On Sep 3, 2014, at 8:51 AM, Brian Menges via illumos-zfs 
<[email protected]> wrote:

> Are these dtrace tools available to FreeBSD? I'm trying to solve/improve some 
> throughput performance on zvol across iscsi. I have observed that the log 
> device isn't in use at all across iscsi... very sad indeed.

[i]SCSI is a non-blocking (dare we say asynchronous?) protocol, so we don't 
expect slogs to be 
used except for when the client issues a cache flush or the client disables the 
write cache. This 
is a good thing, not a sad thing :-)
 -- richard
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