We recently bought an i7 X58 server with 6 memory slots. Since it was cheaper, we opted to get the min memory configuration with the machine (3x1Gb) and then buy 3x4Gb separately. It seems a shame to waste the 3Gb, so I'm wondering how to "mix" the memory without sending everything into single channel mode. The information I've read is rather confusing, and often contradictory.
View 1 RepliesI am wondering just how the triple channel memory architecture, like found in various socket 1366 CPUs, including i7, works. For maximum speed in close locality accesses, in theory it would need to interleave at the memory access width (64 bit?).But interleaving at a multiple of 3 is what looks odd. A multiple of 2 or 4 would be trivial, by just using the lowest 1 or 2 bits (of the access word address), to select with part of the interleave stride. But a multiple of 3 would mean doing an arithmetic division by 3 and using the modulus, for each memory cycle. Can it really do that, that fast?
Or is something else going on where it approaches having a perfect interleave, but not quite, in order to keep the operation speed at maximum (e.g. some simpler kind of arithmetic that can keep up with a slightly slower memory speed that results from a less than perfect interleave)?
Also, I was reading somewhere where someone suggested that if you put 2 DIMMs in one channel, and 1 DIMM each in the other two channels (where all DIMMS are the same size), it will operate in triple channel mode for 3/4 of the memory address space, and in single channel mode for the remaining 1/4 of memory. Is it designed to do that? Is there an advantage doing that instead of putting 2 DIMMs in the 1st channel and 2 DIMMs in the 2nd channel, and leaving the 3rd channel empty (e.g. getting only double-channel speed, but doing so for all of memory)?
IWSTM that if I'm running multiple threads or hyperthreads, these may be accessing memory at sufficiently widely arranged locations (depending on virtual memory page placement) that even if there is no interleave at all, there can be some improvement.
Until now I have been running a single threaded cpu at single channel speed but yesterday I bought a 3.2 gig p4 for 20 bucks. It has hyperthreading and an 800 mhz fsb which supports dual channel speeds on the chipset. It hasn't arrived yet so I haven't put it in the system but what I would like to know is whether 11.4 work properly with these changes, and will it detect and implement them properly or will I need to reinstall it?
View 5 Replies View RelatedPC seems to run fine in single channel mode but monitor reports no input in dual channel mode and memtest86+ lists from 1-3 errors per pass in single channel mode. Motherboard (Gigabyte P43T-ES3G) can't be set for the 1.65 volts required by the RAM (2x2 of OCZ3P1333LV4GK PC3 10666). The mobo voltage choices are 1.6 or 1.7 volts. I have tried both and increased the MCH voltage from 1.1 v to 1.2 v, but so far can't get it to run in dual channel mode at all and single channel mode seems to run fine but I still get errors in memtest86+. Also tried optimized Bios settings and loosened memory timings (from 7-7-7-16 to 8-8-8-27 and tRFC 60 to 70) and reset Command Rate from 0 to 2. CPU is Core 2 Quad @ 2.4 Ghz, PSU is rated at 400 watts, Video card is Gigabyte GT220.
View 2 Replies View RelatedI'm trying to crack my wep password just for kicks, but I keep running into the same error. When I try to use airplay-ng for the packet injection, it always gives me the error " wlan0 is on channel -1, but the AP uses channel 6". I've tried setting wlan0 to channel 6 manually, but that doesn't help. I spent a while searching for a solution, but it seemed like each page had a different, usually highly complex solution, that still doesn't work. I have the most recent drivers for my wireless card, and it meets all the requirements. So, is there any solution to this that will actually work?
View 9 Replies View RelatedThinking about building a new system, with 4GB of DDR3 RAM. I am just wondering, which would you prefer: Dual-channel DDR3 or Quad-channel DDR3? Does one have better speed performance over another? Will one way keep your system cooler?
View 2 Replies View RelatedI read somewhere that it's not a good idea to mix the use of apt-* (eg. apt-get, apt-file, etc.) and "aptitude". I guess they're not using the same database to keep track of things.Problem is, they don't offer the same features:"apt-get safe-upgrade" doesn't exist, so have to use "aptitude safe-upgrade"."aptitude show/list mypackage" doesn't show the files that an uninstalled package (ie. still in depot) contains, so have to use "apt-file show mypackage".
