[Gluster-devel] ioc taking too much memory

[Dan Parsons]

I'm running glusterfs 1.3.11. I have cache-size set to '2048MB' in my  
conf file, but in this particular test I'm running (catting a 6.3GB  
file to /dev/null), it isn't stopping at 2GB. As of this moment it's  
gone to 3.8GB and the box only has 4GB RAM; I'm watching curiously to  
see when the box will crash. I assume this is non-standard behavior?  
It should stop at 2048MB right?

Vitals: CentOS 5.2 64-bit, kernel 2.6.23.14, glusterfs-1.3.11,  
fuse-2.7.2glfs9

Below is my entire config file, though the relevant section is ioc.

### Add client feature and attach to remote subvolume of server1
volume distfs01
 type protocol/client
 option transport-type tcp/client     # for TCP/IP transport
 option remote-host 10.8.101.51      # IP address of the remote brick
 option remote-subvolume brick        # name of the remote volume
end-volume

### Add client feature and attach to remote subvolume of server2
volume distfs02
 type protocol/client
 option transport-type tcp/client     # for TCP/IP transport
 option remote-host 10.8.101.52      # IP address of the remote brick
 option remote-subvolume brick        # name of the remote volume
end-volume

volume distfs03
 type protocol/client
 option transport-type tcp/client
 option remote-host 10.8.101.53
 option remote-subvolume brick
end-volume

volume distfs04
 type protocol/client
 option transport-type tcp/client
 option remote-host 10.8.101.54
 option remote-subvolume brick
end-volume

volume stripe0
  type cluster/stripe
  option block-size *:1MB
  option scheduler alu
  option alu.order read-usage:write-usage:disk-usage
  option alu.read-usage.entry-threshold 20%
  option alu.read-usage.exit-threshold 4%
  option alu.write-usage.entry-threshold 20%
  option alu.write-usage.exit-threshold 4%
  option alu.disk-usage.entry-threshold 2GB
  option alu.disk-usage.exit-threshold 100MB
  subvolumes distfs01 distfs02 distfs03 distfs04
end-volume

volume ioc
  type performance/io-cache
  subvolumes stripe0         # In this example it is 'client' you may  
have to change it according to your spec file.
  option page-size 1MB      # 128KB is default
  option cache-size 2048MB    # 32MB is default
  option force-revalidate-timeout 5 # 1second is default
  option priority *.psiblast:3,*.seq:2,*:1
end-volume



Dan Parsons