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I used the 12.04 live cd to install Ubuntu over my Windows 7 partition and deleted everything so I just have Ubuntu on my laptop. But since during the installer I chose the simple "erase entire disk" option, did the installer create a swap partition or is that something I should've done with the "something else" option? Btw I have 6GB of RAM
Source: (StackOverflow)
Is it possible to query through Terminal how much ram my motherboard can take?
I'm looking to see if i can even upgrade.
Source: (StackOverflow)
I'm using Ubuntu 12.10 with Gnome-Classic. I am getting this error frequently and with almost all programs, big and small. When I try to open them, they don't start, and instead I get an error message that says Could not launch 'Program' - Failed to fork child process (Cannot allocate memory). This wasn't a problem until within the last few weeks.
I can not discern any commonality among the programs that cause this error. It seems to be more a matter of time. After my computer has been running for a while, anywhere from a day to a few days, then I can't seem to start any new programs.
The only way I know to prevent this error is to reboot the computer.
Why am I getting this error and what do I do to stop it happening?
I ran the memtest available from the GRUB menu, and it reports no errors, so I don't think this is a hardware failure.
I also ran sudo apt-get check, and no errors were found.
Here is some requested command line output:
$ free -m
total used free shared buffers cached
Mem: 3945 3753 191 0 181 475
-/+ buffers/cache: 3096 848
Swap: 3813 60 3753
$ swapon -s
Filename Type Size Used Priority
/dev/sda6 partition 3905532 61648 -1
$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 31421
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 31421
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
This is the output of ps --sort -rss -eo rss,pid,command | head after the error starts showing up:
$ ps --sort -rss -eo rss,pid,command | head
RSS PID COMMAND
1963400 2953 gnome-panel
155496 4029 banshee /usr/lib/banshee/Banshee.exe --redirect-log --play-enqueued
104944 15765 /opt/google/chrome/chrome --type=renderer --lang=en-US --force-fieldtrials=ForceCompositingMode/disable/GlobalSdch/global_enable_sdch/InfiniteCache/No/OmniboxDisallowInlineHQP/Standard/OmniboxHUPCreateShorterMatch/Standard/OmniboxHUPCullRedirects/Standard/OmniboxSearchSuggestTrialStarted2012Q4/2/OneClickSignIn/Standard/Prerender/PrerenderEnabled/SBInterstitial/V2/SpdyCwnd/cwndMin10/SpeculativePrefetching/Disabled/Test0PercentDefault/group_01/UMA-Dynamic-Binary-Uniformity-Trial/default/UMA-Session-Randomized-Uniformity-Trial-5-Percent/default/UMA-Uniformity-Trial-1-Percent/group_09/UMA-Uniformity-Trial-10-Percent/group_08/UMA-Uniformity-Trial-20-Percent/group_03/UMA-Uniformity-Trial-5-Percent/group_06/UMA-Uniformity-Trial-50-Percent/group_01/WarmSocketImpact/last_accessed_socket/ --enable-crash-reporter=ECE9000094D279FD3B14B35A74BF72CC,Ubuntu 12.10 --renderer-print-preview --disable-accelerated-2d-canvas --disable-accelerated-video-decode --channel=15654.5.89177240
78164 15654 /opt/google/chrome/chrome
74912 19890 /usr/bin/python /usr/share/oneconf/oneconf-service
65476 12419 /usr/bin/perl /usr/bin/shutter
61096 19626 /usr/bin/python3.2 /usr/sbin/aptd
57832 15708 /opt/google/chrome/chrome --type=renderer --lang=en-US --force-fieldtrials=ForceCompositingMode/disable/GlobalSdch/global_enable_sdch/InfiniteCache/No/OmniboxDisallowInlineHQP/Standard/OmniboxHUPCreateShorterMatch/Standard/OmniboxHUPCullRedirects/Standard/OmniboxSearchSuggestTrialStarted2012Q4/2/OneClickSignIn/Standard/Prerender/PrerenderEnabled/SBInterstitial/V2/SpdyCwnd/cwndMin10/SpeculativePrefetching/Disabled/Test0PercentDefault/group_01/UMA-Dynamic-Binary-Uniformity-Trial/default/UMA-Session-Randomized-Uniformity-Trial-5-Percent/default/UMA-Uniformity-Trial-1-Percent/group_09/UMA-Uniformity-Trial-10-Percent/group_08/UMA-Uniformity-Trial-20-Percent/group_03/UMA-Uniformity-Trial-5-Percent/group_06/UMA-Uniformity-Trial-50-Percent/group_01/WarmSocketImpact/last_accessed_socket/ --enable-crash-reporter=ECE9000094D279FD3B14B35A74BF72CC,Ubuntu 12.10 --extension-process --renderer-print-preview --disable-accelerated-2d-canvas --disable-accelerated-video-decode --channel=15654.2.1555888673
42108 3030 /var/lib/dropbox/.dropbox-dist/dropbox
Based on suggestions in the comments and answers, it seems possible the problem is with the Gnome Panel or its applets. Here are the applets I have running:
The applets are Indicator Applet 12.10.1, System Monitor 3.5.92, and a "notification Area". and "date and time", neither of which I can access the version number for.