View 9 Replies View RelatedIs LVM sensitive to mixing different drives w/different specs? If I mix IDE and SATA drives are there issues?
View 1 Replies View RelatedI want to both talk and play songs on my machine which will be broadcasted to an Icecast machine. Any pointers on how to pull this off?
View 3 Replies View RelatedI have 2x 1.5TB hard disks and I'm going to buy a new 2TB drive soon. First though I just wanted to check that I could partition off the first 1/4 to 1/3 of the 2TB drive (leaving 1.5TB or more free) and install Debian to that part, then use the remainder of the disk in combination with the 2x 1.5 TB drives in RAID 5? i.e. can you mix whole drives and with partitions from other drives in RAID 5 and/or is it best to just stick with complete drives for the RAID array?I only have room for 3 drives in the small mATX case that houses my NAS device and I want to maximise storage capacity and minimise expense.
View 2 Replies View RelatedWich software are the best for music making and mixing on Linux? Something equal to Traktor or VirtualDJ on win?
View 3 Replies View RelatedI don't want to screw up my system, but I need newer versions of packages then the ones in the apt repos. What is the community consensus on the best way to mix apt package management with building bleeding edge packages from source?
Should I build the source into a package and install it with apt? Should I avoid make install?
I would also like to be able to use multiple versions of the same package, and have some sort of sym link or something to determine which version gets executed.
A while ago I reinstalled Ubuntu on my PC when I felt that Windows was about to give up. I'm glad I did. A lot of the applications I had on my Mac had equivalents on Linux, I was delighted and I haven't been needing Windows at all.
Up until recently everything was working fine, but now I think Linux is mixing up my Sound Card with my TV Tuner. When I call someone using Skype, it ends up airing white noise, however, if I've watched TV prior to that, it ends up airing the sound from whatever channel I was watching last. If I turn on the video calling function (despite the fact that I haven't got any webcam plugged in) it ends up airing video from that same channel.
It just started doing this randomly, and as I did some experiments, I discovered that it does this with all audio-input applications. (Sound Recorder etc,)
So I installed Pulseaudio device manager, and I discovered that my soundcard isn't listed under output devices.
This may be due to a case (non-)sensitivity issue. I have two subfolders on the mail server called "Spam" and "spam". On the mail server (Dovecot), these are directories ".INBOX.Spam" and ".INBOX.spam". The issue I am seeing is that the information shown in the index area of Evolution's window has, for some mail, information that belongs to other mail in the other folder. But when I click on that line, I see the corresponding correct email that should be in that position.
Because this happens to be spam, I just went ahead and trashed everything in one of the folders. That one action trashed everything in both folders.Is there a way to tell Evolution to dismiss everything it thinks it knows about the state of mail on the mail server and re-acquire it all? Or could this be an IMAP server issue with Dovecot?
I currently have a mirror raid array with 2x 1TB HD's (Western Digital Caviar Green WD10EADS SATA). They are both the standard 512 byte sector HD's. I just ordered a new 1TB Hard Drive (Western Digital Caviar Green WD10EARS SATA) as I want to wipe the current mirror raid and use the 3 disks in a raid 5 array.
But to my suprise, the new 1TB HD is an "advanced format" HD with 4k byte sectors... Am I screwed or can this 4k byte sector HD be used in a software raid 5 array along with the 512 byte sector hard drives?
(The WD hard drive says you can jumper it to work with XP which can only use 512 byte sectors... there's also a utility you can run that does something to make it compatible with XP too.... Makes me wonder if these new drives are backwards compatible?)
I have Ubuntu Server 8.04 (LTS) installed and running well, but there a few packages that I'd like to upgrade, without upgrading the entire system (e.g, apache2). Is it possible to include both the Hardy (8.04) and Lucid (10.04) distributions in sources.list? Is that even safe? By the same token, can I add a Maverick repo to my list? I'm using "apache2" as an example, but this is more of a general question.
How should situations like this usually be handled, when only a select few packages would profit from an upgrade that resides in a different Ubuntu release?
On a similar note, is it possible to install two different versions of the same package using the APT tools? Let's say I want two different versions of php5 -- how would I go about doing that?
