Re: [Gluster performance tuning]how to determine the value of performcance.cache-size

[Juan José Pavlik Salles <jjpavlik@xxxxxxxxx>]

Hi Jifeng, as far as I know and from the tests I've run, performance.cache-size is located on the client side (even though docs said it could also be on the server side). Therefore be careful not to use more memory than you have on your gluster clients.

2014-11-10 8:03 GMT-03:00 Jifeng Li <jifeng.li@xxxxxxxxxxxx>:

Hi  ,

 

How do I  determine  the value of  performance.cache-size option  suitable for my glusterFS environment ? If I have large memory, can I set this value more larger ? 

 

Now I have 6 nodes which have 4 bricks.

 

Volume info is shown below:

Volume Name: gv0

Type: Distributed-Replicate

Volume ID: 8968985c-9272-4b03-8078-cf3ed91f9fc2

Status: Started

Number of Bricks: 12 x 2 = 24

Transport-type: tcp

Bricks:

Brick1: adf-db1:/export/disk1/brick

Brick2: adf-db2:/export/disk1/brick

Brick3: adf-db1:/export/disk2/brick

Brick4: adf-db2:/export/disk2/brick

Brick5: adf-db1:/export/disk3/brick

Brick6: adf-db2:/export/disk3/brick

Brick7: adf-db1:/export/disk4/brick

Brick8: adf-db2:/export/disk4/brick

Brick9: adf-rr1:/export/disk1/brick

Brick10: adf-rr2:/export/disk1/brick

Brick11: adf-rr1:/export/disk2/brick

Brick12: adf-rr2:/export/disk2/brick

Brick13: adf-rr1:/export/disk3/brick

Brick14: adf-rr2:/export/disk3/brick

Brick15: adf-rr1:/export/disk4/brick

Brick16: adf-rr2:/export/disk4/brick

Brick17: adf-fr1:/export/disk1/brick

Brick18: adf-fr2:/export/disk1/brick

Brick19: adf-fr1:/export/disk2/brick

Brick20: adf-fr2:/export/disk2/brick

Brick21: adf-fr1:/export/disk3/brick

Brick22: adf-fr2:/export/disk3/brick

Brick23: adf-fr1:/export/disk4/brick

Brick24: adf-fr2:/export/disk4/brick

Options Reconfigured:

network.ping-timeout: 20

performance.cache-size: 1024MB

 

 

 

 

BRs,

Jifeng.Li

 

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Pavlik Salles Juan José

Blog - http://viviendolared.blogspot.com

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