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Date: Tue, 8 Mar 2011 00:21:14 +0300
Message-ID: <AANLkTinwXUh6TVh5wVrAkHwyG=2g81FNSYa_oiPywy0b@mail.gmail.com>
Subject: Re: Nodes frozen in GC
From: ruslan usifov <ruslan.usifov@gmail.com>
To: user@cassandra.apache.org
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Hello thanks for reply

2011/3/7 Aaron Morton <aaron@thelastpickle.com>

> It's always possible to run out of memory. Can you provide...
>
> - number cf's and their Memtable settings
>
1 CF with memtable 64MB, other settings as default


> - any row or key cache settings
>
Its stay default e.g 200000, but i don't do any read, only writes


> - any other buffer or memory settings you may have changed in
> Cassandra.yaml.
>
I change only binary_memtable_throughput_in_mb setting, and set it to 64MB


> - what load you are putting on the cluster, e.g. Inserting x rows/columns
> per second with avg size y
>
>
> I do bulk load of real data into cluster. In may case this do in 16 threads
(8 process / per machine, on two machines), with avg insert speed 1000 per
second per thread, so total is 16000 rows per second, with avg size of row
573 bytes

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Hello thanks for reply<br><br><div class=3D"gmail_quote">2011/3/7 Aaron Mor=
ton <span dir=3D"ltr">&lt;<a href=3D"mailto:aaron@thelastpickle.com">aaron@=
thelastpickle.com</a>&gt;</span><br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div bgcolor=3D"#FFFFFF"><div>It&#39;s always possible to run out of memory=
. Can you provide...</div><div><br></div><div>- number cf&#39;s and their M=
emtable settings</div></div></blockquote><div>1 CF with memtable 64MB, othe=
r settings as default<br>
<br>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt=
 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div=
 bgcolor=3D"#FFFFFF"><div>- any row or key cache settings</div></div></bloc=
kquote>
<div>Its stay default e.g 200000, but i don&#39;t do any read, only writes<=
br><br>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt =
0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><=
div bgcolor=3D"#FFFFFF">
<div>- any other buffer or memory settings you may have changed in Cassandr=
a.yaml.</div></div></blockquote><div>I change only binary_memtable_throughp=
ut_in_mb setting, and set it to 64MB<br><br><br>=A0</div><blockquote class=
=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid=
 rgb(204, 204, 204); padding-left: 1ex;">
<div bgcolor=3D"#FFFFFF"><div>- what load you are putting on the cluster, e=
.g. Inserting x rows/columns per second with avg size y</div><div><br></div=
><br></div></blockquote></div>I do bulk load of real data into cluster. In =
may case this do in 16 threads (8 process / per machine, on two machines), =
with avg insert speed 1000 per second per thread, so total is 16000 rows pe=
r second, with avg size of row 573 bytes<br>

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