I am using MonoDevelop with SQL Server whenever I try to do use the Select method on the Datatable object the performance really detoriates it is 3 times slow than it is with .Net. Are there any work arounds?
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I am trying to perform a hard drive installation of RHEL 5.5. I specify the installation method and the partition and directory holding the ISO image in /etc/grub.conf
Code:
However, I am still presented with the "Installation Method" and "Select Partition" screens when anaconda runs. Is the syntax of the repo boot option correct?
I have the following code in the TCP server:Quote:
while (my $from_who = accept(CLIENT_SOCK, TCP_SOCK)) {
my $data = '';
#my $previous = select CLIENT_SOCK;
[code]...
I have CentOS 5.4 and have installed CPAN GD module.Installation messages seemed clean and successful.When I try to create a png file, perl gives the error message :
Can't locate object method "png" via package "GD::Image" at
/usr/lib/perl5/vendor_perl/5.8.8/DBD/Chart/Plot.pm line 1276 (#1)
(F) You called a method correctly, and it correctly indicated a package
functioning as a class, but that package doesn't define that particular
method, nor does any of its base classes. See perlobj.
Also, the following perl one-liner gives answer "No".
perl -e 'use GD; $im=GD::Image->new(); print $im->can("png") ? "Yes" : "No" , "
";'
I suspect that this GD module requires Image::Magick, but that borks on installation.
Magick.xs:2344: warning: implicit declaration of function �MagickCoreGenesis�
make: *** [Magick.o] Error 1
JCRISTY/PerlMagick-6.59.tar.gz
[code]...
Recently i install a package when i input the command make and make install the above error appear, will i need to upgrade autoconf as well as other autotools? my host os is redhead9.0-linux 2.4.20-8,
View 1 Replies View RelatedI've been using the PPA version of banshee, and I got this error - just wondering if anyone else has it too! I'm able to play a song, but when the song finishes and the next one starts I get this error: Banshee Encountered a Fatal Error Object reference not sent to an instance of an object Error details:
Code:
An unhandled exception was thrown: Object reference not set to an instance of an object
at Hyena.Gui.Theming.GtkTheme.GetCairoTextMidColor (Gtk.Widget) <0x00017>
at Banshee.NotificationArea.NotificationAreaService.get_TextLightColor () <0x0002f>
at Banshee.NotificationArea.NotificationAreaService.MarkupFormat (string,string[]) <0x00043>
at Banshee.NotificationArea.NotificationAreaService.GetByFrom (string,string,string,string) <0x000d7>
[Code]....
Trying to setup WebDav on Ubuntu server. Stuck on the last few steps of the setup. Trying to test the setup with cadaver, but reach this error:
cadaver http://10.0.6.103/webdav
Could not access /webdav/ (not WebDAV-enabled?):
405 Method Not Allowed
Connection to `10.0.6.103' closed.
[Code].....
I created a cron and a shell script but I'm not sure how to automatically handle the mysql password prompt. I'm sure it's simple but having trouble figuring it out
View 6 Replies View RelatedOnly ones I can think of seem overly complex, and I'm sure there is a simple solution I am overlooking. I have a class, it has a member who is an object. This object needs to be able to represent an object of different types.
[code]...
Where "surface" could be several different types, which will be set during execution. Hope this is clear enough. I have tried using templates but am getting "data member cannot be a member template". Either I have incorrect syntax, or am not implementing it right. another solution would have one class containing definitions of all possible shapes, But this would take up extra memory. Other solutions I thought of seem too round-about, and seems there is a simpler solution that I have overlooked.
I recently installed a new home backup server with Ubuntu 9.10 x86_64 using the alternate CD. I used the CD's installer to partition my disk and created a software RAID 5 array on 4 disks with no spares. The root file system is located outside the raid array.
At first the array performed nicely but as it started to fill up, the io performance dropped significantly to the point where I get a transfer rate of 1-2MB/s when writing!
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Recently set up a webserver at Linode. I've been reading alot about tuning the mysql, but other than hitting web pages and seeing how fast they load, how do I tell how well my tuning is working?
View 2 Replies View Relatedhow do you measure performance on a computer?I know there are benchmark sites, they do give a general guidance in selection. However, I want to learn how to build a cluster from commodity parts and want to make sure it is equivalent to a specific server in performance.I know clustering is a bit abstract and it will be difficult to measure direct performance and compare it to one specific board. I am fine with that
View 5 Replies View Relateddns cache serThis is probably more of a network question but I figured some one who is a network expert might know. Currently my organization has DNS servers. But my questions is would setting up a cache server improve the performance any? When I first thought about it i thought probably not. But since it stores information in ram that made me think maybe it would improve network performance a little.
