High iowait time with NFS on OMAP3EVM

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,
When I copy a large file to/from NFS mounted filesystem, the system becomes
unresponsive and top command shows very high iowait(80%+) time. Though the IO operation goes through, typical throughput is < 8Mbps/sec.

On the same system, testing for Ethernet driver throughput using iperf yields close to 50Mb/sec throughput. (I am using the tip of linux-omap and running on OMAP3EVM using smc911x driver)

Any pointers on what could result in degradation of throughput when using NFS and the resulting high iowait time?

Regards
Sriram

--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux