We have write intensive application. We are using NFSv4 on top of ext4,to write the data.<br />
The server had 16GB of memory, and appears to gobble up about 0.5 - 1GB per day until running out of memory and eventually crashing.<br />
<br />
The lost memory is kept on slab and it will never reclaimable. If we unmount the nfs partition the memory get released.<br />
<br />
We used "drop_caches" command to free up the memory frequently.<br />
<br />
• OS=CentOS 6.2 <br />
• Kernel= 2.6.32-220.el6.x86_64<br />
<br />
# rpm -qa | grep nfs<br />
nfs-utils-1.2.3-15.el6.x86_64<br />
nfs-utils-lib-1.1.5-4.el6.x86_64<br />
<br />
Is this a bug in OS itself or on the NFS.<br />
<br />
I am sorry if this issue is already discussed a lot and its resolved now.<br />
<br />
Please let me know what need to be applied on the server to fix this.<br />
<br />
Any help is greatly appreciated.
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