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  • can unbuntu 13.03 be loaded with flash drive? USB

    - by Steve Shaw
    I am wanting to do a split pc, half win xp, half unbuntu 13.04, want to use the linux for internet surfing, youtube, crackle, hulu videos viewing. My pc is a older DELL C521, 1.87ghz, 1.5 gb ram, 32bit, 80gb hd...will this be better than present slow slow slow win xp? need it for internet mostly. Would consider dumping win xp later on if I get the hang of the linux distro...any help appreciated. thanks

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  • How do I get a Realtek Wireless USB Airlink101 AWLL5088 working?

    - by Tobias_Mann
    I am running Ubuntu 11.10, 32bit. I ordered them a Realtek Airlink101 AWLL5088 based upon the relative ease for linux installation. I am having trouble installing the drivers. I copied the drivers to /usr/src/ and ran sudo ./install.sh from that director listed above. I have tried ndiswrapper, and allowing the default drivers, but with no luck. It seems to continue to try and use the default free drivers, even though I have blacklisted them using the guide described here. There was no error, I was asked which card I was using. I looked at the packaging and at the support page, and guessed number 2, allowed to finish, and rebooted. It continued detect the wireless network after the reboot, but would never complete the connection. I would appreciate any feedback. I am kind of stuck trying to figure this out.

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  • After writing SQL statements in MySQL, how to measure the speed / performance of them?

    - by Jian Lin
    I saw something from an "execution plan" article: 10 rows fetched in 0.0003s (0.7344s) How come there are 2 durations shown? What if I don't have large data set yet. For example, if I have only 20, 50, or even just 100 records, I can't really measure how faster 2 different SQL statements compare in term of speed in real life situation? In other words, there needs to be at least hundreds of thousands of records, or even a million records to accurately compares the performance of 2 different SQL statements?

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  • Is it worth purchasing Mahout in Action to get up to speed with Mahout, or are there other better sources?

    - by gab
    I'm currently a very casual user of Apache Mahout, and I'm considering purchasing the book Mahout in Action. Unfortunately, I'm having a really hard time getting an idea of how worth it this book is -- and seeing as it's a Manning Early Access Program book (and therefore only currently available as a beta-version e-book), I can't take a look myself in a bookstore. Can anyone recommend this as a good (or less good) guide to getting up to speed with Mahout, and/or other sources that can supplement the Mahout website?

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  • How can I replace/speed up a text search query which uses LIKE ?

    - by Jules
    I'm trying to speed up my query... select PadID from Pads WHERE (keywords like '%$search%' or ProgramName like '%$search%' or English45 like '%$search%') AND RemovemeDate = '2001-01-01 00:00:00' ORDER BY VersionAddDate DESC I've done some work already, I have a keywords table so I can add ... PadID IN (SELECT PadID FROM Keywords WHERE word = '$search') ... However its going to be a nightmare to split up the words from English45 and ProgramName into a word table. Any ideas ? EDIT : (also provided actual table names)

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  • CSS selectors : should I minimise my use of the class attribute in the HTML or optimise the speed

    - by Laurent Bourgault-Roy
    As I was working on a small website, I decided to use the PageSpeed extension to check if their was some improvement I could do to make the site load faster. However I was quite surprise when it told me that my use of CSS selector was "inefficient". I was always told that you should keep the usage of the class attribute in the HTML to a minimum, but if I understand correctly what PageSpeed tell me, it's much more efficient for the browser to match directly against a class name. It make sense to me, but it also mean that I need to put more CSS classes in my HTML. It also make my .css file a little harder to read. I usually tend to mark my CSS like this : #mainContent p.productDescription em.priceTag { ... } Which make it easy to read : I know this will affect the main content and that it affect something in a paragraph tag (so I wont start to put all sort of layout code in it) that describe a product and its something that need emphasis. However it seem I should rewrite it as .priceTag { ... } Which remove all context information about the style. And if I want to use differently formatted price tag (for example, one in a list on the sidebar and one in a paragraph), I need to use something like that .paragraphPriceTag { ... } .listPriceTag { ... } Which really annoy me since I seem to duplicate the semantic of the HTML in my classes. And that mean I can't put common style in an unqualified .priceTag { ... } and thus I need to replicate the style in both CSS rule, making it harder to make change. (Altough for that I could use multiple class selector, but IE6 dont support them) I believe making code harder to read for the sake of speed has never been really considered a very good practice . Except where it is critical, of course. This is why people use PHP/Ruby/C# etc. instead of C/assembly to code their site. It's easier to write and debug. So I was wondering if I should stick with few CSS classes and complex selector or if I should go the optimisation route and remove my fancy CSS selectors for the sake of speed? Does PageSpeed make over the top recommandation? On most modern computer, will it even make a difference?

