Hi ,
I am getting out of memory issue in nfsv4 protocol in nfs ganesha verstio 2.3.
IN nfsv3 protocol we did not observe such issue at that particular amount of
upload. We are suspecting that packet consumption speed is slower than data
reception rate. For that we analyzed nfs queue size from which worker thread
picks up packets and process. We could see that there is lag in data enqueue
and dequeue rate.
Also we observed that when we put delay in read from socket then this issue
does not occur. We are using local and sdfs mount points.In local mount points
this issue does not occur which indicates the disk write speed is primarily
causing this issue.
But we could not observe any threshold value inf nfsv4 at which oom issue will
occur, as compared to nfsv3.
Further oom_score does not go down even after copy is complete in both cases of
local mount and sdfs mount and int both of nfsv4 and v3 protocols.
Implemeted several solution suggested like inceasing the kernel priority of
reclaiming cache inode and dentries. But it could not afffect the issue.
Any suggestion would be highly appreciated.
regards
-Deepak
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