Thanks Ming for your reply.... Pls search in the mail for 'MemFree". Before inserting the module, its 664KB and after, when insmod was tried its 1524KB. BUT during the module loading procedure it shows that there is 0kB of highMemory as well as the same amount of memory for lowMemory. My QUESTION is, where the pages have been gone in between? ~Abu. -----Original Message----- From: Ming Zhang [mailto:mingz@xxxxxxxxxxx] Sent: Tuesday, April 18, 2006 6:41 PM To: Abu M. Muttalib Cc: kernelnewbies@xxxxxxxxxxxx Subject: Re: problem inserting modules u are trying to ask for a physically continuous 2^5 * 4K or 128KB memory, it is pretty hard to find high order memory when u memory usage is like that. try to load u module earlier or ask for low order memory. ming On Tue, 2006-04-18 at 03:34 +0530, Abu M. Muttalib wrote: > Hi, > > I am running linux kernel 2.6 on an embedded system. > In my application I > have executed the following command > system ("cat /proc/meminfo") > I see the following > > MemTotal: 13864 kB > MemFree: 664 kB > Buffers: 1588 kB > Cached: 5452 kB > SwapCached: 0 kB > Active: 5280 kB > Inactive: 3720 kB > HighTotal: 0 kB > HighFree: 0 kB > LowTotal: 13864 kB > LowFree: 664 kB > SwapTotal: 0 kB > SwapFree: 0 kB > Dirty: 0 kB > Writeback: 0 kB > Mapped: 4664 kB > Slab: 1596 kB > CommitLimit: 6932 kB > Committed_AS: 22300 kB > PageTables: 172 kB > VmallocTotal: 630784 kB > VmallocUsed: 262576 kB > VmallocChunk: 366588 kB > > Then subsequently I am inserting one module i get the > "page allocation failure" > > and I get the following error message tho' kernel... > > *************************************************************** > > insmod: page allocation failure. order:5, mode:0xd0 > Mem-info: > DMA per-cpu: > cpu 0 hot: low 2, high 6, batch 1 used:5 > cpu 0 cold: low 0, high 2, batch 1 used:1 > Normal per-cpu: empty > HighMem per-cpu: empty > Free pages: 1216kB (0kB HighMem) > Active:1494 inactive:674 dirty:0 writeback:0 > unstable:0 free:304 slab:401 > mapped:1259 pagetables:46 > DMA free:1216kB min:512kB low:640kB high:768kB > active:5976kB inactive:2696kB > present:16384kB pages_scanned:0 all_unreclaimable? no > lowmem_reserve[]: 0 0 0 > Normal free:0kB min:0kB low:0kB high:0kB active:0kB > inactive:0kB present:0kB > pages_scanned:0 all_unreclaimable? no > lowmem_reserve[]: 0 0 0 > HighMem free:0kB min:128kB low:160kB high:192kB > active:0kB inactive:0kB > present:0kB pages_scanned:0 all_unreclaimable? no > lowmem_reserve[]: 0 0 0 > DMA: 18*4kB 51*8kB 28*16kB 1*32kB 2*64kB 1*128kB > 0*256kB 0*512kB 0*1024kB = > 1216kB > Normal: empty > HighMem: empty > Swap cache: add 0, delete 0, find 0/0, race 0+0 > Free swap = 0kB > Total swap = 0kB > Free swap: 0kB > 4096 pages of RAM > 382 free pages > 701 reserved pages > 401 slab pages > 1570 pages shared > 0 pages swap cached > > *************************************************************** > > Now I again run the command > system ("cat /proc/meminfo") > and now I see the following: > > MemTotal: 13864 kB > MemFree: 1524 kB > Buffers: 1244 kB > Cached: 5224 kB > SwapCached: 0 kB > Active: 5776 kB > Inactive: 2672 kB > HighTotal: 0 kB > HighFree: 0 kB > LowTotal: 13864 kB > LowFree: 1524 kB > SwapTotal: 0 kB > SwapFree: 0 kB > Dirty: 0 kB > Writeback: 0 kB > Mapped: 4676 kB > Slab: 1604 kB > CommitLimit: 6932 kB > Committed_AS: 22168 kB > PageTables: 172 kB > VmallocTotal: 630784 kB > VmallocUsed: 262560 kB > VmallocChunk: 366588 kB > > Is there any clue? I have some 650 KB free before > inserting the module and > after that some 1.5 MB free memory space, and still I > am not able to insert > the module. > > Why it's so? Any help will be highly appreciated. > > ~Abu. > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
