Messages in this thread | | | From | devnull@adc ... | Date | Tue, 25 Jun 2002 17:13:05 -0400 (EDT) | Subject | ramfs/ramdisk. |
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Hello All,
I am trying to understand the differences between ramfs and ramdisk, and also trying to use ramfs.
I am running 2.4.13-ac8.
I do a mount -t ramfs none /tmp/tmpfs
Then use dd to create a file, of size 500M. do a df, and %Use is 49%(machine has 2G) so i guess default size of "ramfs" fs will be half of that, 1G.
But when i delete the file. df doesnt show %Use to be 0%.
du -sk doesnt either.
Not sure what is going on.
Cant the utilization of the ramfs be changed.
Also, from fs/ramfs/inode.c
"* NOTE! This filesystem is probably most useful * not as a real filesystem, but as an example of * how virtual filesystems can be written. "
1. Can i use ramfs for any practical purposes at all ?
2. I was hoping to create a few ram disks, mount them as swaps on Sun machines(so i dont have to buy their expensive memory) and run big simulations. (agreed might not be screaming over NFS)
Also, some articles talk about using ramfs when on a webserver. So it ramfs mostly for read-only stuff rather than read-write.
Thanks,
Regards.
/dev/null
devnull@adc.idt.com
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