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  • MDW Reports–New Source Code ZIP File Available

    - by billramo
    In my MDW Reports series, I attached V1 of the RDL files in my post - May the source be with you! MDW Report Series Part 6–The Final Edition. Since that post, Rachna Agarwal from MSIT in India updated the RDL files that are ready to go in a single ZIP. The reports assume that they will ne uploaded to the Report Manager’s root folder and use a shared data source named MDW. The reports also integrate with the new Query Hash Statistics reports. You can download them from my SQLBlog.com download site.

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  • Reccomendation for tuning 100's of Sql Databases

    - by wayne
    Hi, I'm running several sql servers, each running a few hundred multi gig databases for customers. They are all setup homogeneously as far as the schemas are concerned, however customer usages of the data differ quite alot from database to database. What would be the best way to auto-index / profile / tune this large amount of databases? As there are atleast 600 or more catalogs i cant have someone manually profile, and index as required by each databases usage patterns. I'm currently running SQL 2005 but will be moving to 2008, so solutions that work with either are fine!

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  • How to write PowerShell code part 2 (Using function)

    - by ybbest
    In the last post, I have showed you how to use external configuration file in your PowerShell script. In this post, I will show you how to create PowerShell function and call external PowerShell script.You can download the script here. 1. In the original script, I create the site directly using New-SPSite command. I will refactor it so that I will create a new function to create the site using New-SPSite. The PowerShell function is quite similar to a C# method. You put your function parameters in () and separate each parameter by a comma (,). Then you put your method body in {}. function add ([int] $num1 , [int] $num2){ $total=$num1+$num2 #Return $total $total } 2. The difference is you do not need semi-colon (;) at the end of each statement and when calling the method you do not need comma (,) to separate each parameter. function add ([int] $num1 , [int] $num2){ $total=$num1+$num2 #Return $total $total } #Calling the function [int] $num1=3 [int] $num2=4 $d= add $num1 $num2 Write-Host $d 3. If you like to return anything from the function, you just need to type in the object you like to return, not need to type return .e.g. $ObjectToReturn not return $ObjectToReturn

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  • Oracle Hangs on Responses Intermittently

    - by Ryan Cook
    I want to preface this with the fact that I am a developer and I am not even close to a DBA, plus I am new to Oracle. OK, here it goes: I have a Java application which uses spring and hibernate. Its a simple CRUD app and I will leave the details out as I don't think they are the issue. I have noticed that my app runs fine when I use MySql, but when I use an Oracle 10.2 server every 7th-10th hangs for 5-10 seconds. My Oracle installation was done by me using all defaults, same as the mysql install. I don't even know where to start looking. Any ideas? Thanks in advance and sorry that I lack the details that are most likely required for help.

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  • how to fetch the website code in my local machine

    - by vipin8169
    i have a local GIT repository in my system by name 'git_repo' under which i had the whole codebase for a website(pre-configured by someone else), including all the jsps, js, css etc. I used the following commands to create the local git repository out of the main repository: git branch //to show the current branch git checkout -b branch_local_name origin/Main_branch_name //to create local repository in current branch git fetch //to fetch the current build Accidently, i deleted all the contents of the local folder and i don't know what to do fetch the contents of that website again. Please help !!!

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  • Is it OK to use dynamic typing to reduce the amount of variables in scope?

    - by missingno
    Often, when I am initializing something I have to use a temporary variable, for example: file_str = "path/to/file" file_file = open(file) or regexp_parts = ['foo', 'bar'] regexp = new RegExp( regexp_parts.join('|') ) However, I like to reduce the scope my variables to the smallest scope possible so there is less places where they can be (mis-)used. For example, I try to use for(var i ...) in C++ so the loop variable is confined to the loop body. In these initialization cases, if I am using a dynamic language, I am then often tempted to reuse the same variable in order to prevent the initial (and now useless) value from being used latter in the function. file = "path/to/file" file = open(file) regexp = ['...', '...'] regexp = new RegExp( regexp.join('|') ) The idea is that by reducing the number of variables in scope I reduce the chances to misuse them. However this sometimes makes the variable names look a little weird, as in the first example, where "file" refers to a "filename". I think perhaps this would be a non issue if I could use non-nested scopes begin scope1 filename = ... begin scope2 file = open(filename) end scope1 //use file here //can't use filename on accident end scope2 but I can't think of any programming language that supports this. What rules of thumb should I use in this situation? When is it best to reuse the variable? When is it best to create an extra variable? What other ways do we solve this scope problem?

