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  • How is hashCode() calculated in Java.

    - by Jothi
    What value is hashCode() method is returning in java?. i read that it is an memory reference of an object. when i print hascode value for new Integer(1), its 1. for String(a) - 97. so i confused. is it ascii or what type of value is?

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  • Stream Music To Ventrilo From ESXi VM

    - by omghai2u
    I would like to stream music to my Ventrilo server from a Windows XP virtual machine running on an ESXi host. I have followed the instructions outlined here to stream music from something like VLC to the Ventrilo server on another machine and it works fine. I have also added the lines: sound.present = "TRUE" sound.virtualDev = "es1371" sound.fileName = "-1" sound.autodetect = "TRUE" to my .vmx file, as suggested here (http://communities.vmware.com/thread/191878), to get a sound card in my VM. The problem I am having is that it seems that my VM is not outputting any sound, so there's nothing to stream through Ventrilo. The Device Manager on the VM shows that this new sound card has drivers and doesn't appear to have any concerns with it. Can someone point me in the right direction to get my desired outcome? Thanks! PS. sorry for the long 2nd link, apparently I can only post 1 hyperlink with this low reputation.

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  • Setting up autotest with rspec in ubuntu

    - by Reactor5
    I'm trying to set up autotest on Ubuntu, and no matter what my configuration, I get this: loading autotest/rails_rspec2 style: RailsRspec2 /home/brian/.rvm/gems/ruby-1.9.2-rc2@rails3tutorial/gems/redgreen-1.2.2/lib/redgreen/autotest.rb:6:in `<top (required)>': uninitialized constant Object::PLATFORM (NameError) the .autotest (~/.autotest) file I have is as follows: #!/usr/bin/env ruby require 'redgreen/autotest' def self.notify title, msg, img, pri='low', time=3000 `notify-send -i #{img} -u #{pri} -t #{time} '#{msg}'` end Autotest.add_hook :ran_command do |at| results = [at.results].flatten.join("\n") output = results.slice(/(\d+)\s+examples?,\s*(\d+)\s+failures?(,\s*(\d+)\s+not implemented)?(,\s*(\d+)\s+pending)?/) folder = "~/Pictures/autotest/" if output =~ /([123456789]|[\d]{2,})\sfailures?/ notify "FAIL:", "#{output}", folder+"rails_fail.png", 'critical', 10000 elsif output =~ /[1-9]\d*\spending?/ notify "PENDING:", "#{output}", folder+"rails_pending.png", 'normal', 10000 else notify "PASS:", "#{output}", folder+"rails_ok.png" end end what am I doing wrong here?

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  • CCD vs. CMOS webcams

    - by rob
    Several years ago, I tried a CMOS-based webcam and it really sucked. It needed an extremely brightly-lit room to work. Around the same time, I also tried a CCD camera and it worked great. But since then, I've heard that CMOS technology has advanced considerably. Is it still the case that CCD webcams will give you a better picture, or can CMOS webcams also produce a picture of similar quality at moderate to low light levels? What type of camera is used in modern integrated webcams and cameras? If CMOS cameras actually are competitive these days, how do you tell if a webcam has a newer-generation CMOS sensor instead of one of the older sensors?

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  • How to convert eps file to a large jpeg image

    - by Anand
    Hello, I am using Linux. I want to convert an eps file to jpeg file. I find that I can use "convert" command. However, the resulting image looks very small. I want to enlarge the jpeg file by -resize option. It seems not to work. The resulting image is a pure black one. Do anyone has the same problem? Here are more details: 1: if I use convert -scale 1000x1000 your.eps your.jpg the resulting image looks like a low quality image. The eps vector image is not scaled properly. 2: if I use convert -geometry 300% your.eps your.jpg I get a pure black image. Here is my phf file: 2shared.com/document/RXl2Be-g/askquestions.html and my eps file: 2shared.com/file/qrmwKegj/askquestions.html Thank you very much for your help!

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  • How can you control the speed of fan that comes with the Antec Sonata III case from the outside?

