Re[2]: [ts-7000] ramdisk

[Angel Rodriguez <>]

Hello,

Writing to the null device is certainly a solution that would not have occurred to me, I like the way you think.

This program is for the capture of seismic data and shipping it with a transport protocol called seedlink.  The packets are numbered and kept track of between the server (7260) and the client.  If the TCP connection is dropped the server makes up the missing data as best it can from what it has placed in the buffer.  So most of the time there is no need for the buffer. The main saving grace of the seedlink protocol is the make-up feature.  There are other simpler protocols that are more UDP like and just send the data, not caring if it arrives.

I tried several things

$ mount -t tmpfs -o size=8m randomword /tmp

mount: Mounting randomword on /dev/rd failed: Invalid argument

$ mount -t tmpfs -o size=8m randomword /tmp

mount: Mounting randomword on /dev/rd/0 failed: Invalid argument

$ mount -t ramfs -o size=8m randomword /tmp

mount: Mounting randomword on /dev/rd/0 failed: Not a directory

$ mount -t ramfs -o size=8m randomword /tmp

it was pretty much the same whether I was in /root or on the debian on the SD card

so I think I will do some test with the 

$ mount -t ramfs -o size=8m randomword /tmp

Thank you so much for the help.

Angel

, July 13, 2007, 4:16:24 AM, you wrote:

>

On Thu, 12 Jul 2007, Angel Rodriguez wrote: > Hi all, > > I am using a TS-7260 with a Debian on the SD card. I am running a > program that writes to a buffer continuously. In order to not trash the > cards I would like to use a ramdisk, or tmpfs or ramfs. > > Can this be done on the 7260. I can see in dmsg that where is says > > RAMDISK driver intialized: 16 RAM disk of 12288K size 1024 blocksize > > But I can not find how to mount, format and use any sort of memory based > disk. I have search the list message base and there are some > references for the 7250, but nothing I can make heads or tail of. > > > Angel why not make it write to /dev/null? If you hand it a tmpfs, it'll  eventually fill up all your ram and the kernel's oom-killer will kill  everything. mount -t tmpfs -o size=8m randomword /mount/point should work fine if you  want to go this route anywayof Use | m("yahoogroups.com?subject","ts-7000-unsubscribe");=">Unsubscribe  .

__._,_.___

SPONSORED LINKS

Single board computer	Hardware	Computer running slow
Linux os	Single board

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: =Email Delivery: Digest | m("yahoogroups.com?subject","ts-7000-fullfeatured");=Change Delivery Format: Fully Featured">Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | =Unsubscribe

__,_._,___