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Date: Fri, 1 Aug 2014 16:50:04 -0700
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 <CAC6YYri2CiJ2TjbhX6btapPo8EwXmGn875kVPpLjOsWFgfucKA@mail.gmail.com>
Subject: Re: Performance on Widows vs *NIX
From: Roshan Naik <roshan@hortonworks.com>
To: "user@flume.apache.org" <user@flume.apache.org>
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Is that a custom Flume build or from some distro ? Hard to say without
additional info. anything interesting in  the logs when it crashes ?


On Tue, Jul 29, 2014 at 10:15 AM, Christopher Shannon <cshannon108@gmail.com
> wrote:

> For development and testing, I sometimes have to run multiple agents on
> the same server / workstation. Recently I had to load test a second agent
> in a Windows environment with a near identical configuration (except for
> paths and more memory allocated to the JVM), but the agent in the second
> JVM soon ground to a halt whereas the first JVM with less memory worked
> without slowdown.
>
> The total physicsl memory on the machine is 32 gb, and the total physical
> RAM used never exceds 14GB. Disk space is plentiful. Agent A (started
> first) has a max JVM heap space of 4 gb, the second JVM (Agent B) has 8 gb
> allocated. Both use a spooling file source, a memory channel, and an Avro
> sink.
>
> Yet agent B is the one that slows down and evetually hangs. I have stood
> up multiple Flume agents on Linux without this problem.
>
> What could account for the degrading performance in a Windows environment
> for the second agent but not the first?
>
> All the best, Chris
>
> p.s. The agent version is 1.3.0, and I can't change it for contractual
> reasons.
>

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<div dir=3D"ltr">Is that a custom Flume build or from some distro ? Hard to=
 say without additional info. anything interesting in =C2=A0the logs when i=
t crashes ?</div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quo=
te">On Tue, Jul 29, 2014 at 10:15 AM, Christopher Shannon <span dir=3D"ltr"=
>&lt;<a href=3D"mailto:cshannon108@gmail.com" target=3D"_blank">cshannon108=
@gmail.com</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"><p dir=3D"ltr">For development and testing, =
I sometimes have to run multiple agents on the same server / workstation. R=
ecently I had to load test a second agent in a Windows environment with a n=
ear identical configuration (except for paths and more memory allocated to =
the JVM), but the agent in the second JVM soon ground to a halt whereas the=
 first JVM with less memory worked without slowdown.</p>


<p dir=3D"ltr">The total physicsl memory on the machine is 32 gb, and the t=
otal physical RAM used never exceds 14GB. Disk space is plentiful. Agent A =
(started first) has a max JVM heap space of 4 gb, the second JVM (Agent B) =
has 8 gb allocated. Both use a spooling file source, a memory channel, and =
an Avro sink.</p>


<p dir=3D"ltr">Yet agent B is the one that slows down and evetually hangs. =
I have stood up multiple Flume agents on Linux without this problem. </p>
<p dir=3D"ltr">What could account for the degrading performance in a Window=
s environment for the second agent but not the first?</p>
<p dir=3D"ltr">All the best, Chris</p>
<p dir=3D"ltr">p.s. The agent version is 1.3.0, and I can&#39;t change it f=
or contractual reasons.</p>
</blockquote></div><br></div>

<br>
<span style=3D"color:rgb(128,128,128);font-family:Arial,sans-serif;font-siz=
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nt-family:Arial,sans-serif;font-size:10px"><span style=3D"color:rgb(128,128=
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 disclosure under applicable law. If the reader of this message is not the =
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semination, distribution, disclosure or forwarding of this communication is=
 strictly prohibited. If you have received this communication in error, ple=
ase contact the sender immediately and delete it from your system. Thank Yo=
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