High CPU usage of elasticsearch

Hi,

I am new to elasticsearch and logstash.
using elasticsearch-1.1.1 and logstash-1.4.2-1 with Kibana.
Its a single node with 4 vCPU and 30GB of physical memory.

Currently logstash (single node) receive logs from 40 jboss servers.

Most of the time elasticsearch use almost all the CPU resource.
Is there any way I can limit the CPU consumption by tuning?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12216 elastics 20 0 514g 19g 3.6g S 389.8 63.5 3224:32 /usr/bin/java
-Xms15g -Xmx15g -Xss256k -Djava.awt.headles
11722 logstash 39 19 3443m 1.2g 6496 S 8.6 3.9 2037:27 /usr/bin/java
-Djava.io.tmpdir=/var/lib/logstash -Xmx1g -X

Any recommendations?

I already followed following article.

Appreciate your help.

Thanks,
Danishka

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How much data do you have on the node? How many indexes? Have you checked
the logs for GC issues?

You can use nice on the OS level to manage CPU use, but it's not a good
idea, and instead you should figure out why ES is using that CPU.

On 2 January 2015 at 05:09, Danishka Navin danishka@gmail.com wrote:

Hi,

I am new to elasticsearch and logstash.
using elasticsearch-1.1.1 and logstash-1.4.2-1 with Kibana.
Its a single node with 4 vCPU and 30GB of physical memory.

Currently logstash (single node) receive logs from 40 jboss servers.

Most of the time elasticsearch use almost all the CPU resource.
Is there any way I can limit the CPU consumption by tuning?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12216 elastics 20 0 514g 19g 3.6g S 389.8 63.5 3224:32
/usr/bin/java -Xms15g -Xmx15g -Xss256k -Djava.awt.headles
11722 logstash 39 19 3443m 1.2g 6496 S 8.6 3.9 2037:27 /usr/bin/java
-Djava.io.tmpdir=/var/lib/logstash -Xmx1g -X

Any recommendations?

I already followed following article.
http://jablonskis.org/2013/elasticsearch-and-logstash-tuning/index.html

Appreciate your help.

Thanks,
Danishka

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I agree with what Mark said. Nice will be just masking a deeper issue. Have
you tried looking at hot threads?
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/cluster-nodes-hot-threads.html
Also, if you are seeing CPUs sustained at 100% CPU that seems like old GCs
that just are never finishing. So check the GC logs.

Do you have any idea on the number of events per second you are trying to
index and size of the events? If you are using logstash and Redis is the
queue backing up because it can't index?

On Thu, Jan 1, 2015 at 4:49 PM, Mark Walkom markwalkom@gmail.com wrote:

How much data do you have on the node? How many indexes? Have you checked
the logs for GC issues?

You can use nice on the OS level to manage CPU use, but it's not a good
idea, and instead you should figure out why ES is using that CPU.

On 2 January 2015 at 05:09, Danishka Navin danishka@gmail.com wrote:

Hi,

I am new to elasticsearch and logstash.
using elasticsearch-1.1.1 and logstash-1.4.2-1 with Kibana.
Its a single node with 4 vCPU and 30GB of physical memory.

Currently logstash (single node) receive logs from 40 jboss servers.

Most of the time elasticsearch use almost all the CPU resource.
Is there any way I can limit the CPU consumption by tuning?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12216 elastics 20 0 514g 19g 3.6g S 389.8 63.5 3224:32
/usr/bin/java -Xms15g -Xmx15g -Xss256k -Djava.awt.headles
11722 logstash 39 19 3443m 1.2g 6496 S 8.6 3.9 2037:27
/usr/bin/java -Djava.io.tmpdir=/var/lib/logstash -Xmx1g -X

Any recommendations?

I already followed following article.
http://jablonskis.org/2013/elasticsearch-and-logstash-tuning/index.html

Appreciate your help.