Here is some more requested command line output:
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda5 19G 12G 6.4G 64% /
udev 2.0G 4.0K 2.0G 1% /dev
tmpfs 790M 1.1M 789M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 2.0G 84K 2.0G 1% /run/shm
none 100M 0 100M 0% /run/user
/dev/sda7 384G 306G 59G 84% /home
mythbuntu@192.168.0.4:/home/mythbuntu 437G 360G 55G 87% /home/dave/Mythbuntu
$ sudo du -csh /var/log
15M /var/log
15M total
Source: (StackOverflow)
The output of free -m command gives:
total used free shared buffers cached
Mem: 595 482 112 0 63 324
-/+ buffers/cache: 93 501
swap: 0 0 0
Which value of used memory is correct 482 or 93?
Source: (StackOverflow)
I would like to know what are the drawbacks of using preload? If there would be no downside, preload would be enabled by default, so I guess there are some.
Okay you need a bit more RAM, but most people have by far more RAM then Ubuntu needs - so what are the downsides of using preload?
Source: (StackOverflow)
I'm going to repeat the title in a longer word. Can a 32 bit Ubuntu address more than 4 gb of RAM on a 64 bit processor?
Source: (StackOverflow)
I have a low profile machine but with a lot of fast RAM, 4 Gb, which is really an amount of memory that i probably will never use, not even an half, since i just use this machine for coding and browsing the web.
The HDD is really slow and so the overall performance are bad when booting, caching or starting new program, I'm wondering if Ubuntu can provide some setting or utility to solve this situation and let my system rely more on the RAM usage.
Source: (StackOverflow)
I read many places that the rule of thumb for swap space is to double the amount of physical RAM. However, 32 GB does seem a LOT. Do I need that much? Do I need it at all with this high amount of physical RAM?
Source: (StackOverflow)
I have used top to see the memory usage at the moment. But I would like to monitor the memory usage over a period of time. E.g start monitoring and then execute a few commands, and final stop the monitoring and see how much memory that have been used during the period.
How can I do this on Ubuntu Server?
I guess I could start a cronjob every 5th second or so, and invoke a command that log the current memory usage in a textfile. But what command should I use to get the current memory usage in a format that is easy to log to a text file?
Source: (StackOverflow)
Is there a way to check the size of the video memory? Specifically, is there one that works accurately for both integrated GPU's as well as PCI/AGP graphics cards?
Many integrated GPU's have dynamically allocated memory, so the solution would hopefully return either the maximum available video memory or the currently allocated amount. For stand-alone NVidia or ATI cards it would obviously return the total amount of physical GPU RAM.
lspci -v does output memory figures, but I do not believe it is the video memory. I suspect the figure reported is some system memory allocation or block or channel size, but I don't know for sure. You can see in these test results that lspci was wrong in 5 of the 6 tests:
** ASUS EN210 PCIe - 1024 Mb ***
01:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 210] (rev a2)
Subsystem: ASUSTeK Computer Inc. Device 8354
Memory at e3000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at e0000000 (64-bit, prefetchable) [size=32M]
*** Galaxy 8400GS PCIe - 512 Mb ***
01:00.0 VGA compatible controller: nVidia Corporation G98 [GeForce 8400 GS] (rev a1)
Subsystem: nVidia Corporation Device 05cc
Region 0: Memory at e4000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at e2000000 (64-bit, non-prefetchable) [size=32M]
*** VirtualBox VM - 10 Mb (headless server) ***
00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter
Memory at e0000000 (32-bit, prefetchable) [size=16M]
*** VirtualBox VM - 128 Mb ***
00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter (prog-if 00 [VGA Controller])
Memory at e0000000 (32-bit, prefetchable) [size=128M]
*** S3 Savage 4 AGP - unknown Mb (old lspci log), but I don't think they made these cards with 128Mb memory! ***
00:01.0 VGA compatible controller: S3 Inc. Savage 4 (rev 06) (prog-if 00 [VGA controller])
Subsystem: IBM Unknown device 01c5
Region 0: Memory at feb80000 (32-bit, non-prefetchable) [size=512K]
Region 1: Memory at f0000000 (32-bit, prefetchable) [size=128M]
*** NVIDIA Quadro FX 1800 integrated - 1024 Mb ***
01:00.0 VGA compatible controller: nVidia Corporation GT215 [Quadro FX 1800M] (rev a2) (prog-if 00 [VGA controller])
Subsystem: Dell Device 040c
Memory at e2000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at e0000000 (64-bit, prefetchable) [size=32M]
Source: (StackOverflow)
What is zeitgeist-fts?!
It's always in the 3 top positions of memory usage (competing with Firefox and Compiz) . After a fresh boot it uses about 30 MB, but after some hours or a day, it goes above 300 MB and stays there !
The file of this process is located at /usr/lib/zeitgeist/zeitgeist-fts. I don't know what this thing does, but if it doesn't break any functionality, I would be really happy to remove it, because memory capacity is very precious to me.
Edit: I'm using Unity desktop on Ubuntu-12.04.2 LTS.
Source: (StackOverflow)
About 3 to 4 hours after turning on my PC, compiz 'memory usage' rose from 300MB up to 1.5GB!
What is happening? What is wrong?
Here is the screen-shot from system monitor:
Source: (StackOverflow)