How can I improve my NFS performance?
Start plenty of NFS daemon threads.
- If read dominates, add RAM on the clients to cache more of the file systems and reduce read operations.
- If write dominates, make sure the clients are using noatime,nodiratime to avoid updating access times. …
- If getattr dominates, tune the attribute caches.
How much RAM does NFS server need?
To install a dedicated NFS server, you can use any operating system that provides NFS. Additionally, the NFS server must meet the following hardware requirements: 16 GB RAM, 8 CPU cores, and 100 GB free disk space.
Why is NFS so slow?
If access to remote files seems unusually slow, ensure that access time is not being inhibited by a runaway daemon, a bad tty line, or a similar problem. Use the nfsstat command to gather information about your network connections. To set MTU size, use the SMIT fast path, smit chif .
How is NFS performance measured?
You can use the nfsstat command to monitor NFS operation activity by the client. The NFS client displays the number of NFS calls sent and rejected, as well as the number of times a client handle was received, clgets , and a count of the various kinds of calls and their respective percentages.
Is NFS or SMB faster?
Depending on your needs, the best thing to do would be to set up a Samba share and NFS share and run various real-world read/write/CPU tests across the network. If you have similar needs as I do (Windows machines) you might be surprised to find out that Samba is 20% faster than NFS.
Why does NFS use UDP?
When UDP is used as a transport protocol, presumably it would be up to the NFS client to manage retransmissions if necessary. The stateless UDP connection minimizes network traffic, as the NFS server sends the client a cookie after the client is authorized to access the shared volume.
What can I use instead of NFS?
Exact alternative for NFS would be NIS. When you concern about large file sharing and you don’t want to configure any settings related user and file & directories permission in client level, then best option is NIS.
What is NFS IOPS?
System – NFS IOPS
Total number of NFS I/O requests, in I/O per second, across all ports in the storage system.
What is Rsize and Wsize in NFS?
rsize: The number of bytes NFS uses when reading files from an NFS server. … wsize: The number of bytes NFS uses when writing files to an NFS server. The wsize is negotiated between the server and client to determine the largest block size that both can support.
What port is NFS?
NFS uses port 2049. NFSv3 and NFSv2 use the portmapper service on TCP or UDP port 111.
How can I test NFS read?
To Check the NFS Server. Determine what is being exported by typing share. Display the file systems mounted and the disk drive on which the file system is mounted by typing df -k. If a file system is over 100 percent full, it may cause NFS write errors on the clients.
How do I check NFS logs?
Enable debugging for NFS logs :
In the above output you can see its enabled list of modules for debugging (on right) for daemon nfsd (on left). Once this is done you need to restart your NFS daemon. After restarting you can check Syslog and voila! There are your NFS logs!