    - by Emil Lerch
    The Antec Sonata III case comes with a nice 120mm fan that has a 3 speed switch. Most of the time the fan is fine on low, but for games or other taxing workloads I need to switch it to medium or high. Opening the case every time I want to change the setting is kind of a pain. Has anyone figured out a way to control the speed from the outside of the case without going nuclear (e.g. cutting holes in the case)? Other than this annoyance I like the case and the fan that comes with it.

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  • Rmagick on BitNami not working

    - by Steven
    I am running a rails app on BitNami rubystack, and try to upload picture using file_column i get this error, check below: LoadError (998: Invalid access to memory location. - C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/rmagick-2.9.0-x86-mswin32/ ext/RMagick2.so): C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/rmagick-2.9.0-x86-mswin32/ext/RMagick2.so C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in require' C:/Program Files (x86)/BitNami RubyStack/ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:innew_constants_in

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  • Peformance of f#

    - by Casebash
    What is the performance of f# like in terms of both memory and speed? I am particularly interested in your thoughts about what real world applications are viable. Benchmarks would be particularly relevant.

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  • An affordable way to use multiple Delayed::Job queues

    - by NudeCanalTroll
    I have a Ruby on Rails app that needs process many background jobs simultaneously: anywhere from 5-6 at a time to up to 50-60 at a time depending on the time of day. Right now my app is running on Heroku, which charges $.05/hour per worker, regardless of how much CPU or memory the worker is using. This is costing me a boatload each month... up to $1200/mo. Are there any hosts that will allow me to do what I'm doing for significantly cheaper?

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  • 1000 HZ linux kernel necessary if I have tickless and high resolution timer?

    - by Bob
    I am trying to improve performance on my server. I have a few processes that need low jitter (less than 10ms variance). I have a load average of 4 maximum on an i7-920 (4 physical cores, 8 with HT). There are about 10 processes ranging from 40% to 90% of a core user mode. System usage is 3% total. Total CPU usage is 80% max. Will setting the kernel from 100hz to 1000hz improve the jitter if tickless and high resolution timers are already set? This page seems to indicate it still does something. https://lkml.org/lkml/2009/4/28/401 How about changing from voluntary (PREEMPT_VOLUNTARY) to preemptible (PREEMPT)?

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  • Faster integer division when denominator is known?

    - by aaa
    hi I am working on GPU device which has very high division integer latency, several hundred cycles. I am looking to optimize divisions. All divisions by denominator which is in a set { 1,3,6,10 }, however numerator is a runtime positive value, roughly 32000 or less. due to memory constraints, lookup table is not option. Can you think of alternatives? I have thought of computing float point inverses, and using those to multiply numerator. Thanks

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  • Is there any IDE integration for JBoss AS 6?

    - by Jonathan Frank
    We have switched to JBoss 6 to make it possible to use a wider range of Java EE technologies. We chose JBoss because of its small memory footprint compared to other application servers, so we have no other choice. Do you know any developer tools that can be integrated with JBoss AS 6? Thanks in advance Jonathan Frank

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  • Caching in mmap

    - by myahya
    I am using mmap call to read from a very big file using simple pointer arithmetic in C++. The problem is that when I read small chunks of data (in the order of KBs) multiple times, each read take the same amount of time as the previous one. How can I know if the disk is being accessed to fulfill my request or whether the request is being fulfilled from main memory (page cache) in calls after the first one.

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  • Best free flowchart software?

    - by Click Upvote
    I need to map out a complex algorithm with lots of conditional options. Need an easy to use flowchart software, preferably free since I need it for just a one time use. Would prefer something lightweight which doesn't eat up all the CPU memory. Any ideas?

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  • NHibernate - Stream large result sets?

    - by Dan Black
    Hi, I have to read in a large record set, process it, then write it out to a flat file. The large result set comes from a Stored Proc in SQL 2000. I currently have: var results = session.CreateSQLQuery("exec usp_SalesExtract").List(); I would like to be able to read the result set row by row, to reduce the memory foot print Thanks

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  • SQLite connection pooling with Fluent NHibernate

    - by Groo
    Is there a way to setup SQLite connection pooling using Fluent NHibernate configuration? E.g. equivalent of DataSource=:memory: would be: var sessionFactory = Fluently .Configure() .Database(SQLiteConfiguration.Standard.InMemory) (etc.) Is there something eqivalent to "Pooling=True;Max Pool Size=1;"?

