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  • HW resources for the device driver [closed]

    - by VladimirLenin
    Need to provide memory and IRQ resources to the Linux kernel in order to bring up the CAN controller. Have no idea how to get them. Below is the structure I need to fill in. This structure I have taken for example, this is for the Run-Time Clock, but I need for CAN controller. Both are on the same board, and there are constants for RT Clock (and all other devices), but not for my CAN chip. When looking at the subject chip driver's code (sp_probe() function), I see it needs the same type resources. struct resource tegra_rtc_resources[] = { [0] = { .start = ???, .end = ???, .flags = IORESOURCE_MEM, }, [1] = { .start = ???, .end = ???, .flags = IORESOURCE_IRQ, }, };

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  • Can I copy large files faster without using the file cache?

    - by Veazer
    After adding the preload package, my applications seem to speed up but if I copy a large file, the file cache grows by more than double the size of the file. By transferring a single 3-4 GB virtualbox image or video file to an external drive, this huge cache seems to remove all the preloaded applications from memory, leading to increased load times and general performance drops. Is there a way to copy large, multi-gigabyte files without caching them (i.e. bypassing the file cache)? Or a way to whitelist or blacklist specific folders from being cached?

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  • Is it possible to make the desktop background transparent or otherwise hidden?

    - by EndangeredMassa
    I'm running Ubuntu in a virtual machine via VirtualBox. I have the seamless mode turned on, which is pretty cool. However, if I move an Ubuntu window around quickly, I can see the redraw of the ubuntu background quickly before it's hidden by VirtualBox again. This isn't a huge deal, but I'd like to fix it, if possible. I see two possible options that don't involve changing VirtualBox code: 1. Make the Ubuntu desktop transparent 2. Make the Ubuntu desktop hidden entirely Is it possible to do either? I know that Compiz Fusion has/had a feature to do this for their cube effects, but I don't think that I can run this on the VM. And, even if I could, I don't want to run those services for this one small feature.

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  • JavaScript malware analysis

    - by begueradj
    I want to test websites for JavaScript malware presence . I plan to develop a Python program that sends the URL of a given website to a virtual machine where the dynamic execution of the eventual malicious JavaScript embedded in the website's page is monitored. My questions: Should my VM be Windows or Linux ? What if the malware damages my VM: is there a hint how to avoid that ? Or launch a new VM automatically instead ? If I use telnet client library to communicate with the VM: must I implement a server within the VM to deal with my queries or can I overcome this ? I am jut looing for hints, general ideas. Thank you for any help.

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  • ubuntu freezes daily

    - by alme1304
    I have been using ubuntu daily for about 2 weeks now. I really like it but I have noticed that it freezes daily when I have things like chromium and firefox open or when I start watching videos. I realize these might be memory intensive apps/actions but I doubt that with my comps specs they would cause it to freeze. When I installed ubuntu, I remember that it warned me about installing it in a ext2 partition and not in a ext4 one. Could that be the issue? and is there a way to fix it without reinstalling? edit: specs are, 1.9gb ram & Intel® Core™2 CPU 6400 @ 2.13GHz × 2; ubuntu 12.04x64

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  • What is "Virtual Size" in sysinternals process explorer

    - by robert
    Hi My application runs for few hours, There is no increase in any value ( vmsize, memory) of Task Manager. But after few hours i get out of memory errors. In sysinternals i see that "Virtual Size" is contineously increasing, and when it reach around 2 GB i start getting memory errors. So what kind of memory leak is that ? How can i demonstrate it with a code ? Is it possible to reproduce same thing with any piece of code where none of the memory value increase but only the Virtual Size in sysinternsl process explorer increase ? thanks for any suggestions

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  • In database table design, how does "Virtual Goods" affect table design -- should we create an instan

    - by Jian Lin
    When we design a database table for a DVD rental company, we actually have a movie, which is an abstract idea, and a physical DVD, so for each rental, we have a many-to-many table with fields such as: TransactionID UserID DvdID RentedDate RentalDuration AmountPaid but what about with virtual goods? For example, if we let a user rent a movie online for 3 days, we don't actually have a DVD, so we may have a table: TransactionID UserID MovieID RentedDate RentalDuration AmountPaid should we create a record for each instance of "virtual good"? For example, what if this virtual good (the movie) can be authorized to be watched on 3 devices (with 3 device IDs), then should we then create a virtual good record in the VirtualGoods table, each with a VirtualGoodID and then another table that has VirtualGoodID DeviceID to match up the movie with the DeviceIDs? We can also just use the TransactionID as the VirtualGoodID. Are there circumstances where we may want to create a record to record this "virtual good" in a VirtualGoods table?

