Gluster - Load Average/CPU

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Hello everyone,

  I hope you are doing well. I have a  glusterfs (version 3.3.1) with 4 nodes:

[root@client-fs01 ~]# gluster volume info gluster00
 
Volume Name: gluster00
Type: Distributed-Replicate
Volume ID: 662bf991-562c-464b-8d39-1909ae378f37
Status: Started
Number of Bricks: 2 x 2 = 4
Transport-type: tcp
Bricks:
Brick1: cliente-fs01:/export1
Brick2: cliente-fs02:/export2
Brick3: cliente:/export3
Brick4: cliente-fs04:/export4
Options Reconfigured:
auth.allow: 10.*
performance.cache-size: 1GB
cluster.data-self-heal-algorithm: full
performance.io-thread-count: 32
geo-replication.indexing: on
performance.write-behind-window-size: 2MB

Two nodes (client-fs03 and client-fs04) always are with high load average (I think because CPU utilization by glusterfsd daemon)

[root@client-fs01 ~]# top
top - 11:01:29 up 75 days, 12:41,  2 users,  load average: 0.00, 0.00, 0.00
Tasks: 168 total,   1 running, 167 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.1%us,  0.0%sy,  0.0%ni, 99.9%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   5993104k total,  5880888k used,   112216k free,    27276k buffers
Swap:  8290296k total,   127856k used,  8162440k free,  2585964k cached

[root@client-fs02 ~]# top
top - 11:02:25 up 31 days, 10:24,  1 user,  load average: 0.00, 0.00, 0.00
Tasks: 167 total,   1 running, 166 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.3%us,  0.4%sy,  0.0%ni, 99.3%id,  0.1%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   5993104k total,  4168744k used,  1824360k free,    54540k buffers
Swap:  8290296k total,   136952k used,  8153344k free,   607736k cached

[root@client-fs03 ~]# top
top - 11:02:22 up 50 days, 19:51,  2 users,  load average: 11.56, 10.33, 11.18
Tasks: 168 total,   1 running, 167 sleeping,   0 stopped,   0 zombie
Cpu(s): 68.5%us, 14.9%sy,  0.0%ni, 16.3%id,  0.0%wa,  0.0%hi,  0.3%si,  0.0%st
Mem:   5993104k total,  1817388k used,  4175716k free,     3232k buffers
Swap:  8290296k total,   182976k used,  8107320k free,    19904k cached

[root@client-fs04 ~]# top
top - 11:02:50 up 75 days, 12:35,  2 users,  load average: 3.43, 3.77, 3.83
Tasks: 168 total,   1 running, 167 sleeping,   0 stopped,   0 zombie
Cpu(s): 33.9%us,  6.1%sy,  0.0%ni, 59.9%id,  0.0%wa,  0.0%hi,  0.2%si,  0.0%st
Mem:   5993100k total,  4167652k used,  1825448k free,     6804k buffers
Swap:  8290296k total,   166024k used,  8124272k free,    87160k cached


Each server has 4 CPUs and 6Gb memory.
Is it normal?

Regards,
Wendel Ferreira

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