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SubjectRe: which fields in /proc/meminfo are orthogonal?
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

(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?


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