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  • Why can't get more speed on iperf on windows xp

    - by SledgehammerPL
    I test my bandwith and throughput using iperf (jperf) on desktop PC with WinXP. I can't get more than 3Mbit/s outside until I change TCP Window size - about 84Kb is ok. but I can't force XP to use this value by default.. I try very many magic spells on Registry, use many TCP Optimisers - but nothing works. I will accept that that everything is ok, when I reboot the PC, run iperf and will see 18.1Mbit - like my Linux box standing very near my Windows XP Box. Is it possible?

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  • Getting solutions off the internet. Bad or Good? [closed]

    - by Prometheus87
    I was looking on the internet for common interview questions. I came upon one that was about finding the occurrences of certain characters in an array. The solution written right below it was in my opinion very elegant. But then another thought came to my mind that, this solution is way better than what came to my mind. So even though I know the solution (that most probably someone with a better IQ had provided) my IQ was still the same. So that means that even though i may know the answer, it still wasn't mine. hence if that question was asked and i was hired upon my answer to that question i couldn't reproduce that same elegance in my other ventures within the organization My question is what do you guys think about such "borrowed intelligence"? Is it good? Do you feel that if solutions are found off the internet, it makes you think in that same more elegant way?

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  • Can I change a MySQL table back and forth between InnoDB and MyISAM without any problems?

    - by Daniel Magliola
    I have a site with a decently big database, 3Gb in size, a couple of tables with a dozen million records. It's currently 100% on MyISAM, and I have the feeling that the server is going slower than it should because of too much locking, so I'd like to try going to InnoDB and see if that makes things better. However, I need to do that directly in production, because obviously without load this doesn't make any difference. However, I'm a bit worried about this, because InnoDB actually has potential to be slower, so the question is: If I convert all tables to InnoDB and it turns out i'm worse off than before, can I go back to MyISAM without losing anything? Can you think of any problems I might encounter? (For example, I know that InnoDB stores all data in ONE big file that only gets bigger, can this be a problem?) Thank you very much Daniel

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  • Code Smell: Inheritance Abuse

    - by dsimcha
    It's been generally accepted in the OO community that one should "favor composition over inheritance". On the other hand, inheritance does provide both polymorphism and a straightforward, terse way of delegating everything to a base class unless explicitly overridden and is therefore extremely convenient and useful. Delegation can often (though not always) be verbose and brittle. The most obvious and IMHO surest sign of inheritance abuse is violation of the Liskov Substitution Principle. What are some other signs that inheritance is The Wrong Tool for the Job even if it seems convenient?

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  • How to set the request start time with HAProxy?

    - by Tupy
    I would like to measure the time of full request stack. The New Relic capture time of the middleware (e.g. java, python, ruby) and request time (See https://newrelic.com/docs/features/tracking-front-end-time). For this, I need to configure the X-Request-Start header as the request pass through the HAProxy load balance. The haproxy.cfg should look like: backend www balance roundrobin mode http reqadd "X-Request-Start" UNKNOWN_TIME_FUNCTION() server servername 192.168.0.1:80 weight 1 check There is a haproxy native function to replace the UNKNOWN_TIME_FUNCTION()?

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  • Simple queries occasionally running very slowly

    - by Johan
    I have some very simple queries that occasionally run very slowly. The table viewed_sites has about 10 - 20 rows. Running EXPLAIN ANALYZE always gives a runtime of less than 3 milliseconds. When the query is run automatically (every 10 seconds) it occasionally takes over a second to run. The query: INSERT INTO ga.viewed_sites (site_id) VALUES ('gop2') The table: CREATE TABLE viewed_sites ( site_id character varying(4) NOT NULL, last_viewed timestamp with time zone DEFAULT now() NOT NULL ); The (occasional) log result: 2010-05-24 15:47:55 UTC LOG: duration: 1044.632 ms statement: INSERT INTO ga.viewed_sites (site_id) VALUES ('gop2') It's a horribly vague question, but what could be causing this? I suppose it comes down to CPU, RAM, HDD or some combination of the above. Postgresql 8.3, Ubuntu 8.04 Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz 2 GiB RAM