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  • Memory issue regarding UIImageView on IPhone 4.0 / IPad

    - by Sagar Mane
    Hello All, My Application is crashing due to low memory [ Received memory warning level 1 + 2] To trace this I have used Instrument and come with following points Test Enviorment : Single view controller added on Window When I don't use UIImageView Real Memory is used 3.66 MB When I uses UIImageView with Image having size 25 KB : Real Memory is used 4.24 MB. almost 560 KB extra when compare to w/o UIImageView and which keep on adding as I am adding more UIImageview on the view. below is sample code for adding UIImageview which I am refering UIImageView* iSplashImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Default-Landscape.png"]]; iSplashImage.frame = CGRectMake(0, 0, 320, 480); [self.window addSubview:iSplashImage]; AND dealloc if(iSplashImage) { [iSplashImage release]; iSplashImage = nil; } Issue is this 560 KB is not getting release and after some time application receives low memory warning. Can anyone point out if I am missing something or doing else. As My application uses lots of Images in One session. Thanks in Advance, Sagar

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  • Virtual network interface in Mac OS X

    - by Hans Doggen
    I know that you can make a virtual network interface in Windows (see here), and in Linux it is also pretty easy with ip-aliases, but does something similar exist for Mac OS X? I've been looking for loopback adapters, virtual interfaces and couldn't find a good solution. You can create a new interface in the networking panel, based on an existing interface, but it will not act as a real fully functional interface (if the original interface is inactive, then the derived one is also inactive). This scenario is needed when working in a completely disconnected situation. Even then, it makes sense to have networking capabilities when running servers in a VMWare installation. Those virtual machines can be reached by their IP address, but not by their DNS name, even if I run a DNS server in one of those virtual machines. By configuring an interface to use the virtual DNS server, I thought I could test some DNS scenario's. Unfortunately, no interface is resolving DNS names if none of them are inactive...

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  • App with MVC Virtual application shared AuthCookie.

    - by Razcer
    I have a 3.5 ASP.Net WebForm parent application. The parent uses forms authentication. I have a MVC child virtual application, I would like to make it so the user logs in to the parent application, user then navigates to the virtual application by pressing a link on the parent. However every time I do this it goes to the login screen for the virtual application. Is there a web setting I should double check in Parent? Or Child? Is there an IIS setting that I should check? Should I be using a virtual directory instead of virtual application? I want the child to be able to access the Session[] from the parent. I would like the child app to use the same authCookie as the parent app.

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  • JRuby 1.7.0 will not install bundler given plenty of memory

    - by user678615
    I installed jruby with rvm install jruby-1.7.0 and it ran out of memory when it tried to create the gemsets so I started by trying to install bundler with the new version and this is what I get ~>gem install bundler Error: Your application used more stack memory than the safety cap of 2048K. Specify -J-Xss####k to increase it (#### = cap size in KB). Specify -w for full StackOverflowError stack trace So I moved up the memory and I still got nothing with a huge chunk of memory ~>JRUBY_OPTS=-J-Xss1024m gem install bundler Error: Your application used more stack memory than the safety cap of 1024M. Specify -J-Xss####k to increase it (#### = cap size in KB). Specify -w for full StackOverflowError stack trace How the hell can that not be enough I run applications on less than that

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  • resizing arrays when close to memory capacity

    - by user548928
    So I am implementing my own hashtable in java, since the built in hashtable has ridiculous memory overhead per entry. I'm making an open-addressed table with a variant of quadratic hashing, which is backed internally by two arrays, one for keys and one for values. I don't have the ability to resize though. The obvious way to do it is to create larger arrays and then hash all of the (key, value) pairs into the new arrays from the old ones. This falls apart though when my old arrays take up over 50% of my current memory, since I can't fit both the old and new arrays in memory at the same time. Is there any way to resize my hashtable in this situation Edit: the info I got for current hashtable memory overheads is from here How much memory does a Hashtable use? Also, for my current application, my values are ints, so rather than store references to Integers, I have an array of ints as my values.

