collectl and the new slab allocator [slub] statistics

[Mark Seger <Mark.Seger@hp.com>]

I hope you don't mind but I changed the subject from the pretty generic 
one of 'slub.

My latest thought about handling the multiple aliases is what if I do 
something like slabinfo - pick a 'primary' one based on a similar 
criteria such as the longest name that isn't 'kmalloc' or that other 
funky format with the size in its name.  Then provide a second option 
that shows the mappings of all the names to the primary ones.  That way 
if you're interested in a particular slab you can always look up its 
mapping.  I would also provide a mechanism for specifying those slabs 
you want to monitor and even if not a 'primary' name it would use that name.

Today's kind of over for me but perhaps I can send out an updated 
prototype format tomorrow.

-mark

Christoph Lameter wrote:
> On Thu, 27 Dec 2007, Mark Seger wrote:
>
>   
>> ok, here's a dumb question...  I've been looking at slabinfo and see a routine
>> called find_one_alias which returns the alias that gets printed with the -f
>> switch.  the only thing is the leading comment says "Find the shortest alias
>> of a slab" but it looks like it returns the longest name.  Did you change the
>> functionality after your wrote the comment?  that'll teach you for commenting
>> your code!  8-)
>>     
>
> Yuck.
>
>   
>> I'm also not sure why it would stop the search when it finds an alias that
>> started with 'kmall'.  Is there some reason you wouldn't want to use any of
>> those names as potential candidates?  Does it really matter how I choose the
>> 'first' name?  It's certainly easy enough to pick the longest, I'm just not
>> sure about the test for 'kmall'.
>>     
>
> Well the kmallocs are generic and just give size information. You want a 
> slab name that is more informative than that. 
>   

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>