Re: Sudden and massive page cache eviction

["Peter Schüller" <scode@spotify.com>]

>> Do you have any large page (hugetlbfs) or other multi-order (> 1 page)
>> allocations happening in the kernel?

I forgot to address the second part of this question: How would I best
inspect whether the kernel is doing that?

Looking at the kmalloc() sizes from vmstat -m I have the following on
one of the machines (so very few larger than 4096). But I suspect you
are asking for something different?

kmalloc-8192                 52     56   8192      4
kmalloc-4096              33927  62040   4096      8
kmalloc-2048                338    416   2048     16
kmalloc-1024              76211 246976   1024     32
kmalloc-512                1134   1216    512     32
kmalloc-256              109523 324928    256     32
kmalloc-128                3902   4288    128     32
kmalloc-64               105296 105536     64     64
kmalloc-32                 2120   2176     32    128
kmalloc-16                 4607   4608     16    256
kmalloc-8                  6655   6656      8    512
kmalloc-192                6546   9030    192     21
kmalloc-96                29694  32298     96     42

-- 
/ Peter Schuller aka scode

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