Thanks,
Danishka

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Hi,

Here is stats of my single cluster
http://fpaste.org/165093/20232576/

Elasticsearch configuration
http://fpaste.org/165092/14202325/

I don't use Redis.
There were 20+ million events per 10minutes

(Attached screen-dump of events over time)

On Sat, Jan 3, 2015 at 2:26 AM, Christopher Rimondi <chris.rimondi@gmail.com

wrote:

I agree with what Mark said. Nice will be just masking a deeper issue.
Have you tried looking at hot threads?
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/cluster-nodes-hot-threads.html
Also, if you are seeing CPUs sustained at 100% CPU that seems like old GCs
that just are never finishing. So check the GC logs.

Do you have any idea on the number of events per second you are trying to
index and size of the events? If you are using logstash and Redis is the
queue backing up because it can't index?

On Thu, Jan 1, 2015 at 4:49 PM, Mark Walkom markwalkom@gmail.com wrote:

How much data do you have on the node? How many indexes? Have you checked
the logs for GC issues?

You can use nice on the OS level to manage CPU use, but it's not a good
idea, and instead you should figure out why ES is using that CPU.

On 2 January 2015 at 05:09, Danishka Navin danishka@gmail.com wrote:

Hi,

I am new to elasticsearch and logstash.
using elasticsearch-1.1.1 and logstash-1.4.2-1 with Kibana.
Its a single node with 4 vCPU and 30GB of physical memory.

Currently logstash (single node) receive logs from 40 jboss servers.

Most of the time elasticsearch use almost all the CPU resource.
Is there any way I can limit the CPU consumption by tuning?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12216 elastics 20 0 514g 19g 3.6g S 389.8 63.5 3224:32
/usr/bin/java -Xms15g -Xmx15g -Xss256k -Djava.awt.headles
11722 logstash 39 19 3443m 1.2g 6496 S 8.6 3.9 2037:27
/usr/bin/java -Djava.io.tmpdir=/var/lib/logstash -Xmx1g -X

Any recommendations?

I already followed following article.
http://jablonskis.org/2013/elasticsearch-and-logstash-tuning/index.html

Appreciate your help.

Thanks,
Danishka

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http://danishkanavin.blogspot.com
http://twitter.com/danishkanavin

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You're just hitting limits of your node. Drop some data, add more nodes or
more heap are pretty much the options you have. Upgrade to 1.4.2 while you
are at it.

Setting indices.memory.index_buffer_size so high probably isn't a good idea
unless you know what it does, if you have such a high index rate then look
at adding more nodes to spread the load.

On 3 January 2015 at 08:18, Danishka Navin danishka@gmail.com wrote:

Hi,

Here is stats of my single cluster
http://fpaste.org/165093/20232576/

Elasticsearch configuration
http://fpaste.org/165092/14202325/

I don't use Redis.
There were 20+ million events per 10minutes

(Attached screen-dump of events over time)

On Sat, Jan 3, 2015 at 2:26 AM, Christopher Rimondi <
chris.rimondi@gmail.com> wrote:

I agree with what Mark said. Nice will be just masking a deeper issue.
Have you tried looking at hot threads?
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/cluster-nodes-hot-threads.html
Also, if you are seeing CPUs sustained at 100% CPU that seems like old GCs
that just are never finishing. So check the GC logs.

Do you have any idea on the number of events per second you are trying to
index and size of the events? If you are using logstash and Redis is the
queue backing up because it can't index?

On Thu, Jan 1, 2015 at 4:49 PM, Mark Walkom markwalkom@gmail.com wrote:

How much data do you have on the node? How many indexes? Have you
checked the logs for GC issues?

You can use nice on the OS level to manage CPU use, but it's not a good
idea, and instead you should figure out why ES is using that CPU.

On 2 January 2015 at 05:09, Danishka Navin danishka@gmail.com wrote:

Hi,

I am new to elasticsearch and logstash.
using elasticsearch-1.1.1 and logstash-1.4.2-1 with Kibana.
Its a single node with 4 vCPU and 30GB of physical memory.

Currently logstash (single node) receive logs from 40 jboss servers.

