[Stgt-devel] [Iscsitarget-devel] Re: stgt a new version of iscsi target?

Vladislav Bolkhovitin vst at vlnb.net
Wed Dec 14 16:06:40 CET 2005

Mike Christie wrote:
>> Are you sure that there are no now or will be available in the nearest 
>> feature such (eg iSCSI) SCSI arrays with response time/latency so 
>> small that having 5 (five) context switches or more per command, some 
>> of which include map/unmap operations, will not increase the latency 
>> too much? I mean, eg NFS server, which originally was user space 
>> daemon and many people didn't want it in the kernel. Eventually, it's 
>> in. I don't see any fundamental difference between NFS server and SCSI 
>> target server, 
> Isn't the reason a NFS server is still in the kernel is becuase some of 
> the locking difficulties?

Might be. But from what I remember, the major reason was the 
performance. After googling a bit I found many acknowledgments of that.


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