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  • Accessing apache on virtual pc

    - by Rick Hensly
    I am using a virtual pc to test my website. I can access all my webpages on the virtual pc. However, images don't load correctly. I can browse to my images folder and view all of them. However, if I click an image it will not load, and the apache log shows the virtual pc's ip trying to view the image: 192.168.0.55 - - [25/Jun/2009:20:10:41 -0400] "GET /images/pic.png HTTP/1.1" 302 220 Now, if I refresh the page it loads. 192.168.0.55 - - [25/Jun/2009:20:10:51 -0400] "GET /images/bg.png HTTP/1.1" 200 214 Also, images won't load in html or css. It seems like a redirecting problem or something, but I have no clue how to fix it. Thanks for any advice

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  • Check packet vlan tag using Tap virtual interface

    - by ankit
    Hi all, I am trying to learn how to implement virtual interfaces using the Tap driver. So far my understanding is that using the tap driver I can create a virtual interface and then have a userspace program attach to this interface to analyse the data coming into this device. Now what if I attach a cisco switch to my LAN interface using a TRUNK link, forward all the packets coming into the LAN interface to the virtual tap interface and then in my program attached to this interface do some coding to analyze the vlan tag in the packet and only allow certain vlans to be forwarded to the WAN interface ? Does this sound plausible or is there is flaw in my basic understanding ? Thanks for the help! ankit

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  • Centos Virtual host loading default page

    - by ntechi
    I have asked a question which was related to this but not same, I have a centos VPS, which has two wordpress websites, one is mbas.co.in and another is onlinemba123.com, now for virtual hosting using just ONE IP ADDRESS, first I started mbas.co.in, which is working fine, when I added onlinemba123.com then, it is loading default Centos page instead of my website, and I am just testing my onlinemba123 website, I haven't configured DNS for it, I am testing it through editing my PC's hosts file, My website folder names are also same as in the conf file below Now my question is how can I load my website instead of Default page, is my virtual host config fine? My virtual host config: NameVirtualHost *:80 <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html/www.mbas.co.in ServerName mbas.co.in ErrorLog logs/mbas.co.in-error_log CustomLog logs/mbas.co.in-access_log common </VirtualHost> <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html/www.onlinemba123.com ServerName www.onlinemba123.com ErrorLog logs/onlinemba123-error_log CustomLog logs/onlinemba123-access_log common </VirtualHost> My computers host file is: xx.xxx.xxx.xxx www.onlinemba123.com

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  • Disable ProxyPass rules within a virtual host on apache 2

    - by chinto
    I have a global proxypass rule in httpd.conf rules at global level ProxyPass /test/css http://myserver:7788/test/css ProxyPassReverse /test/css http://myserver:7788/test/css and I have a virtual host Listen localhost:7788 NameVirtualHost localhost:7788 <VirtualHost localhost:7788> Alias /test/css/ "C:/jboss/server/default/deploy/test.ear/test-web-app.war/css/" </VirtualHost> I would like to disable all global proxypass rules applying in this virtual host? NoProxy doesn't seem to work. (The reason I would like to do this is I have below global rules which create a 502 proxy loop if applied within this virtual host #pass all requests to application server ProxyPass /test http://localhost:8080/test ProxyPassReverse /test http://localhost:8080/test ) What I'm trying to do is, serve all static content (like css) using apache, while still proxying all the rest of requests to the application server.

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  • Fortigate - Accessing a Virtual Server address from several interfaces

    - by Jeremy G
    I am setting up a new application in its own DMZ on our Fortigate 300C firewalls. I have defined a load-balancing configuration for part of the application, and this works fine for traffic coming in from our internal network. However, I would also like this application to be reachable from other DMZs, for inter-application traffic, and from the SSL VPN interface. I can't seem to define the required policy, and it seems this is due to Virtual Servers being bound to the client interface on the Fortigate rather than the server interface (and so my virtual IP is not accessible from any of these other interfaces) Does anyone have an idea how I might go about this ? I guess I could create other virtual IPs for each interface, but this gets complicated to handle as clients need to change the address they use depending on how they are connecting. Thanks, Jeremy G

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  • Recovering Pictures & Movies from Formatted Memory Card

    - by Donotalo
    I thought I've copied all of the pictures and videos that I've taken using my digital camera Canon Digital IXUS 860 IS to my computer. Then I format the memory card. Then I found I didn't take all of the files! I don't have any other means of connecting the memory card to computer except via the camera. But the camera doesn't show it as a removable device directly in my computer so programs like Glary Utilities and PC Inspector didn't find the drive. I didn't take any picture after I formatted it. Is there any free software that can help me to get the pictures and videos? My memory card is an 4 GB SDHC card. Thanks.

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  • Cannot access virtual machine via ping from the physical host machine

    - by Kenni
    I'm installing a FreeBSD Server on VirtualBox. I set up the IP address (192.168.10.5) for the virtual server to run a mail server and the host computer(Windows 7) with 192.168.10.184. The two machines cannot communicate or connect to each other. I cannot ping from the virtual machine to the host and vice versa. The host machine connects to a LAN. I want the mail server to run frm a VMachine. I think it's a problem with the network configuration of the virtual machine.