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  • How can I speed up my Perl regex matching?

    - by est
    I want to capture several text using the following regex: $text_normal = qr{^(\/F\d+) FF (.*?) SCF SF (.*?) MV (\(.*?)SH$}; A sample of the string is like below: my $text = '/F12345 FF FF this is SCF SF really MV (important stuff SH'; Can that be rewritten to speed up the matching?

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  • How can I measure the speed of code written in Java? (AI algorithms)

    - by Registered User
    Hi All, How can I measure the speed of code written in Java? I planning to develop software which will solve Sudoku using all presently available AI and ML algorithms and compare time against simple brute-force method. I need to measure time of each algorithm, I would like to ask for suggestions on what is the best way of doing that? Very important, program must be useful on any machine regardless to CPU power/memory. Thank you.

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  • How to set a global CURL rate(speed) limit?

    - by Mint
    I had a look around for the CURL settings file but didn't find it in /etc/ and didn't find much on the curl site ether... So basically what I want to do set a maximum speed limit that curl can upload at (no matter how many instances of it are running) so that my server has some upload capacity left for other tasks.

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  • Macro keeps crashing need to speed it up or rewrite it, excel vba 50,000 lines of data

    - by Joel
    Trying to speed up a macro that runs over 50,000 lines ! I have two ways of performing the same vba macro Sub deleteCommonValue() Dim aRow, bRow As Long Dim colB_MoreFirst, colB_LessFirst, colB_Second, colC_MoreFirst, colC_LessFirst, colC_Second As Integer Dim colD_First, colD_Second As Integer Application.ScreenUpdating = False Application.DisplayStatusBar = False Application.Calculation = xlCalculationManual Application.EnableEvents = False aRow = 2 bRow = 3 colB_MoreFirst = Range("B" & aRow).Value + 0.05 colB_LessFirst = Range("B" & aRow).Value - 0.05 colB_Second = Range("B" & bRow).Value colC_MoreFirst = Range("C" & aRow).Value + 0.05 colC_LessFirst = Range("C" & aRow).Value - 0.05 colC_Second = Range("C" & bRow).Value colD_First = Range("D" & aRow).Value colD_Second = Range("D" & bRow).Value Do If colB_Second <= colB_MoreFirst And colB_Second >= colB_LessFirst Then If colC_Second <= colC_MoreFirst And colC_Second >= colC_LessFirst Then If colD_Second = colD_First Or colD_Second > colD_First Then Range(bRow & ":" & bRow).Delete 'bRow delete, assign new value to bRow colB_Second = Range("B" & bRow).Value colC_Second = Range("C" & bRow).Value colD_Second = Range("D" & bRow).Value '----------------------------------------------------- Else Range(aRow & ":" & aRow).Delete bRow = aRow + 1 'aRow value deleted, assign new value to aRow and bRow colB_MoreFirst = Range("B" & aRow).Value + 0.05 colB_LessFirst = Range("B" & aRow).Value - 0.05 colB_Second = Range("B" & bRow).Value colC_MoreFirst = Range("C" & aRow).Value + 0.05 colC_LessFirst = Range("C" & aRow).Value - 0.05 colC_Second = Range("C" & bRow).Value colD_First = Range("D" & aRow).Value colD_Second = Range("D" & bRow).Value '----------------------------------------------------- End If Else bRow = bRow + 1 'Assign new value to bRow colB_Second = Range("B" & bRow).Value colC_Second = Range("C" & bRow).Value colD_Second = Range("D" & bRow).Value '----------------------------------------------------- End