Hi, i have run the free command. Does this show that the system is low in memory ?


total used free shared buffers cached
Mem: 2073236 2051800 21436 0 133644 551716
-/+ buffers/cache: 1366440 706796
Swap: 2096472 69820 2026652


Thanks

What do you think?

yes i think so. that means the physical memory has about 20k left . But i do have quite a bit of swap left. Does that help in any way?

Yes it shows that is low in memory.You have about 20 MB left of physical memory and lot of swap.
You have about 2 GB of p.memory,so what are you doing with that pc of yours,that even that is not enough?

That report shows that you have just 20 MB totally free, but your system is using 538 MB for buffers and another 130 MB for cached objects, and you have not dipped into your swap space to any real extent. No, you're not really low on memory.

Linux will always fill most of available RAM with buffers (it's there and not being used for other stuff, so why not?) and will free up that space if it's needed. I have an RHEL system with 64 GB RAM, and after moving a 300 GB database from one file system to another, Linux had allocated over 58 GB to buffers and the system showed me that only about 200 MB was "free".

In general, cache and buffers help performance. Don't go looking for 600 MB of application code to use that space. You probably have anywhere from 0 MB to 400 MB of memory that's available without impacting performance-- it's entirely dependent on the behavior of your applications.

thanks guys.. i got what you mean.

The number you really want to pay attention to is the one under the free column on the -/+ buffers/cache line. In your case, you have quite a bit of available memory, for as a previous poster said, the kernel will pull from buffers and cache as needed. But until needed, it better serves its purpose in buffers and cache.

it means u r using 1366440 memory and 706796 memory is free,
its the main memory i am telling,who is telling u r low in memory,u have still 700 mb free.......