View 3 Replies View RelatedI'm currently experiencing some serious issues with WRITE performance on a RAID-1 array. I'm running Ubuntu 10.04 64 bit server with the latest updates. To evaluate the performance ran the following test: [URL]... (great article btw!) Using dd to measure, write performance is only at 8.7 MB/s. Read is great though at 74.5 MB/s. The tests were ran straight after rebooting and I have not (YET!) done any kernel tuning or customization, running the default server package of the Ubuntu kernel. Here's the motherboard in the server: [URL]... with a beta bios to support drives over 300GB.
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As you can see from the bo column there is definitely something stalling. As per top output, the %wa (waiting for i/o) is always around %75 however as per above, writes are stalling. CPU is basically idle all the time. Hard drives are quite new and smartctl (smartmontools) does not detect any faults.
I built my own file server based on the Intel Atom 525 and Ubuntu 11.04 (amd64):http:[url]....It has 2 2TB Western Digital Green drives connected via SATA.Internal file transfers (disk-to-disk) using Nautilus zip along at 80 Mb/sec. Over SAMBA, however, I'm getting 35 Mb/sec. Other than creating the shares, I haven't modified smb.conf.have a gigabit network. I've run atop on the receiving computer and it isn't being taxed. At 35 Mb/sec the file server is also not being taxed.
Should I be focusing on testing the onboard NIC (RealTek 8111E) in the file server or looking at SAMBA?
I'm currently trying to use preseed to build an ubuntu server box over the network. I'm using the netboot.tar.gz from the karmic main mirror. By default it installs the standard kernel (linux-2.6.31-16-generic), and I want to use the server kernel (the metapackage linux-server which should install linux-image-2.6.31-16-server). I'm using a minimal build:
Code:
tasksel tasksel/first multiselect minimal As far as I can see all the other preseed settings are close to defaults. I've tried setting both of the following lines (separately and together) with no effect:
Code:
d-i base-installer/kernel/image string linux-server
d-i base-installer/kernel/override-image string linux-server
Once the machine is built, if I run:
[Code]...
Is there a way to select a second installed OS on a home server system without display and keyboard? I am putting together a home server (for mail, storage, media streaming) using an Atom-based Ubuntu Server 10.04 on a 4 GB intern flash drive and 2 hard drives for data storage, but no display or keyboard. I want to make periodic full backups of the system (flash) disk and use a second OS (installed on a partition on the hard drive) with a graphical interface (e.g. Xbuntu or PartImage) for maintenance purposes. I can connect remotely (from a Win7 or a Linux computer) to the X-display once the second system is running.
a) how can the second OS be booted on this server without keyboard? Is there a way to tell Grub2 to look at some hardware switch (or file) for the menu selection? The board has a serial and parallel port so I could wire up a switch to some pin of one of these. Also external USB connectors are available on front and back. Or can Grub2 read its default OS choise from some simple file, easily to change from a shell command of the eBox webbased system control internface?
b) I assume the second OS is needed to make a complete backup of the server OS on the flash disk. Can the backup be automated? (i.e. switch to second OS, backup, reboot first OS)
I was installing Ubuntu Server 10.04 last night, and the select software to install step failed. I tried to start over from scratch, but then the partitioner wouldn't load. Has anyone else seen this before?
View 2 Replies View RelatedI want to configure a remote internet facing server as git server. I would like to restrict access to the server to a few systems (access is restricted to select computers, not users). I first thought of using ssh key, but the key can be copied to another system hence that alone is not sufficient. I am having a dynamic IP, so simple IP based firewall blocking is also not possible. I was thinking about the possibility of using both SSH Key and IP based access. Is it possible to update the firewall rule whenever my ip gets changed?
View 6 Replies View RelatedIt is vital to get a useful server performance monitoring tool that prevents growth related performance issues. Moreover, it should offer long term capacity planning and trend analysis along with detecting performance issues and unwanted outages.
View 3 Replies View RelatedI installed a month or so ago a Samba File Server along with Active Directory integration in my company. I choose to install on my newly created raid array, all in ext3 filesystem. The purpose of this fileserver is to have lots of files from the different departments on the company (all windows workstations except mine). Everyone has a private folder and a department folder, along with the common folder for all employees.did I made a mistake formating all to ext3? would I get a significant increase in performance if I resize the current ubuntu partiton and created a new NTFS new one and move the files to it?
View 2 Replies View RelatedI am in the process of running a set of performance tests for the latest Sun JVM 1.6.0_20. I am using for that the dacapo test suite: [URL]
I ran the test suite very often with all sorts of settings, but recently it happened once that my Ubuntu system froze. I could still ping the machine, but nothing else was responding any more, no screen output, no ssh login, not possible to switch consoles. After rebooting the system the system logs were quiet. No single trace of any problem.
I am using a custom compiled kernel 2.6.34: Linux i7 2.6.34-custom-201005231602 #1 SMP PREEMPT Sun May 23 16:06:01 CEST 2010 x86_64 GNU/Linux and I am experimenting around with the -XX:+UseLargePages JVM switch the requires to set-up the hugetlbfs on the Linux system: [URL]
A similar issue happened in March 2010 on one of our CentOS 5.4 systems where we run a heavy load Java application on, where we had to hard power off the machine and after the reboot there was no trace of the problem in the logs. On that server we used JDK 1.6.0_17 and did not use hugetlbfs.
