On 7 dec 2009, at 18.40, Bob Friesenhahn wrote:

> On Mon, 7 Dec 2009, Richard Bruce wrote:
> 
>> I started copying over all the data from my existing workstation. When 
>> copying files (mostly multi-gigabyte DV video files), network throughput 
>> drops to zero for ~1/2 second every 8-15 seconds.  This throughput drop 
>> corresponds to drive activity on the Opensolaris box.  The ZFS pool drives 
>> show no activity except every 8-15 seconds.  As best as I can guess, the 
>> Opensolaris box is caching traffic and batching it to disk every so often.  
>> I guess I didn't expect disk writes to interrupt network traffic.  Is this 
>> correct?
> 
> This is expected behavior.  From what has been posted here, these are the 
> current buffering rules:

Is it really?

Shouldn't it start on the next txg and while the previous txg commits,
and just continue writing?

/ragge

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