Most of the time elasticsearch use almost all the CPU resource.
Is there any way I can limit the CPU consumption by tuning?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12216 elastics 20 0 514g 19g 3.6g S 389.8 63.5 3224:32
/usr/bin/java -Xms15g -Xmx15g -Xss256k -Djava.awt.headles
11722 logstash 39 19 3443m 1.2g 6496 S 8.6 3.9 2037:27
/usr/bin/java -Djava.io.tmpdir=/var/lib/logstash -Xmx1g -X

Any recommendations?

I already followed following article.
http://jablonskis.org/2013/elasticsearch-and-logstash-tuning/index.html

Appreciate your help.

Thanks,
Danishka

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http://danishkanavin.blogspot.com
http://twitter.com/danishkanavin
http://www.flickr.com/photos/danishkanavin/

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Hi Mark,

I have removed the indices.memory.index_buffer_size entry and also update
elasticsearch to 1.4.2
Moreover I have deleted lot of indexes.

I can't see any difference of CPU usage by elasticsearch.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
27719 elastics 20 0 152g 16g 4.5g S 395.1 55.1 29:06.51 /usr/bin/java
-Xms15g -Xmx15g -Xss256k -Djava.awt.headles
27634 logstash 39 19 3459m 670m 13m S 4.0 2.2 2:56.79 /usr/bin/java
-Djava.io.tmpdir=/var/lib/logstash -Xmx1g -X

here is the jstat information for both elasticsearch and logstash
http://ur1.ca/jbeja

Btw, Do I need to update Kibana to 3.1.2 ?

On Sat, Jan 3, 2015 at 6:34 AM, Mark Walkom markwalkom@gmail.com wrote:

You're just hitting limits of your node. Drop some data, add more nodes or
more heap are pretty much the options you have. Upgrade to 1.4.2 while you
are at it.

Setting indices.memory.index_buffer_size so high probably isn't a good
idea unless you know what it does, if you have such a high index rate then
look at adding more nodes to spread the load.

On 3 January 2015 at 08:18, Danishka Navin danishka@gmail.com wrote:

Hi,

Here is stats of my single cluster
http://fpaste.org/165093/20232576/

Elasticsearch configuration
http://fpaste.org/165092/14202325/

I don't use Redis.
There were 20+ million events per 10minutes

(Attached screen-dump of events over time)

On Sat, Jan 3, 2015 at 2:26 AM, Christopher Rimondi <
chris.rimondi@gmail.com> wrote:

I agree with what Mark said. Nice will be just masking a deeper issue.
Have you tried looking at hot threads?
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/cluster-nodes-hot-threads.html
Also, if you are seeing CPUs sustained at 100% CPU that seems like old GCs
that just are never finishing. So check the GC logs.

Do you have any idea on the number of events per second you are trying
to index and size of the events? If you are using logstash and Redis is the
queue backing up because it can't index?

On Thu, Jan 1, 2015 at 4:49 PM, Mark Walkom markwalkom@gmail.com
wrote:

How much data do you have on the node? How many indexes? Have you
checked the logs for GC issues?

You can use nice on the OS level to manage CPU use, but it's not a good
idea, and instead you should figure out why ES is using that CPU.

On 2 January 2015 at 05:09, Danishka Navin danishka@gmail.com wrote:

Hi,

I am new to elasticsearch and logstash.
using elasticsearch-1.1.1 and logstash-1.4.2-1 with Kibana.
Its a single node with 4 vCPU and 30GB of physical memory.

Currently logstash (single node) receive logs from 40 jboss servers.

Most of the time elasticsearch use almost all the CPU resource.
Is there any way I can limit the CPU consumption by tuning?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12216 elastics 20 0 514g 19g 3.6g S 389.8 63.5 3224:32
/usr/bin/java -Xms15g -Xmx15g -Xss256k -Djava.awt.headles
11722 logstash 39 19 3443m 1.2g 6496 S 8.6 3.9 2037:27
/usr/bin/java -Djava.io.tmpdir=/var/lib/logstash -Xmx1g -X

Any recommendations?

I already followed following article.
http://jablonskis.org/2013/elasticsearch-and-logstash-tuning/index.html

Appreciate your help.

Thanks,
Danishka

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http://twitter.com/danishkanavin
http://www.flickr.com/photos/danishkanavin/

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