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From: Vladislav Pyatkov <vldpyatkov@gmail.com>
Date: Thu, 16 Jun 2016 18:58:01 +0300
Message-ID: <CADez4_XyoVy0p=rcUvy+=iMu_+d86oyjJb6WHkOt1wKe1RUX7g@mail.gmail.com>
Subject: Re: Ignite performance improvements
To: user@ignite.apache.org
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archived-at: Thu, 16 Jun 2016 15:58:07 -0000

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Hello,

Growth loading CPU to 90% may caused by work of GC. For determine this you
can get log and analyze log of GC [1]. Also you can use Unix utility for
detection causes like dstat or top.

In further 50% CPU usage is maybe normal for your case (transaction
OPTIMISTIC, READ _COMMITED). You can try to use OPTIMISTIC, SERIALIZABLE
transaction, and retry if catch TransactionOptimisticException[2].

[1]: https://apacheignite.readme.io/docs/jvm-and-system-tuning
[2]: https://apacheignite.readme.io/docs/transactions

On Thu, Jun 16, 2016 at 2:06 PM, amitpa <amitpa@nrifintech.com> wrote:

> My transaction attributes now are OPTIMISTIC, READ _COMMITED.
>
> Avoided Transaction with the same key.
>
> Also when there is a lot of data Ignite seems to slow down due to Cache put
> and get delays. I see the CPU load increases to 90%. is this due to
> resizing
> the cache? How can I optimize that?
>
> Lastly my CPU load is less than 50% when the transactions takes place (4000
> TPS).
>
> My Access point can take in 1 million per second so its not a bottleneck.
> I
> am expecting more than 5000 and for transactions to scale as I keep adding
> nodes.
>
>
>
>
>
>
> --
> View this message in context:
> http://apache-ignite-users.70518.x6.nabble.com/Ignite-performance-improvements-tp5623p5680.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>


-- 
Vladislav Pyatkov

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<div dir=3D"ltr"><div>Hello,</div><div><br></div><div>Growth loading CPU to=
 90% may caused by work of GC. For determine this you can get log and analy=
ze log of GC [1]. Also you can use Unix utility for detection causes like d=
stat or top.</div><div><br></div><div>In further 50% CPU usage is maybe nor=
mal for your case (transaction OPTIMISTIC, READ _COMMITED). You can try to =
use OPTIMISTIC, SERIALIZABLE transaction, and retry if catch TransactionOpt=
imisticException[2].</div><div><br></div><div>[1]:=C2=A0<a href=3D"https://=
apacheignite.readme.io/docs/jvm-and-system-tuning">https://apacheignite.rea=
dme.io/docs/jvm-and-system-tuning</a></div><div>[2]:=C2=A0<a href=3D"https:=
//apacheignite.readme.io/docs/transactions">https://apacheignite.readme.io/=
docs/transactions</a></div></div><div class=3D"gmail_extra"><br><div class=
=3D"gmail_quote">On Thu, Jun 16, 2016 at 2:06 PM, amitpa <span dir=3D"ltr">=
&lt;<a href=3D"mailto:amitpa@nrifintech.com" target=3D"_blank">amitpa@nrifi=
ntech.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">My trans=
action attributes now are OPTIMISTIC, READ _COMMITED.<br>
<br>
Avoided Transaction with the same key.<br>
<br>
Also when there is a lot of data Ignite seems to slow down due to Cache put=
<br>
and get delays. I see the CPU load increases to 90%. is this due to resizin=
g<br>
the cache? How can I optimize that?<br>
<br>
Lastly my CPU load is less than 50% when the transactions takes place (4000=
<br>
TPS).<br>
<br>
My Access point can take in 1 million per second so its not a bottleneck.=
=C2=A0 I<br>
am expecting more than 5000 and for transactions to scale as I keep adding<=
br>
nodes.<br>
<br>
<br>
<br>
<br>
<br>
<br>
--<br>
View this message in context: <a href=3D"http://apache-ignite-users.70518.x=
6.nabble.com/Ignite-performance-improvements-tp5623p5680.html" rel=3D"noref=
errer" target=3D"_blank">http://apache-ignite-users.70518.x6.nabble.com/Ign=
ite-performance-improvements-tp5623p5680.html</a><br>
<div class=3D"HOEnZb"><div class=3D"h5">Sent from the Apache Ignite Users m=
ailing list archive at Nabble.com.<br>
</div></div></blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>=
<div class=3D"gmail_signature" data-smartmail=3D"gmail_signature">Vladislav=
 Pyatkov</div>
</div>

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