Why is the write speed on NFS share slower than the write speed on local file system?
Issue
- Performing write operations on NFS shares is three times slower than the local file system.
- Why does write speed slow over NFS as compared to local file systems(ext3,ext4)
- Creating a file on local disk
$ dd if=/dev/zero of=/app/test.txt bs=1G count=1 oflag=direct
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 4.2535 seconds, 252 MB/s
$
- Creating a file on NFS mount point
$ dd if=/dev/zero of=/mnt/test.txt bs=1G count=1 oflag=direct;date;rm /orabackup/t.txt
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 13.4193 seconds, 80.0 MB/s
$
Environment
- Red Hat Enterprise Linux (ALL)
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