NFS performance very slow with 'tar' command but much faster with 'dd'
Issue
- Creating a tar and extracting , I am getting very low speed like 6-10MB/sec. It is writing to netapp filer and NFS mounted
- To create tar file of 444GB it took 12 hours
- To extract 444GB tar file it took 18 Hours
- DD's will give me 80MB/sec speed.
- CPU is not 100% used
Environment
- Red Hat Enterprise Linux 5.4
- 2.6.18-164.6.1.el5
- nfs-utils-1.0.9-42.el5-x86_64
- Application: 'tar' command
- source: GFS filesystem (EMC) or NFS server (NetApp)
- destination: NetApp NFS Server
- NetApp FAS3240 (NFS Server)
- Ontap version: 8.0.1P5 7-mode
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.
