Hi ,
Their are few doubts about CMEM
1)I can see their is fixed phys_start and phys_ end address in loadmodules.sh
.So how decrement in Linux memory can be compensated with required pools of
memory?
2)What is the maximum memory a pool can be allocated ?
3)How CMEM works while allocation ,does it select a best fit pool or first fit
pool or anything else it follow?
4)In my case i tried with different possible configuration to satisfy the
requirements .After satisfying one sequence of required memory pools ,
application asked another chunk of 4147200 and 8294400 memory .That it was not
able to provide .My application corrctly work if i save a low resolution image
(720 x 480) but i get such memory pool problems with high resolution image.
Thanks ,
Ashish
On Tue, 04 Nov 2008 Tivy,Robert wrote :
>Your loadmodules.sh shows you giving 12MB to CMEM (although the insmod line
>appears to be commented out). This amount will satisfy your specified needs of
>My memory req are like
>pool fitting a size 4147200
>pool fitting a size 8294400
>although enough for only one of each. However, you are partitioning the 12MB
>with too many pools/buffers to allow your allocations to succeed. Try
>specifying:
>pools=1x8294400,1x4147200
>
>If you need more than just those two buffers, you will need to give less
>memory to Linux and more to CMEM. Linux kernel memory is specified on the
>boot command. With your given loadmodules.sh, you would need to be specifying
>mem=116M at a maximum, and to give more to CMEM you would need to specify less
>than 116M.
>
>- Rob
>
>________________________________
> From: [EMAIL PROTECTED] [EMAIL PROTECTED] On Behalf Of ashish pareek [EMAIL
> PROTECTED]
>Sent: Monday, November 03, 2008 4:56 AM
>To: Vladimir Pantelic
>Cc: davinci
>Subject: Re: Re: CMEM Error
>
> Hi,
>Since i am new to linux can u let me know how i can exchange memory with linux
>.
>My loadmodules.sh script looks like
>
>#!/bin/sh
>
># 12MB
># insmod cmemk.ko phys_start=0x87400000 phys_end=0x88000000
>pools=1x2097152,2x1529856,7x829440,1x524288,1x108680,1x81920,2x8192,6x4096
>./mapdmaq
>
>insmod dm350mmap.ko
>rm -f /dev/dm350mmap
>mknod /dev/dm350mmap c `awk "\\$2==\"dm350mmap\" {print \\$1}" /proc/devices` 0
>
>My memory req are like
>pool fitting a size 4147200
>pool fitting a size 8294400
>
>Regard's
>Ashish
>
>
>
>
>On Mon, 03 Nov 2008 Vladimir Pantelic wrote : >ashish pareek wrote: >> Hi, >>I
>tried to configure my memory requirements in loadmodules.sh script that
>allocated memory pools , but i got error >>CMEMK Error :failed to get big
>enough free block . > >increase the size of memory that you give to cmem and
>reduce the size given to linux (mem=xxx). > >>Is it because my mem req are so
>high ? How cud i find maxm memory supported ? > >I don't know your memory
>requirements, but you exchange cmem for linux mem easily. > > >> >>Ashish >>
>>> >>On Mon, 03 Nov 2008 Vladimir Pantelic wrote : >> >ashish pareek wrote: >>
>>> >>Hi , >> >>Is it possible to have an jpg image of high resolution (i.e.
>1920 x 1080) from jpeg engine using DM355 . Are their any kind of hardware
>limitation in doing that ? >> >>My idea is to get an high resolution RAW and
>YUV (i.e. 1920 x 1080) image and than convert YUV image to jpg using JPEG
>engine . >> >> >> >>When i tried to have an image 1920 x 1080 resolution i
>found following error >> >>CMEM Error : getPool : failed to get a pool fitting
>a size 4147200 >> >>CMEM Error : getPool : failed to get a pool fitting a size
>8294400 >> > >> >CMEM was not able to find a large enough buffer, check how it
>is configured (when the modules is loaded) and increase the pool size. >> > >>
>> >> > >> >_______________________________________________ >>
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>>> >>Rediff Shopping >> > > >_______________________________________________
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