[OmniOS-discuss] [developer] The ixgbe driver, Lindsay Lohan, and the Greek economy

[Garrett D'Amore]

However, if you look at the total times involved — we’re talking about 1.5 us average, and only 9.3k events.  So there maybe some VM activity, but it is only responsible for 14.4 ms over the entire 30 sec run.  Again, that’s not *great*, but its unlikely to be related (at least directly) for the tragic behavior we’ve seen elsewhere.  (Indeed, the claim is that reads are good, so this result is from a good side, hence a red herring.)

	- Garrett

> On Mar 2, 2015, at 11:15 AM, Dan McDonald via illumos-developer <developer at lists.illumos.org> wrote:
> 
> 
>> On Mar 2, 2015, at 2:07 PM, W Verb via illumos-developer <developer at lists.illumos.org> wrote:
>> 
>> Count indv cuml rcnt     nsec Hottest Lock           Caller
>> -------------------------------------------------------------------------------
>> 9306  44%  44% 0.00     1557 htable_mutex+0x370     htable_release
>> 6307  23%  68% 0.00     1207 htable_mutex+0x108     htable_lookup
>>  596   7%  75% 0.00     4100 0xffffff0931705188     cv_wait
>>  349   5%  80% 0.00     4437 0xffffff0931705188     taskq_thread
>>  704   2%  82% 0.00      995 0xffffff0935de3c50     dbuf_create
> 
> That has NOTHING to do with TCP.
> 
> It has everything to do with the Virtual Memory subsystem.  Here, see all the callers to htable_release():
> 
> 	http://src.illumos.org/source/search?q=&defs=&refs=htable_release&path=&hist=&project=illumos-gate
> 
> I think "VM thrashing" when I see that.

> 
> Dan
> 
> 
> 
> -------------------------------------------
> illumos-developer
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