If Else bRow = bRow + 1 'Assign new value to bRow colB_Second = Range("B" & bRow).Value colC_Second = Range("C" & bRow).Value colD_Second = Range("D" & bRow).Value '----------------------------------------------------- End If If IsEmpty(Range("D" & bRow).Value) = True Then aRow = aRow + 1 bRow = aRow + 1 'finish compare aRow, assign new value to aRow and bRow colB_MoreFirst = Range("B" & aRow).Value + 0.05 colB_LessFirst = Range("B" & aRow).Value - 0.05 colB_Second = Range("B" & bRow).Value colC_MoreFirst = Range("C" & aRow).Value + 0.05 colC_LessFirst = Range("C" & aRow).Value - 0.05 colC_Second = Range("C" & bRow).Value colD_First = Range("D" & aRow).Value colD_Second = Range("D" & bRow).Value '----------------------------------------------------- End If Loop Until IsEmpty(Range("D" & aRow).Value) = True Application.ScreenUpdating = False Application.DisplayStatusBar = False Application.Calculation = xlCalculationAutomatic Application.EnableEvents = False End Sub or Sub deleteCommonValue() Dim aRow, bRow As Long Application.ScreenUpdating = False aRow = 2 bRow = 3 Do If Range("B" & bRow).Value <= (Range("B" & aRow).Value + 0.05) _ And Range("B" & bRow).Value >= (Range("B" & aRow).Value - 0.05) Then If Range("C" & bRow).Value <= (Range("C" & aRow).Value + 0.05) _ And Range("C" & bRow).Value >= (Range("C" & aRow).Value - 0.05) Then If Range("D" & bRow).Value = (Range("D" & aRow).Value) _ Or Range("D" & bRow).Value > (Range("D" & aRow).Value) Then Range(bRow & ":" & bRow).Delete Else Range(aRow & ":" & aRow).Delete bRow = aRow + 1 Range("A" & aRow).Select End If Else bRow = bRow + 1 Range("A" & bRow).Select End If Else bRow = bRow + 1 Range("A" & bRow).Select End If If IsEmpty(Range("D" & bRow).Value) = True Then aRow = aRow + 1 bRow = aRow + 1 End If Loop Until IsEmpty(Range("D" & aRow).Value) = True End Sub I dont know if my best option will be to split the rows into multiple sheets?

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  • Raspberry Pi how to format HDD

    - by Speed
    Hi I am very new to Raspberry Pi environment, so looking for a bit of help to format a usb hard disk drive. I ran lsblk and got sda 8:0 0 37.3G 0 disk sda1 8:1 0 37.3G 0 part looking on web, if tried the following "sudo mkfs.ext4 /dev/sda1 -L USB40gb" it did something but when I tried to mount the drive again, it still showed the files that were there before and I can not create new file/folder "Error creating directory: Permission denied" I am writing this from my windows 8.1 pc so can not cut and paste from the pi. trying to format its output is a bit hard. Oh, there is Nothing written after the word "part" above. There use to be /media/USB40gb so I have done something because this has disappeared. I am using PCManFM 0.9.10 It does not have a format option, which would make life a lot easier, but then its not windows. I think I am running the basic linux os for the pi. It boots to a graphic environment, but I do not know how to advise what it is. I think its OpenBox 2.0.4 Thanks in advance Speed PS: I reran the format string above but this time I changed the label to read USB37gb. I did this to confirm that I was in fact formatting the right drive. Low and behold, it actually formatted the drive, wiping everything from it. Great ... testing it by creating a new folder on the drive and get error msg Permission Denied! So I have fixed the formatting issue by trial and error but still can't use the drive... Suggestions anyone?

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