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Date: Sun, 24 Nov 2013 20:40:40 +0200
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 <CAM_4j5dyfbbAyXEP=P5rHJgZgdc7J99NjAgjp-O=FL4-9eR64g@mail.gmail.com>
Subject: Re: Multiples queue consumers in a quorum reduces the throughput
From: Sznajder ForMailingList <bs4mailinglist@gmail.com>
To: "user@curator.incubator.apache.org" <user@curator.incubator.apache.org>
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Please ignore this duplicate mail

Benjamin


On Sun, Nov 24, 2013 at 6:51 PM, Sznajder ForMailingList <
bs4mailinglist@gmail.com> wrote:

> Hi
>
> A parallel problem to the problem I described earlier in this list is a
> following:
>
> The parameters are still the same:
>
> - I have a producer who produces items in the queue (integer). The
> producer adds some items when the queue is half of its initial size.
>
> - The consumer just picks the item and write to a log file and goes to
> sleep a while...
>
>
> When I define a chorum of 2 machines - One producer, and one consumer, I
> consume 1320 items in 5 minutes.
>
> When I define a quorum of 3 machines - One producer and two consumers, I
> consume 2693 items in 5 minutes (expected!)
>
> When I define a quorum of 4 machines - One producer and three consumers, I
> suddenly, consume only 1975 items in 5 minutes!! (Even less than the
> precedent configuration!!)
>
> I would thank you for your help/. This issue is relatively urgent for me..
>
> Best regards
> Benjamin
>

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Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Please ignore this duplicate mail<br><br></div>Benjam=
in<br></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">O=
n Sun, Nov 24, 2013 at 6:51 PM, Sznajder ForMailingList <span dir=3D"ltr">&=
lt;<a href=3D"mailto:bs4mailinglist@gmail.com" target=3D"_blank">bs4mailing=
list@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"><div dir=3D"ltr"><div><div><div><div><div><d=
iv>Hi<br><br></div>A parallel problem to the problem I described earlier in=
 this list is a following:<br>
<br></div>The parameters are still the same:<br><br></div>- I have a produc=
er who produces items in the queue (integer). The producer adds some items =
when the queue is half of its initial size.<br>
<br></div>- The consumer just picks the item and write to a log file and go=
es to sleep a while...<br><br><br></div>When I define a chorum of 2 machine=
s - One producer, and one consumer, I consume 1320 items in 5 minutes.<br>

<br></div>When I define a quorum of 3 machines - One producer and two consu=
mers, I consume 2693 items in 5 minutes (expected!)<br><br>When I define a =
quorum of 4 machines - One producer and three consumers, I suddenly, consum=
e only 1975 items in 5 minutes!! (Even less than the precedent configuratio=
n!!)<br>

<br>I would thank you for your help/. This issue is relatively urgent for m=
e..<br><br>Best regards<br>Benjamin<br></div>
</blockquote></div><br></div>

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