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  • Slow performance by PHP directory operations on virtual machine (Ubuntu libvirt)

    - by thonixx
    Some days ago I installed an Ubuntu server and two running virtual machines with libvirt. Everything works fine except one performance problem. Everytime when I call a PHP script with directory operations the operations are very slow and not performant. Here is an example: http://zother.white-tiger.ch/ And here you see an example without a directory operation and how fast it is: http://michaeltanner.ch/ It's all on the same virtual server. The virtual machine uses 6 cores (8 are available) and 7500 megabytes RAM (8 Gigabyte are available). The disk image format is qcow2. How can I improve the performance?

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  • kvm memory changes via virsh not propagating to vm

    - by kevintmckay
    Hi I just started using kvm on rhel6 and after creating a vm I tried to increase the memory but the changes I amde in the xml file do not propogate to vm, even after bouncing vm and restarting libvert? [root@kvm01 qemu]# virsh dominfo dev-kvm01 Id: 2 Name: dev-kvm01 UUID: 9b2bf581-2807-3116-b176-60e9c0559943 OS Type: hvm State: running CPU(s): 2 CPU time: 1975.3s Max memory: 7864320 kB Used memory: 7864320 kB Persistent: yes Autostart: disable Security model: selinux Security DOI: 0 Security label: system_u:system_r:svirt_t:s0:c47,c760 (enforcing) [iknowmed@dev-kvm01 ~]$ free total used free shared buffers cached Mem: 3632284 3614508 17776 0 3980 3491676 -/+ buffers/cache: 118852 3513432 Swap: 5668856 0 5668856

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  • Logging Bounced messages to a Database (Postfix with virtual domains/users)

    - by Gurunandan
    We have a postfix installation with a couple of virtual domains each with virtual users. These domains and users are mapped using a mysql database. I have been until now tracking bounces by parsing the postfix log file. I suspect there must be better and more efficient ways of doing this. I thought of three but I am not sure what is best: Write a Postfix content filter that logs the bounce and throws away the mail Use procmail - but I am not sure how procmail would work with virtual users who have no $HOME defined Write a script that POPs mail from mailboxes; parses and logs them and deletes the bounced email I would appreciate advise on which would be best from a maintenance point of view and efficient from conserving server resources point of view. Thanks

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  • Disable ProxyPass rules within a virtual host on apache 2

    - by chinto
    I have a global proxypass rule in httpd.conf rules at global level ProxyPass /test/css http://myserver:7788/test/css ProxyPassReverse /test/css http://myserver:7788/test/css and I have a virtual host Listen localhost:7788 NameVirtualHost localhost:7788 <VirtualHost localhost:7788> Alias /test/css/ "C:/jboss/server/default/deploy/test.ear/test-web-app.war/css/" </VirtualHost> I would like to disable all global proxypass rules applying in this virtual host? NoProxy doesn't seem to work. (The reason I would like to do this is I have below global rules which create a 502 proxy loop if applied within this virtual host #pass all requests to application server ProxyPass /test http://localhost:8080/test ProxyPassReverse /test http://localhost:8080/test ) What I'm trying to do is, serve all static content (like css) using apache, while still proxying all the rest of requests to the application server.

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  • Terminal services and memory limits

    - by Mark Wassell
    Is there a way in Terminal Services to set limits on memory related parameters for a process. For example working set size and, possibly, if it makes sense, total virtual memory allocation for the session? To turn the question around, we have an application which cannot allocate as much virtual memory running on a terminal server as it can when running on a desktop PC (both I would expect to have a limit of 2GB for user mode address space) and I was wondering if there is another limit for processes or users on a terminal server. Perhaps even 2GB per user rather than per process.

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  • Bridge virtual machines out WLAN interface

    - by Thomas
    It seems that my wlan card (intel 5100 AGN) firmware doesn't allow "spoofing" MAC addresses. This has the side effect of destroying the capability to bridge out my virtual machines on that interface. Apparently this is a common thing on wlan cards. I can see the incoming traffic just fine in my virtual machines, but their DHCP queries don't get bridged out of the WLAN card. It works perfectly well when using the wired ethernet port. Is there a workaround for this? MAC-NAT or something? I don't want to route my virtual machines out to the Internet because I don't want my host OS to even have an IP address. I'm using Linux and KVM for virtualization.

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