On 18 April 2011 16:03, Dave Martin <dave.martin@linaro.org> wrote:
On Mon, Apr 18, 2011 at 03:34:21PM +0800, Eric Miao wrote:
> All,
>
> It was found that the ubuntu-desktop is a bit memory hungry on this i.MX53
> QuickStart board. There is a large chunk of memory being reserved for the
> graphics/video drivers, and the memory size reserved has to consider the
> worst case. And we have to live with this before the unified memory allocator
> is available.
>
> I don't yet have a /proc/meminfo after system is right up, I'll get some
> statistics a bit later. However, I do want to know if we have some memory

I have a try.
MX53 loco meminfo on: 20110414 Ubuntu desktop release
root@linaro:~# cat /proc/meminfo
MemTotal:         868092 kB
MemFree:          705228 kB
Buffers:            5288 kB
Cached:            74580 kB
SwapCached:            0 kB
Active:            75488 kB
Inactive:          62940 kB
Active(anon):      61168 kB
Inactive(anon):     1028 kB
Active(file):      14320 kB
Inactive(file):    61912 kB
Unevictable:           0 kB
Mlocked:               0 kB
HighTotal:             0 kB
HighFree:              0 kB
LowTotal:         868092 kB
LowFree:          705228 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:                16 kB
Writeback:            24 kB
AnonPages:         58576 kB
Mapped:            29208 kB
Shmem:              3636 kB
Slab:              11080 kB
SReclaimable:       5028 kB
SUnreclaim:         6052 kB
KernelStack:        1912 kB
PageTables:         2128 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:      434044 kB
Committed_AS:     482812 kB
VmallocTotal:     319488 kB
VmallocUsed:      165468 kB
VmallocChunk:     131068 kB
root@linaro:~#

smem info after installed smem:
http://pastebin.ubuntu.com/595429/
 
> footprint evaluation of the existing ubuntu-desktop (we are using unity-2d)?
> And what can we do to improve on that?

There's some old data I recorded on netbook-efl which is probably
the closest data I know about:

https://wiki.linaro.org/Platform/DevPlatform/MemoryFootprintSampleData#netbook-efl

I've been focusing on kernel work this cycle, so I don't know if
the memory footprint work has been moving forward.

Steve may know who's involved now.

Cheers
---Dave

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--
Best wishes,
Spring Zhang