>
> On Tue, 2010-01-26 at 14:47 -0600, Chris Friesen wrote:
>> On 01/26/2010 01:03 PM, Chris Friesen wrote:
>>
>> > I'm currently trying to figure out which of the entries in
>> /proc/meminfo
>> > are actually orthogonal to each other. Ideally I'd like to be able to
>> > add up the suitable entries and have it work out to the total memory on
>> > the system, so that I can then narrow down exactly where the memory is
>> > going. Is this feasable?
>>
>> I've tried adding up
>> MemFree+Buffers+Cached+AnonPages+Mapped+Slab+PageTables+VmallocUsed
>
> VmallocUsed referws to Vmalloc address space consumption. However,
> Vmalloc address space is not used exclusively to map system RAM into
> virtual address space. It is also used to map PCI MMIO windows to the
> register sets or memory chips on PCI cards into the vritual address
> space.
>
> Regards,
> Andy
>
>
>> (hugepages are disabled and there is no swap)
>>
>> Shortly after boot this gets me within about 3MB of MemTotal. However,
>> after 1070 minutes there is a 64MB difference between MemTotal and the
>> above sum.
>>
>> Here's /proc/meminfo after 1070 minutes:
>>
>> MemTotal: 4042848 kB
>> MemFree: 406112 kB
>> Buffers: 12072 kB
>> Cached: 3068368 kB
>> SwapCached: 0 kB
>> Active: 671200 kB
>> Inactive: 2711952 kB
>> SwapTotal: 0 kB
>> SwapFree: 0 kB
>> Dirty: 44 kB
>> Writeback: 0 kB
>> AnonPages: 235864 kB
>> Mapped: 30752 kB
>> Slab: 200156 kB
>> SReclaimable: 142828 kB
>> SUnreclaim: 57328 kB
>> PageTables: 4320 kB
>> NFS_Unstable: 0 kB
>> Bounce: 0 kB
>> WritebackTmp: 0 kB
>> CommitLimit: 2021424 kB
>> Committed_AS: 2593116 kB
>> VmallocTotal: 34359738367 kB
>> VmallocUsed: 21496 kB
>> VmallocChunk: 34359716779 kB
>> HugePages_Total: 0
>> HugePages_Free: 0
>> HugePages_Rsvd: 0
>> HugePages_Surp: 0
>> Hugepagesize: 2048 kB
>> DirectMap4k: 3008 kB
>> DirectMap2M: 4190208 kB
>>
>> Any ideas how to track down the missing memory?
>>
>> Chris
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