Hi List, i ran in the following problem: when i produce files (with dd) or copy files to or from the uml machine, i can see (with top), that the used memory and the cached things increases, while the unused memory will go down. shortly before memory will come to zero, the uml stops working completely without any messages in the /var/log/* files on uml or host system.
if i do in between a "echo 3 > /proc/sys/vm/drop_caches" it cleans caches, frees memory and works fine! but i have to do this all 10 seconds when i use dd for producing large files ;-( these are the components i use: - debian etch on host with debian kernel patched with skas3 from debian - 1024 MB RAM on host - RAID5 System with 3ware Controller (5x2G) almost 1 TB - on uml i use debian etch, with bridged networking, 512MB RAM for uml - 6G root_fs for uml and 256M swap here is the command with which i start the uml: sudo -u uml /usr/bin/linux.uml umid=uml mem=512M eth0=tuntap,tap1 ubd0=/usr/media/uml-linux/root_fs_2007_04_23 ubd1=/usr/media/uml-linux/swap_fs con=null root=/dev/ubda uml_dir=/tmp/ I would be really happy if someone could tell me what i can test more to find out why this system is instable with i/o operations and caches. thanx for any reply, Herbert ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