Starting over, based on this thread: [URL] And my problem which is the same! I have the same audio chipset and experienced the same issues. I hope there is nothing about that chip. I tried with XFCE4 on Slackware 13.1 and now KDE4 on Debian, I found a workaround on XFCE by installing gstreamer and using it instead of xine as the phonon backend. That workaround apparently doesn't work on KDE.
Something interesting (also in the original thread): Software mixing through alsa DOES work since I can play several files in aplay (command line) or xine (gui standalone) simultaneously. I don't have another soundcard. Should I install pulseaudio anyway? Switching to OSS ?
Why are the 'defense' method calls actually using the 'offense' methods.Also, is there a way to remove the commented base classes for 'Player' so that the casting isn't necessary?
Code:
#include <iostream>
class Offense
[code]...
How is this supposed to work out? I noticed some distros are really good about recognizing your other linux distros and some not. They keep recognizing windows, but not other linux distros. Also, I have run into a few problems when my operating systems were on different hard drives. I have my operating systems running from a small 250gb laptop hard drive with special mounting and am using my TB hard drive for internal storage /data.However, my last attempt at installing a linux partition on the TB hard drive with Windows and another linux partition on the laptop hard drive didnt work out so well. Updating grub via the command line didnt sort this out. Sudo su root Apt-get update grub (or grub update) or whatever didnt work before when I tried it.
View 4 Replies View RelatedI want to be able to open a file (support for .mp3 and .ogg a must) and add effects, change pitch and tempo, add beats (either default or midi created), mix with other songs (or clips from), be able to change levels of the high/mid/low, alter gain and frequencies ... all that fun stuff.
programs I already have are:
MixXx
LMMS (Linux MuliMedia Studio)
mhWavedit
-and-
gAlan
And it doesn't seem that any of those have the features I am looking for. I am running Zorin OS 4 (ubuntu 11.04 based) and Dreamlinux 3.5 (debian- unsure which release) on a fujitsu lifebook 5 series - S6240 (it's kinda old 2005).
I understand it is not generally a good idea to mix 13 and 13-current packages but I am installing OpenProj which requires JDK and the installed JRE (6-18) is up-level from 13's JRE (6-16) and back-level from the 13-current JDK (6-19). Presumably JRE and JDK should be at the same level. Would it be better to take both JRE and JDK to 13-current (6-19) or to take both to 13 (6-16)?
View 3 Replies View RelatedI am using malloc and frees a lot in my program. It shows its allocated but when i remove it doesnt show as the memory is removed(I am using the top command to view VIRT memory usage). If this continously grows what would happen to my program (Will it go out of memory?)
View 4 Replies View RelatedFedora 14 xfce
HP Mini 210
I am looking to buy some memory for my netbook. Currently I have 1 GB of DDR3 memory. However, the specification says that 2 GB of memory is the max. However, when I do the following it says that 4GB is the max:
[Code].....
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.
View 1 Replies View Relatedlet me know how to clear cache memory ( RHEL 5.1 ) as it consumes almost 100% physical memory.
View 3 Replies View RelatedI 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.
View 8 Replies View RelatedI am new to C and linux. My code below does arbitary writes but I cant figure out where or how it does it.
I am calling the insertNode() function with seq = 'MISSISSPPI$' and alphabets = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ$'
Code:
Weird behaviour I should mention is that when I check for NULL pointer in node->child[index], the unassigned values are not null anymore, they point to arbitary memory.
we found that if we use 'top' to show the memory usage of a server (SuSe Linux 10), we can get virtual memory usage as well as 'Resident memory' usage. For virtual mem or a particular process, it is around 1.1GB, which is large but for resident memory, it only consumes 300MB. Are there anyone who knows what the differences are? I would also like to know whether the difference (1.1GB - 300MB) = 800MB are actually available for use by other applications in the system.
View 1 Replies View RelatedI get this error when I run "sudo apt-get install python-software-properties"
Preconfiguring packages ...
dpkg: unrecoverable fatal error, aborting:
fork failed: Cannot allocate memory
E: Sub-process /usr/bin/dpkg returned an error code (2)
I'm trying to install deluge via ssh and my vps has 512mb ram and is only using 11% of it prior to running the code.
How do I write a script for my Linux that can show me total memory vs used memory and have it email me results if it's over 70 percent?
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