No subject


Thu Mar 14 15:04:54 GMT 2013


http://www.rabbitmq.com/memory.html


On Wed, Oct 16, 2013 at 3:43 PM, Chris Nicel <Chris.Nicel at 15below.com>wrote:

>  Hi All.****
>
> ** **
>
> I would like to know more about the decision to default the memory high
> watermark to 40% of the installed RAM. Is this designed for use on a server
> with contended resources? If the server is dedicated to running RabbitMQ
> can this be raised to say 80% or 90% safely? ****
>
> ** **
>
> RabbitMQ: 3.1.5****
>
> Erlang: 16B02****
>
> Linux Distro: Ubuntu 12.04LTS****
>
> ** **
>
> Thanks in advance.****
>
> ** **
>
> *Chris Nicel*
>
> Senior Systems Engineer****
>
> 15below ltd : 15below Australia pty. ltd.****
>
> ** **
>
> *t:**        *+44 1273 764230****
>
> *e*:       chris.nicel at 15below.com
> *w:*      15below.com <http://www.15below.com/>****
>
> **[image: *]    **   @15below_travel<https://twitter.com/#!/15below_travel>
> ****
>
> ** **
>
> 15below Limited: Company registered in England and Wales No 3945289
> Registered Office: Lyndean House, 43-46 Queens Road, Brighton BN1 3XB,
> United Kingdom
>
> 15below Australia Pty Limited: ABN 25 132 716 379
> Level 21, Tower 2 Darling Park, 201 Sussex Street, Sydney, NSW 2000,
> Australia
>
> Please think about the environment before printing this email.
>
> ************************************************************************
> This email and any attachments may be confidential and/or legally
> privileged and are solely for the use of the intended recipient. If you
> have received this email in error please contact the sender. Any views or
> opinions expressed within this e-mail are solely those of the sender, and
> do not necessarily represent those of 15below unless otherwise specifically
> stated. Although 15below has taken every reasonable precaution to ensure
> that any attachment to this e-mail has been checked for viruses, it is
> strongly recommended that you carry out your own virus check before opening
> any attachment, as we cannot accept liability for any damage sustained as a
> result of software virus infection.
>
> _______________________________________________
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>
>


-- 
----
Duncan McIntyre
Senior Consultant
dmcintyre at gopivotal.com
+44 7917 580 118

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<div dir=3D"ltr">Because of this:<div><br></div><div><span style=3D"color:r=
gb(85,85,85);font-family:Verdana,sans-serif;font-size:13px;line-height:18px=
">The default memory threshold is set to 40% of installed RAM. Note that th=
is does not prevent the RabbitMQ server from using more than 40%, it is mer=
ely the point at which publishers are throttled. Erlang&#39;s garbage colle=
ctor can, in the worst case, cause double the amount of memory to be used (=
by default, 80% of RAM). It is strongly recommended that OS swap or page fi=
les are enabled.</span><br>
</div><div><span style=3D"color:rgb(85,85,85);font-family:Verdana,sans-seri=
f;font-size:13px;line-height:18px"><br></span></div><div><span style=3D"col=
or:rgb(85,85,85);font-family:Verdana,sans-serif;font-size:13px;line-height:=
18px">From here:</span></div>
<div><span style=3D"color:rgb(85,85,85);font-family:Verdana,sans-serif;font=
-size:13px;line-height:18px"><br></span></div><div><font color=3D"#555555" =
face=3D"Verdana, sans-serif"><span style=3D"line-height:17.99715805053711px=
"><a href=3D"http://www.rabbitmq.com/memory.html">http://www.rabbitmq.com/m=
emory.html</a></span></font><br>
</div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">O=
n Wed, Oct 16, 2013 at 3:43 PM, Chris Nicel <span dir=3D"ltr">&lt;<a href=
=3D"mailto:Chris.Nicel at 15below.com" target=3D"_blank">Chris.Nicel at 15below.c=
om</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">





