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ceph journal partition

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hoanglongvina
12 Posts
September 5, 2017, 3:01 am

Hi ADMIN,

I setup petasan with hardware and network :

  • 3 server DELL R620:
    • 1 SAS -> SYSTEM - 1 SSD --> OSD + JOURNAL
    • RAM 64 GB
    • CPU E5
  • Network 10 GB- SWITCH SISCO

But read and write speeds very low (image test on disk iscsi)

What i can config to speed up reading and write? please help me.

Thank every body.

 

 

 

Last edited on September 5, 2017, 3:04 am by hoanglongvina · #11

admin
2,930 Posts
September 5, 2017, 5:59 am

 

Add disks ! 1 disk is not enough. The more you add the faster it will get...it will scale almost in linear fashion. For SAS you should have 10 to 24 disks per host (+ 3 to 6 SSD journals).  Also note the 4k numbers are always controlled by iops limits for spinning disks.

 

 

 

#12

hoanglongvina
12 Posts
September 6, 2017, 1:55 am

Hi ADMIN,

THANK YOU, SUPPORT FOR ME.

#13
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