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Date: Tue, 9 Jun 2015 12:57:53 +0200
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 <CALY91SOspTSsOAOV+T6g2ObUJhwZdRjD+ibdS6W-rLxrFz4ruw@mail.gmail.com>
Subject: Re: How to minimize Cassandra memory usage for test environment?
From: horschi <horschi@gmail.com>
To: user@cassandra.apache.org
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Hi Eax,

are you truncating/dropping tables between tests? Are your issues perhaps
related to that?

If you are, you should disable autoSnapshots and enable -DunsafeSystem=true
to make it run smoother.

kind regards,
Christian

On Tue, Jun 9, 2015 at 11:25 AM, Jason Wee <peichieh@gmail.com> wrote:

> for a start, maybe you can see the setting use by raspberry pi project,
> for instance
> http://ac31004.blogspot.com/2012/05/apache-cassandra-on-raspberry-pi.html
>
> you can look at these two files, to tune down the settings for test
> environment.
> cassandra-env.sh
> cassandra.yaml
>
> hth
>
> jason
>
> On Tue, Jun 9, 2015 at 3:59 PM, Eax Melanhovich <mail@eax.me> wrote:
>
>> Hello.
>>
>> We are running integration tests, using real Cassandra (not a mock)
>> under Vagrant. MAX_HEAP_SIZE is set to 500M. As I discovered, lower
>> value causes 'out of memory' after some time.
>>
>> Could memory usage be decreased somehow? Developers don't usually have
>> a lot of free RAM and performance obviously is not an issue in this
>> case.
>>
>> --
>> Best regards,
>> Eax Melanhovich
>> http://eax.me/
>>
>
>

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<div dir=3D"ltr">Hi Eax,<div><br></div><div>are you truncating/dropping tab=
les between tests? Are your issues perhaps related to that?</div><div><br><=
/div><div>If you are, you should disable autoSnapshots and enable -DunsafeS=
ystem=3Dtrue to make it run smoother.<br></div><div><br></div><div>kind reg=
ards,</div><div>Christian</div></div><div class=3D"gmail_extra"><br><div cl=
ass=3D"gmail_quote">On Tue, Jun 9, 2015 at 11:25 AM, Jason Wee <span dir=3D=
"ltr">&lt;<a href=3D"mailto:peichieh@gmail.com" target=3D"_blank">peichieh@=
gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=
=3D"ltr">for a start, maybe you can see the setting use by raspberry pi pro=
ject, for instance=C2=A0<a href=3D"http://ac31004.blogspot.com/2012/05/apac=
he-cassandra-on-raspberry-pi.html" target=3D"_blank">http://ac31004.blogspo=
t.com/2012/05/apache-cassandra-on-raspberry-pi.html</a> =C2=A0<div>you can =
look at these two files, to tune down the settings for test environment.<br=
><div>cassandra-env.sh=C2=A0<div>cassandra.yaml</div></div></div><div><br><=
/div><div>hth</div><span class=3D"HOEnZb"><font color=3D"#888888"><div><br>=
</div><div>jason</div></font></span></div><div class=3D"HOEnZb"><div class=
=3D"h5"><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, J=
un 9, 2015 at 3:59 PM, Eax Melanhovich <span dir=3D"ltr">&lt;<a href=3D"mai=
lto:mail@eax.me" target=3D"_blank">mail@eax.me</a>&gt;</span> wrote:<br><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #=
ccc solid;padding-left:1ex">Hello.<br>
<br>
We are running integration tests, using real Cassandra (not a mock)<br>
under Vagrant. MAX_HEAP_SIZE is set to 500M. As I discovered, lower<br>
value causes &#39;out of memory&#39; after some time.<br>
<br>
Could memory usage be decreased somehow? Developers don&#39;t usually have<=
br>
a lot of free RAM and performance obviously is not an issue in this<br>
case.<br>
<span><font color=3D"#888888"><br>
--<br>
Best regards,<br>
Eax Melanhovich<br>
<a href=3D"http://eax.me/" target=3D"_blank">http://eax.me/</a><br>
</font></span></blockquote></div><br></div>
</div></div></blockquote></div><br></div>

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