On 23/07/2010 10:02, Sigbjorn Lie wrote:
On Fri, July 23, 2010 10:42, tomwaters wrote:
I agree, I get apalling NFS speeds compared to CIFS/Samba..ie. CIFS/Samba of
95-105MB and NFS of
5-20MB.
Not the thread hijack, but I assume a SSD ZIL will similarly improve an iSCSI
target...as I am
getting 2-5MB on that too. --
This message posted from opensolaris.org
This is exactly the numbers I'm getting as well.
What's the reason for such low rate when using iSCSI?
The filesystem or application using the iSCSI target may be requesting
regular cache flushes. These will require synchronous writes to disk. An
SSD doesn't remove the sync writes, it just makes them a lot faster.
Other sensible storage servers typically use NVRAM caches to solve this
problem. Others just play fast and loose with your data.
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