status of autotuning freebsd for 9.2

[Andre Oppermann]

On 08.07.2013 16:37, Andre Oppermann wrote:
> On 07.07.2013 20:24, Alfred Perlstein wrote:
>> On 7/7/13 1:34 AM, Andre Oppermann wrote:
>>> Can you help me with with testing?
>>>
>> Yes.  Please give me your proposed changes and I'll stand up a machine and give feedback.
>
> http://people.freebsd.org/~andre/mfc-autotuning-20130708.diff

Any feedback from testers on this?  The MFC window is closing soon.

-- 
Andre

> This is functional bundle MFC of these original commits:
>
> MFC r242029 (alfred):
>
>   Allow autotune maxusers > 384 on 64 bit machines.
>
> MFC r242847 (alfred):
>
>   Allow maxusers to scale on machines with large address space.
>
> MFC r243631 (andre):
>
>   Base the mbuf related limits on the available physical memory or
>   kernel memory, whichever is lower.  The overall mbuf related memory
>   limit must be set so that mbufs (and clusters of various sizes)
>   can't exhaust physical RAM or KVM.
>
>   At the same time divorce maxfiles from maxusers and set maxfiles to
>   physpages / 8 with a floor based on maxusers.  This way busy servers
>   can make use of the significantly increased mbuf limits with a much
>   larger number of open sockets.
>
> MFC r243639 (andre):
>
>   Complete r243631 by applying the remainder of kern_mbuf.c that got
>   lost while merging into the commit tree.
>
> MFC r243668 (andre):
>
>   Using a long is the wrong type to represent the realmem and maxmbufmem
>   variable as they may overflow on i386/PAE and i386 with > 2GB RAM.
>
> MFC r243995, r243996, r243997 (pjd):
>
>   Style cleanups, Make use of the fact that uma_zone_set_max(9) already
>   returns actual limit set.
>
> MFC r244080 (andre):
>
>   Prevent long type overflow of realmem calculation on ILP32 by forcing
>   calculation to be in quad_t space.  Fix style issue with second parameter
>   to qmin().
>
> MFC r245469 (alfred):
>
>   Do not autotune ncallout to be greater than 18508.
>
> MFC r245575 (andre):
>
>   Move the mbuf memory limit calculations from init_param2() to
>   tunable_mbinit() where it is next to where it is used later.
>
> MFC r246207 (andre):
>
>   Remove unused VM_MAX_AUTOTUNE_NMBCLUSTERS define.
>
> MFC r249843 (andre):
>
>   Base the calculation of maxmbufmem in part on kmem_map size
>   instead of kernel_map size to prevent kernel memory exhaustion
>   by mbufs and a subsequent panic on physical page allocation
>   failure.
>
>