My first question would be what to do so that next time something like that happens I have more information available after the incident to debug and analyse the problem?
I run a dedicated specialty Quake 3 Arena Server.It currently runs a stock Debian 5.05. These are the hardware specifications.
256mb SD Ram
10gb Hard Drive
Intel Celeron
I think I should be getting more speed then I am.I would like to install Ubuntu Server.What version is the most stable, and will provide the best speed?I have to download my server files from the internet. Is this possible without the GUI?Is there anyway to control my server remotely, without any impact on performance, VNC is a huge impact.I want to run a mail server as well, is this possible with out a performance hit?
anyone of you could share if you have been using ubuntu for large scale website or critical mission project, say for 500.0000 secure transaction per 3 hours with 4 million users accessing server. how does ubuntu perform?
View 1 Replies View RelatedIt stores all my important stuff, as well as some music and movies.I use a second linux box in my living room to "stream" content via NFS or SAMBA share.The streaming tends to stop several times during playback, and needs to fill up its buffer again before continuing to play.I also have some Windows XP and 7 based computers that connect to this file server.I have noticed that directory listing is VERY slow, and there is a huge lag when I want to save/read a file from/to my home directory.
This is my setup:Ubuntu Server 10.10 64 bit (I have the same problem with 32bit ubuntu)
3 RAID5 arrays with 4 hard drives eachLVM on top of the 3 raid5 arrays.The Logical Volume i use is about 6.5TB, and I use the ReiserFS file systemThis LVM has grown over the years, and has had som replaced disks. So I have used the pvmove, and extend commands a bit.I have tried using IOTop and top to check if there is not enough resources available, but that doens't seem to be the problem.I haven't been able to find out why streaming over the network stops, but I know it is the server that causes the problem.Does ReiserFS have any performance problems with large logical volumes? Would changing to EXT4 or some other FS give any performance gain?
I just wanted to know if having my laptop set to ondemand, will this affect performance in any way? I realize it increases the clock speed to performance when the CPU is under load, but does the time it take to go from ondemand to performance affect speed? Will there be any noticeable difference between the two setups? I have a dual core intel at 2.2GHz when in performance. When ondemand is set with no load it downclocks to 800Mhz.
View 7 Replies View RelatedThe kvm and qemu packages are integrated into a single package, but this doesn't mean qemu is integrated into the kernel now in any way does it? I should still install kqemu to the the performance improvements, right?
View 8 Replies View RelatedOn F13 i386 inside Virtualbox. Host is a Win7 x64 box.
This may just be more idle curiosity than anything else since the server still works. . . but it's really bothering me because I can't explain it.
My (limited) understanding is that the devel files are just the source files and shouldn't actually affect peformance.
Yet, prior to installing httpd-devel (and its dependencies), /etc/init.d/httpd restart takes about 2 seconds total. After installing httpd-devel, the "stopping" phase of the httpd restart take 5-7 seconds (which seems really long when you're just sitting there waiting on it.
yum install httpd-devel also installs the following for dependencies:
db4-cxx
db4-devel
cyrus-sasl-devel
apr-devel
apr-util-devel
openldap-devel
expat-devel
All but one of those are devel files as well. And here's the real kicker: Uninstalling them through YUM doesn't put things back to normal (even after reboot).
I'm no linux expert. But I wouldn't think installing devel files would have this effect or any effect like this since they're just source code files (?). Can anyone explain what's happening or give me tips on how I can watch the apache process stop and see what's hanging it up?
I'm looking for a method to sync my calendars on my IMAP server with both my Thunderbird/Lightning any my Blackberry. I found "IMAP Calendar Proxy" here recently, but it has been inactive for 5 years. I've seen people suggesting the use of services like Plaxo and such, but I don't like the idea of a third party messing with my calendars and contacts. Also, I've had to remove several viruses from computers with Plaxo, and I'm not sure if it in itself is a virus or not..... It certainly is a thorn in my side as is. This is for my personal IMAP server, so I'd prefer a free solution even if it is more difficult to install than a paid version. I mainly need it to just sync my calendar to my Blackberry and Thunderbird and couldn't care less about the contacts.
I've been Googling for things for quite some time now, and haven't really found anything that says that it will work with Blackberry and Thunderbird. They really only give a sense of maybe with nothing really defined. I can put on an Ubuntu server to sync everything? I don't want to leave my computer on all the time, and RIM has yet to come out with something decent to sync Blackberries and Thunderbird properly as far as I know.
I am having trouble getting grub to automatically boot into ubuntu server. When I turn on my server the grub menu shows up and shows me the choices. They all work fine except that grub wont automatically select one. This wouldn't be too much of a problem but this is a headless server and I can't boot into ubuntu without a keyboard. I tried looking through the grub 2 documentation but nothing seemed to work when I edited the conf file.
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