Re: A file of 5 MB on tmpfs file system uses 5 MB of RAM or more?
On Fri, Jan 18, 2008 at 02:15:02PM +0100, DI BACCO ANTONIO - technolabs wrote: I have a linux-2.6.19.2 board with an MPC880 with 16MB ram and 16 MB flash. Normally I have 9-10 MB of free RAM. If I allocate 5 MB of ram memory, the system continues to work normally, Are you sure the RAM was actually allocated (i.e. did you write to all of the pages)? -Scott ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Re: A file of 5 MB on tmpfs file system uses 5 MB of RAM or more?
On Jan 18, 2008, at 7:15 AM, DI BACCO ANTONIO - technolabs wrote: I have a linux-2.6.19.2 board with an MPC880 with 16MB ram and 16 MB flash. Normally I have 9-10 MB of free RAM. If I allocate 5 MB of ram memory, the system continues to work normally, but if, instead of allocating 5 MB directly, I fill the / tmp directory (that has a tmpfs file system) with a 5MB file the system becomes slow and after some minutes the oom_killer is invoked. Before it dies I had the time to see that mtdblockd is taking a lot of CPU (20%), what could be the problem? Posting any output from OOM, etc would be useful. - k ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
A file of 5 MB on tmpfs file system uses 5 MB of RAM or more?
I have a linux-2.6.19.2 board with an MPC880 with 16MB ram and 16 MB flash. Normally I have 9-10 MB of free RAM. If I allocate 5 MB of ram memory, the system continues to work normally, but if, instead of allocating 5 MB directly, I fill the /tmp directory (that has a tmpfs file system) with a 5MB file the system becomes slow and after some minutes the oom_killer is invoked. Before it dies I had the time to see that mtdblockd is taking a lot of CPU (20%), what could be the problem? Any hint will be appreciate, Bye, Antonio. ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