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  • I want to create adjacency matrix using python

    - by A A
    I have very large data set it is almost 450000 lines and two rows, i want to compute adjacency matrix using python, because previously i have tried to do it in matlab, and it shows memory error because of large data values. my data values also start from 100 and goes upto 450000, Anyone can help me in this issue, as i am new to python. I have to first import the file into python using excel sheet or notepad and then compute the adjacency matrix

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  • Run Windows batch file on schedule as non-Administrator user

    - by Evgeny
    I'm running Windows XP x64 SP2. I have a Windows batch file that with some Robocopy commands that I want to run on schedule. I created a scheduled task for it, running as a dedicated user (not the user I'm logged on as), but it simply did not run. I could see successful logon events in the security log, so it got that far, but the commands in the batch file definitely weren't getting executed. After reading through all of http://social.technet.microsoft.com/Forums/en-US/winservermanager/thread/d47d116e-10b9-44f0-9a30-7406c86c2fbe/ I tried making the target user account an Administrator and that fixed it - the batch file ran just fine. Nothing else seemed to work. The thing is, I want it to run under a low-privileged account. Does anyone know how can I get a batch file to run on schedule as a non-Administrator?

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  • Producer / Consumer - I/O Disk

    - by Pedro Magalhaes
    Hi, I have a compressed file in the disk, that a partitioned in blocks. I read a block from disk decompress it to memory and the read the data. It is possible to create a producer/consumer, one thread that recovers compacted blocks from disk and put in a queue and another thread that decompress and read the data? Will the performance be better? Thanks!

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  • Getting A File's Mime Type In Java

    - by Lee Theobald
    I was just wondering how most people fetch a mime type from a file in Java? So far I've tried two utils: JMimeMagic & Mime-Util. The first gave me memory exceptions, the second doesn't close its streams off properly. I was just wondering if anyone else had a method/library that they used and worked correctly?

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  • Are there any drawbacks to using helper :all in Rails

    - by Rob Jones
    In Rails 'helper :all' makes all your helpers 'available' to all your controllers. This is concise and convenient, but does it have any memory and/or performance implications compared to explicitly calling the helpers that each controller actually needs? It's unclear form the docs whether using it involves 'require'ing all those files, or whether autoload is being used. I can't tell from the source in the Rails framework docs. thanks

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  • AMD Phenom II X4 965 crossfire motherboard

    - by Nick
    I am trying to build a cheap mining rig. I wanted to use the AMD Phenom II X4 965 (HDZ965FBGMBOX) processor as it got very good reviews and benchmarks, and is inexpensive. However, I am having trouble finding motherboards with crossfire support for 2 GPUs. AMD's website only lists five compatible motherboards, of which only one has crossfire support. Worse, it is expensive and seems to be obsolete and no longer available. I have trouble believing that there are only five compatible motherboards for that CPU. Are there any low-end motherboards that are both compatible with the AMD Phenom II X4 965 and have CrossFire support? (Is there a way to find this sort of information, like a central site that lists motherboards and their technical specifications?)

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  • version control on large files

    - by Dustin Getz
    We happily use SVN for SCM at work. Currently I've got our binary assets in the same SVN repository as our code. SVN supports very large files (it transmits them 'streamily' to keep memory usage sane), but it is SLOOWWWWW. What asset management software do you recommend, for about a GB (and growing) worth of assets? We would prefer branching and merging (different assets & config files go to different customers).

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  • Best Practice for Utilities Class?

    - by Sonny Boy
    Hey all, We currently have a utilities class that handles a lot of string formatting, date displays, and similar functionality and it's a shared/static class. Is this the "correct" way of doing things or should we be instanciating the utility class as and when we need it? Our main goal here is to reduce memory footprint but performance of the application is also a consideration. Thanks, Matt PS. We're using .NET 2.0

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