<div lang=3D"EN-GB" link=3D"blue" vlink=3D"purple">
<div>
<p class=3D"MsoNormal">Hi All.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=A0<u></u></p>
<p class=3D"MsoNormal">I would like to know more about the decision to defa=
ult the memory high watermark to 40% of the installed RAM. Is this designed=
 for use on a server with contended resources? If the server is dedicated t=
o running RabbitMQ can this be raised
 to say 80% or 90% safely? <u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=A0<u></u></p>
<p class=3D"MsoNormal">RabbitMQ: 3.1.5<u></u><u></u></p>
<p class=3D"MsoNormal">Erlang: 16B02<u></u><u></u></p>
<p class=3D"MsoNormal">Linux Distro: Ubuntu 12.04LTS<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=A0<u></u></p>
<p class=3D"MsoNormal">Thanks in advance.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=A0<u></u></p>
<p class=3D"MsoNormal"><b><span style=3D"color:#1f497d">Chris Nicel<u></u><=
u></u></span></b></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">Senior Systems Enginee=
r<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">15below ltd : 15below =
Australia pty. ltd.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><b><span style=3D"color:#bfbfbf">t:</span></b><b><sp=
an style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=A0
</span></b><span style=3D"color:#1f497d"><a href=3D"tel:%2B44%201273%207642=
30" value=3D"+441273764230" target=3D"_blank">+44 1273 764230</a><u></u><u>=
</u></span></p>
<p class=3D"MsoNormal"><b><span style=3D"color:#bfbfbf">e</span></b><span s=
tyle=3D"color:#bfbfbf">:=A0=A0=A0=A0=A0=A0
</span><span style=3D"color:#1f497d"><a href=3D"mailto:chris.nicel at 15below.=
com" target=3D"_blank"><span style=3D"color:blue">chris.nicel at 15below.com</=
span></a><br>
</span><b><span style=3D"color:#bfbfbf">w:</span></b><span style=3D"color:#=
1f497d">=A0=A0=A0=A0=A0
<a href=3D"http://www.15below.com/" target=3D"_blank"><span style=3D"color:=
blue">15below.com</span></a><u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:18.0pt">
<u></u><span lang=3D"EN-US" style=3D"font-family:Symbol;color:#1f497d"><spa=
n><img width=3D"16" height=3D"12" src=3D"cid:image001.png at 01CECA86.6C4BD2E0=
" alt=3D"*"><span style=3D"font:7.0pt &quot;Times New Roman&quot;">=A0=A0=
=A0
</span></span></span><u></u><span lang=3D"EN-US" style=3D"color:#1f497d">=
=A0=A0=A0<a href=3D"https://twitter.com/#!/15below_travel" target=3D"_blank=
"><span style=3D"color:blue">@15below_travel</span></a><u></u><u></u></span=
></p>
<p class=3D"MsoNormal"><u></u>=A0<u></u></p>
</div>
<br>
<font face=3D"Arial" color=3D"Black" size=3D"3">15below Limited: Company re=
gistered in England and Wales No 3945289<br>
Registered Office: Lyndean House, 43-46 Queens Road, Brighton BN1 3XB, Unit=
ed Kingdom<br>
<br>
15below Australia Pty Limited: ABN 25 132 716 379<br>
Level 21, Tower 2 Darling Park, 201 Sussex Street, Sydney, NSW 2000, Austra=
lia<br>
<br>
Please think about the environment before printing this email.<br>
<br>
************************************************************************<br=
>
This email and any attachments may be confidential and/or legally privilege=
d and are solely for the use of the intended recipient. If you have receive=
d this email in error please contact the sender. Any views or opinions expr=
essed within this e-mail are solely
 those of the sender, and do not necessarily represent those of 15below unl=
ess otherwise specifically stated. Although 15below has taken every reasona=
ble precaution to ensure that any attachment to this e-mail has been checke=
d for viruses, it is strongly recommended
 that you carry out your own virus check before opening any attachment, as =
we cannot accept liability for any damage sustained as a result of software=
 virus infection.<br>
</font>
</div>

<br>_______________________________________________<br>
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ts.rabbitmq.com</a><br>
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/rabbitmq-discuss</a><br>
<br></blockquote></div><br><br clear=3D"all"><div><br></div>-- <br><div>---=
-</div>Duncan McIntyre<div>Senior Consultant</div><div><a href=3D"mailto:dm=
cintyre at gopivotal.com" target=3D"_blank">dmcintyre at gopivotal.com</a></div><=
div>
+44 7917 580 118</div>
</div>

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