Debian :: How To Configure Services For Minimal Memory Usage
Jul 24, 2010
I have a home server set up with samba, proftp, and the torrentflux webUI via apache and mysql. To the best of my ability, I have stripped the system of any unnecessary software. After a fresh reboot the system uses around 250 mb of memory, which to me still seems like a lot, and after it has been on for a few hours with torrents downloading, the memory usage will steadily climb to and stay at 2 gb! Using top shows that the processes using the most memory are python, mysqld, and apache2. What the heck is going on?
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Jan 8, 2011
I'm looking for a good tutorial to install minimal Debian with Gnome on USB Memory stick and make it bootable.
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Mar 12, 2011
I've installed my debian sid about one month ago (first xfce, next gnome) but noticed that it's kind of really slow. The upgrades take ages, launching (and using) firefox takes so much time,... In comparaison to my ubuntu, archlinux (on the same computer) or previous installation of debian there is clearly a problem somewhere.Today I tried to do a "top" sorted by mem usage : 3.5% xulrunner-stub, 2.1% dropbox, 1.4% aptitude (doing upgrade), 1.4% clementine,... nothing terriblebut still I've 2.7Gb or RAM used (more than 50%)
$ free -m
total used free shared buffers cached
Mem: 3967 26851282 0 79 1938
[code]....
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Mar 16, 2011
I use a Debian Squeeze system running off a flash drive, i.e. based on a custom Live image running in persistent mode. It runs great and I am grateful for the existence of Debian . However, I have a question. A lot of the machines I use this pen drive on are quite old, often with 512 MB RAM and old processors. I specifically built my system using XFCE and lightweight apps off an initial live image using the standard-x11 package list (basically just Xorg with drivers and the base system). At first things ran very well, blazing fast even on the oldest systems and could comfortably run Firefox along with LibreOffice side by side (I need LO as all of my colleagues use Word docs, often with track changes, which Abiword can't handle properly). However, over time, I've found that memory usage has risen, tot he point where Firefox is now automatically killed on the older systems every time I start LibreOffice.how does one figure out why memory usage is going up? I've checked for inessential services and turned them off with "insserv -r". I've used only lightweight apps, as mentioned before. Are there other general tips on reducing memory usage?
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Mar 15, 2010
I was trying to get the status of memory usage and disk usage using sigar in windows and ubuntu. done this in windows by just copying the sigar library into jdk library. But i was unable to do so in ubuntu. I've copied the library to java-6-sun library but still can't run the program.
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Jun 28, 2013
I have a java program that runs on Debian as a background processor. Yesterday the Java program stopped running. I looked at the memory usage, the system only had 5MB memory left, so my guess is that the java program ran out of memory to use.
However, after we restarted the java program, we could see that the free memory count started to go up. It kept going up from 5MB to over 400MB. The increase of memory happened slowly, when I measured it, I could see that with each minute passing by, there were a bit more memory added into the free memory pool, and meanwhile, the java background process was running.
I wonder why this would ever happen. It's as if our java program first brought the machine done because it consumed all the memories, then after restart, it starts to give back memories.
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Mar 18, 2011
I have a computer with 16GB of ram. At the moment, top shows all the RAM is taken, (NOT by cache), but the RAM used by the various processes is very far from 16GB.I have seen this problem several times, but I don't understand what is happening.My only remedy so far has been to reboot the machine.
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May 3, 2011
I am looking for free database that has low memory usage and innodb and memory like engins that has C API and support trigger and client/server support for using in embedded linux systems.
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Jul 23, 2010
I'm using debian 5 x64 with xfce.Is there a way to configure (start/stop/restart) services (especially Apache2, mySQL and PHP) using a graphical or cli tool? I tried to use sysv-rc, sysv-rc-conf, rcconf and rc-conf in the terminal but Bash didn't find them (Although Synaptic show that sysv-rc is installed).
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Jan 13, 2009
I am sure that all of us know the result of top command in linux. i want to get the value that the top command return as CPU usage, memory usage. so how do i do(programming relation)?
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Aug 6, 2010
I've come across a really strange issue with one of my RHEL servers. The "free" command shows that 7019 MB of memory are actually in use by my system, but when summing up the actual usage (or even virtual usage like the example below) it doesn't add up - the sum is far less than what is reported by "free":
Code:
[root@server1 ~]# free -m
total used free shared buffers cached
Mem: 12011 7946 4065 0 4 23
-/+ buffers/cache: 7919 4092
[code]....
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May 9, 2010
so my server is doing fine, but there is one odd thing I would like to fix. When I start and stop services, the CPU is maxed out for about five seconds each time. The services start the same speed, but it still does this. Small things like lm_sensors don't do this, just things like httpd and sendmail. THis server was upgraded to Fedora 11 with a netinstall CD a few months ago.
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Jul 19, 2011
In system monitor, there are numerous processes. Some such as metacity and nautilus are using 12-21 mb memory. Since my server is a 512 mb computer, which services or processes can I safely remove or end ?
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May 11, 2010
Is this normal? I check system monitor and the top most is xorg followed by compiz. When I first started with 10.04 few days ago it was around 300-500MB.
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Jan 11, 2009
i am wondering How to get usage of CPU, Memory in linux environment? So would you able to tell me the ways?
