" gc.=A0 It does not. It is a suggestion only. The vm a=
lways
>> has the option as to when and how much it gcs
>>
>> On May 26, 2011 2:51 PM, "Jonathan Ellis" <jbellis@gmail.com> wrote:
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>


--=20
It's always darkest just before you are eaten by a grue.