Amount of free memory available in system?
Is there a simple sysctl or a command line utility I can use to determine how much free memory is available in a system? I've got an embedded application that has *very* limited memory, and I was trying to figure out how much memory was available for the userland applications. 'top' has something, as well as 'vmstat'. Unfortunately, because of the limited amount of disk space available on this box, I don't have access to either one of those. Is there a sysctl I can use to determine how much free memory is available on the box? Note, I've disabled swapping, since the *ONLY* thing running is an MFS at the point I'm checking. /stand/sysctl vm.defer_swapspace_pageouts=1 /stand/sysctl vm.disable_swapspace_pageouts=1 Nate To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-hackers in the body of the message
Re: Amount of free memory available in system?
On Sat, Jan 12, 2002 at 11:30:27AM -0700, Nate Williams wrote: Is there a simple sysctl or a command line utility I can use to determine how much free memory is available in a system? I've got an embedded application that has *very* limited memory, and I was trying to figure out how much memory was available for the userland applications. 'top' has something, as well as 'vmstat'. Unfortunately, because of the limited amount of disk space available on this box, I don't have access to either one of those. Is there a sysctl I can use to determine how much free memory is available on the box? Why not look how top and vmstat calculate it and do that in your code. Kris msg30933/pgp0.pgp Description: PGP signature
Re: Amount of free memory available in system?
Is there a simple sysctl or a command line utility I can use to determine how much free memory is available in a system? I've got an embedded application that has *very* limited memory, and I was trying to figure out how much memory was available for the userland applications. 'top' has something, as well as 'vmstat'. Unfortunately, because of the limited amount of disk space available on this box, I don't have access to either one of those. Is there a sysctl I can use to determine how much free memory is available on the box? Why not look how top and vmstat calculate it and do that in your code. I was hoping to get do 'sysctl foo.bar.bletch' to tell me information. Nate To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-hackers in the body of the message
Re: Amount of free memory available in system?
On Sat, Jan 12, 2002 at 04:21:58PM -0700, Nate Williams wrote: Is there a simple sysctl or a command line utility I can use to determine how much free memory is available in a system? I've got an embedded application that has *very* limited memory, and I was trying to figure out how much memory was available for the userland applications. 'top' has something, as well as 'vmstat'. Unfortunately, because of the limited amount of disk space available on this box, I don't have access to either one of those. Is there a sysctl I can use to determine how much free memory is available on the box? Why not look how top and vmstat calculate it and do that in your code. I was hoping to get do 'sysctl foo.bar.bletch' to tell me information. vm.stats.vm.v_free_count will give you a somewhat useful number. As well there are sysctls for active, inactive, and cached (and wired), which you could use to get a more complete picture of whats going on. `sysctl vm` dumps a lot of useful information. I hope that helps. -- Chad David[EMAIL PROTECTED] www.FreeBSD.org [EMAIL PROTECTED] ACNS Inc. Calgary, Alberta Canada Fourthly, The constant breeders, beside the gain of eight shillings sterling per annum by the sale of their children, will be rid of the charge of maintaining them after the first year. - Johnathan Swift To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-hackers in the body of the message
Re: Amount of free memory available in system?
Pardon me, I just realized I misread the original question. Never mind. Ken Bolingbroke [EMAIL PROTECTED] On Sat, 12 Jan 2002, Ken Bolingbroke wrote: On Sat, 12 Jan 2002, Nate Williams wrote: I was hoping to get do 'sysctl foo.bar.bletch' to tell me information. From: http://people.freebsd.org/~adrian/sysctl.descriptions hw.physmem: Physical memory in system hw.usermem: Physical memory avaliable to user processes Ken Bolingbroke [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-hackers in the body of the message To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-hackers in the body of the message
