Memory (RAM) problems?
Hi, I'm a litlle worry about the memory (RAM) used by my machine. I'm using slink ( recompiled kernel 2.0.36) and recently I realized that I have my memory full very frecuently, even when running only a few programs. Actually, the buffer and the cache use a lot of memory. I have 256 Mb, and a typical (not the most terrible) output of 'cat /proc/meminfo ' looks like : total:used:free: shared: buffers: cached: Mem: 263127040 221241344 41885696 47808512 95961088 79933440 Swap: 133885952 286720 133599232 MemTotal:256960 kB MemFree: 40904 kB MemShared:46688 kB Buffers: 93712 kB Cached: 78060 kB SwapTotal: 130748 kB SwapFree:130468 kB Sometimes, there are a release of memory (e.g. when I run a heavy process) , but the cache an buffer slowly increase their memory usage. Is it normal, or I have a serious problem? Maybe a not well tuned kernel? Is there a way to release the memory used by the buffer and/or cache? thanks carlosb
Re: Memory (RAM) problems?
This is normal, and done by kernel to keep memory full all the time, so access time to binaries is less (so your machine works faster). This can only be a problem on systems with low RAM (I remember having 48M, and having it all full.going into swap even when I was just running X alone). If you don't like it, there are 2 files you can tweak: /proc/sys/vm/pagecache and /proc/sys/vm/buffermem Read about them in kernel docs, but with 256M you have nothing to worry about. Just turn off the swap, and never touch it again. Andrew - Andrei S. Ivanov [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] http://arhses.dyndns.org -| http://scorpio.dynodns.net -| http://scorpio.myip.org-| --All the pages bundled together. UIN 12402354 For GPG key, go to above URL/GnuPG -
Re: Memory (RAM) problems?
Buffers: 93712 kB Cached: 78060 kB Is it normal, or I have a serious problem? Maybe a not well tuned kernel? Is there a way to release the memory used by the buffer and/or cache? Don't worry.. Thats perfectly normal.. The caches speed up the system, and it frees mem there whenever a program needs more. /Jonas
Re: Memory (RAM) problems?
I think that isn't normal (normally on PC a good system with XWin etc. uses something like 64 Mb of RAM). You must see which apps use too much memory (I suggest you to see kernel modules such like NFS). Which system are you using? On Tue, 28 Mar 2000, Carlos Bustamante G. wrote: Hi, I'm a litlle worry about the memory (RAM) used by my machine. I'm using slink ( recompiled kernel 2.0.36) and recently I realized that I have my memory full very frecuently, even when running only a few programs. Actually, the buffer and the cache use a lot of memory. I have 256 Mb, and a typical (not the most terrible) output of 'cat /proc/meminfo ' looks like : total:used:free: shared: buffers: cached: Mem: 263127040 221241344 41885696 47808512 95961088 79933440 Swap: 133885952 286720 133599232 MemTotal:256960 kB MemFree: 40904 kB MemShared:46688 kB Buffers: 93712 kB Cached: 78060 kB SwapTotal: 130748 kB SwapFree:130468 kB Sometimes, there are a release of memory (e.g. when I run a heavy process) , but the cache an buffer slowly increase their memory usage. Is it normal, or I have a serious problem? Maybe a not well tuned kernel? Is there a way to release the memory used by the buffer and/or cache? thanks carlosb -- Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] /dev/null
Re: Memory (RAM) problems?
I think this is totally normal. Thats why linux is fast. And if you need more memory for applications it gets freed from cache or buffers. No need to worry. hth, Rolf On Tue, 28 Mar 2000, Carlos Bustamante G. wrote: Hi, I'm a litlle worry about the memory (RAM) used by my machine. I'm using slink ( recompiled kernel 2.0.36) and recently I realized that I have my memory full very frecuently, even when running only a few programs. Actually, the buffer and the cache use a lot of memory. I have 256 Mb, and a typical (not the most terrible) output of 'cat /proc/meminfo ' looks like : total:used:free: shared: buffers: cached: Mem: 263127040 221241344 41885696 47808512 95961088 79933440 Swap: 133885952 286720 133599232 MemTotal:256960 kB MemFree: 40904 kB MemShared:46688 kB Buffers: 93712 kB Cached: 78060 kB SwapTotal: 130748 kB SwapFree:130468 kB Sometimes, there are a release of memory (e.g. when I run a heavy process) , but the cache an buffer slowly increase their memory usage. Is it normal, or I have a serious problem? Maybe a not well tuned kernel? Is there a way to release the memory used by the buffer and/or cache? thanks carlosb -- Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] /dev/null