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Jun 2, 2010
I am having a few problems with a red hat box involving memory usage. I have 64Gb memory and 'top' tells me I'm using 60Gb of it, but if I add up all the '%MEM' figures I get no more than 20%. Where is the other 80% ?
We have an ORACLE instance that is using shared memory but this is ceilinged at 45Gb. That means there is about 15Gb unnaccounted for . What utilities can I use on red hat to ascertain memory usage other than 'top' ? Any better ones, more detailed, looking at shared memory etc and swap ?
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Sep 17, 2009
I'm trying to understand the performance of my machine and memory usage just isn't adding up. When I run top it will typically show 301M of 308M used but the total of everything in the RES column is no where near 300M and the total of %MEM column isn't more than 20-30%. So how do I figure out what is using all the memory? Then is there some way to control it to optimize performance?
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Apr 13, 2011
Under SuSE, (Mem: 31908592k total, 31421504k used,) how do i know which process or program using my memory?
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Apr 15, 2011
I am a bit worried about my linux vserver box. No more memory is left. To investigate this issue, i was looking at "top". But it deeply confuses me. It seems that no more memory is left, altough the process list in top never adds up to 100%
[Code]...
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Jul 11, 2010
My problem seems to be very simple, it's high memory usage. I occasionally will use movie player to watch a few shows and I use firefox as well. My memory usage starts out real small about 500 mb but after using firefox lightly and movie player it jumps to almost 2 gigs and this is after they've been closed what gives? I've attached an image so you can see what I'm talking about.
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Aug 16, 2010
I've been having some problems with Lucid; all my applications seem to be hogging memory like no tomorrow. Within about 15 minutes from booting the system, processes like Google Chrome, Nautilus, Python, Pidgin all start to take seemingly too large amounts of memory.
Chrome is the worst one, easily shooting over 200-300MB of my 2GB's of RAM. I would have reported this as a bug in Chrome itself, but my other applications seem to share the problem to some extent. Also: My colleague has identical hardware and identical versions of Ubuntu / Chrome, while he has no memory problems whatsoever.Currently I am running Chrome, Geany, Pidgin, Thunderbird and FileZilla. For this and itself, Ubuntu now consumes 1.8GB of RAM (that's including 500MB cached).
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Jun 27, 2011
If i download something using KTorrent or Transmission, my RAM Memory ( 2G GB ) is filling up and my PC dies slowly.
Only with saidar i can see this, if i use System Monitor, things look normal.
I'm using Ubuntu 10.10 and i'm also having this problem when i'm watching movies.
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Feb 18, 2010
Memory of my Linux database servce is all used up. I first noted that this morning and rebooted the box. 5 hours later, it saw used up again. I want to find out which process is responsible for using most of the memories. What Redhat Linux utility can list processes sorting by their memory usage, like the Windows task manager?free and vmstat - summary but not for each processtop appears to be infomative, but sum of non-zero %MEM never add upp to 100
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Mar 31, 2010
Maximize Linux Memory usage
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Jul 15, 2010
I wanted to know the best way to monitor memory usage, us space and processes and receive an email if a problem occurs?
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Jan 14, 2011
check out the system monitor you can see the memory usage for python climbing.
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Aug 13, 2010
My memory usage keeps building up and up as time goes by, when it hits 100% it logs me out. I have a tad over 9 Gib in swap, that is how it was set up when I did auto install and let it do the partitions. I have 4Gib memory. When I first log in it shows about about 800+ MB being used and starts adding more from there. I can run applications for about 6-8 hours before it hits the 100% marker. At first I was blaming this on the video player, but when I put on a play list each song seems like it gets stuck in memory also adding about .02% per song to max memory.
This seems to pertain to each application I do. Uploaded with ImageShack.us. This pic shows my Computer setting and usage through system monitor and conky script. In another note, I never see my Swap partition being used at all. I am real green to linux and not sure if I was suppose to turn something on. In the partitioner it shows it being mounted and as swap.
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Jan 29, 2010
In linux, how can I display memory usage of each process if i do a 'ps -ef'?I would like to the 'virtual memory', 'res memory', 'shared memory' of each progress. I can get that via 'top', but I want the same info in 'ps -ef ' so that I can pipe the output to 'grep {my process name}'.
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Dec 18, 2010
I"m unable to find the memory usage however top shows me the following results.
Tasks: 90 total, 2 running, 88 sleeping, 0 stopped, 0 zombie
Cpu(s): 21.1%us, 1.4%sy, 0.0%ni, 74.0%id, 2.4%wa, 0.0%hi, 1.0%si, 0.0%st
Mem: 8313376k total, 7969976k used, 343400k free, 185496k buffers
[code]....
and free shows the following.
total used free shared buffers cached
Mem: 8118 7764 354 0 181 7335
-/+ buffers/cache: 247 7870
Swap: 4000 0 4000
Total: 12119 7764 4354
how can i find the usage of memory which is being showed by top and free.
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Jan 9, 2011
I have a toy Linux box with 256mb RAM running Ubuntu 10.04.1 LTS. Here is the output of free -m:
total used free shared buffers cached
Mem: 245 122 122 0 19 64
-/+ buffers/cache: 38 206
[code]....
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