* How to interpret cat /proc/meminfo
@ 2011-10-21 7:29 sandeep kumar
2011-10-25 2:23 ` Mulyadi Santosa
0 siblings, 1 reply; 2+ messages in thread
From: sandeep kumar @ 2011-10-21 7:29 UTC (permalink / raw)
To: kernelnewbies
Hi all,
Here in my device cat /proc/meminfo is showing the following result,
MemTotal: 767960 kB
MemFree: 104252 kB
Buffers: 14696 kB
Cached: 183676 kB
SwapCached: 0 kB
Active: 304596 kB
Inactive: 282020 kB
Active(anon): 250560 kB
Inactive(anon): 139488 kB
Active(file): 54036 kB
Inactive(file): 142532 kB
Unevictable: 988 kB
Mlocked: 0 kB
HighTotal: 536576 kB
HighFree: 23408 kB
LowTotal: 231384 kB
LowFree: 80844 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 389252 kB
Mapped: 94368 kB
Shmem: 816 kB
Slab: 17932 kB
SReclaimable: 7388 kB
SUnreclaim: 10544 kB
KernelStack: 5912 kB
PageTables: 20064 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 383980 kB
Committed_AS: 3685728 kB
VmallocTotal: 434176 kB
VmallocUsed: 261584 kB
VmallocChunk: 115324 kB
&&
My kernel virtual memory lay out is like this,
<5>[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
<5>[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
<5>[ 0.000000] DMA : 0xff000000 - 0xffe00000 ( 14 MB)
<5>[ 0.000000] vmalloc : 0xdf800000 - 0xfa000000 ( 424 MB)
<5>[ 0.000000] lowmem : 0xc0000000 - 0xdf000000 ( 496 MB)
<5>[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
<5>[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
<5>[ 0.000000] .init : 0xc0008000 - 0xc0049000 ( 260 kB)
<5>[ 0.000000] .text : 0xc0100000 - 0xc0a26000 (9368 kB)
<5>[ 0.000000] .data : 0xc0b00000 - 0xc0c464c0 (1306 kB)
&&
In the kernel command line i had put the "vmalloc=432MB" , to reserve the
vmalloc area.
My question is,
While in the kernel memory layout, lowmem is shown as 496MB,
in /proc/meminfo LowMEMtotal is only 231MB.
Why is the difference between the two?
How to increase the Lowmem size with reserving my vmalloc region
memory(432MB)
--
With regards,
Sandeep Kumar Anantapalli,
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* How to interpret cat /proc/meminfo
2011-10-21 7:29 How to interpret cat /proc/meminfo sandeep kumar
@ 2011-10-25 2:23 ` Mulyadi Santosa
0 siblings, 0 replies; 2+ messages in thread
From: Mulyadi Santosa @ 2011-10-25 2:23 UTC (permalink / raw)
To: kernelnewbies
Hi...
On Fri, Oct 21, 2011 at 14:29, sandeep kumar <coolsandyforyou@gmail.com> wrote:
> My question is,
> While in the kernel memory layout, lowmem is shown as 496MB,
> in /proc/meminfo LowMEMtotal is only 231MB.
> Why is the difference between the two?
Maybe there's a device memory mapped in the lowmem region. Check using
tools like "lspci" or such. I can't think of another possibility right
now, so others might add...
BTW, it's a bit surprised me. Looking at the amount of your total RAM,
it should be all mapped in low mem. I wonder, why some of them are
shifted into high mem...
ANd the amount of committed_AS...that is really big compared to your
actual RAM, don't you agree?
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
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