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  • Speeding up ROW_NUMBER in SQL Server

    - by BlueRaja
    We have a number of machines which record data into a database at sporadic intervals. For each record, I'd like to obtain the time period between this recording and the previous recording. I can do this using ROW_NUMBER as follows: WITH TempTable AS ( SELECT *, ROW_NUMBER() OVER (PARTITION BY Machine_ID ORDER BY Date_Time) AS Ordering FROM dbo.DataTable ) SELECT [Current].*, Previous.Date_Time AS PreviousDateTime FROM TempTable AS [Current] INNER JOIN TempTable AS Previous ON [Current].Machine_ID = Previous.Machine_ID AND Previous.Ordering = [Current].Ordering + 1 The problem is, it goes really slow (several minutes on a table with about 10k entries) - I tried creating separate indicies on Machine_ID and Date_Time, and a single joined-index, but nothing helps. Is there anyway to rewrite this query to go faster?

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  • Tips/tricks to manage a new team with new code

    - by Fanatic23
    How do you handle yourself in a new team where you are the senior most developer and most others in the team are junior to you by several years. The task ahead of the team is something nobody else including you has accomplished in their career before. Management insists on higher productivity of the whole team, and as senior developer you are responsible. Any tips for coming out trumps in a situation like this? Clearly, the entire team needs time to learn and let's not forget the team's new. However, deadlines are up ahead as well...

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  • Large keepalive_requests values are severely slowing-down Nginx

    - by Gil
    When running a bacon (43-byte transparent pixel) load test on Nginx, we have tried several keepalive_requests values (from 10 to 100,000) and the optimal value seems to be 10. Here are the server HTTP headers of this tiny reply: HTTP/1.1 200 OK Server: nginx/1.5.6 Date: Wed, 23 Oct 2013 12:39:45 GMT Content-Type: image/gif Content-Length: 43 Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT Connection: keep-alive Nginx is twice slower with keepalive_requests 100000 than with keepalive_requests 10. Can you help understanding that result? Or tell what we do wrong? For reference, here is the nginx.conf file.

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  • Free memory on linux [closed]

    - by Julia Roberts
    Possible Duplicate: Meaning of the buffers/cache line in the output of free What would be a good setting to free memory on linux? I have 8GB but gets used up so fast. current settings: kernel.sched_min_granularity_ns = 10000000 kernel.sched_wakeup_granularity_ns = 15000000 vm.dirty_ratio = 40 kernel.pid_max = 4096 vm.bdflush = 100 1200 128 512 15 5000 500 1884 2 What settings would I need so linux frees old ram faster?

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  • setup lowcost image storage server with 24x SSD array to get high IOPS?

    - by Nenad
    I want to build let's name it a lowcost Ra*san which would host for our social site the images (many millions) we have 5 sizes of every photo with 3 KB, 7 KB, 15 KB, 25 KB and 80 KB per Image. My idea is to build a Server with 24x consumer 240 GB SSD's in Raid 6 which will give me some 5 TB Disk space for the photo storage. To have HA I can add a 2nd one and use drdb. I'm looking to get above 150'000 IOPS (4K Random reads). As we mostly have read access only and rarely delete photos i think to go with consumer MLC SSD. I read many endurance reviews and don't see there a problem as long we don't rewrite the cells. What you think about my idea? - I'm not sure between Raid 6 or Raid 10 (more IOPS, cost SSD). - Is ext4 OK for the filesystem - Would you use 1 or 2 Raid controller, with Extender Backplane If anyone has realized something similar i would be happy to get Real World numbers. UPDATE I have buy 12 (plus some spare) OCZ Talos 480GB SAS SSD Drive's they will be placed in a 12-bay DAS and attached to a PERC H800 (1GB NV Cache, manufactured by LSI with fastpath) Controller, I plan to setup Raid 50 with ext4. If someone is wondering about some benchmarks let me know what you would like to see.

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  • First requests are painfully slow

    - by winSharp93
    I am running Redmine under IIS using Zoo. Installation was done using the Web Platform Installer and the default configuration has not been touched. However, when using the application, the first requests take very long to complete (sometimes more than one minute). During that time, the ruby.exe causes some CPU load (about 15%). According to the log files, it's mainly the views taking that long to render: Started GET "/redmine/login" for IP at 2012-09-04 09:54:08 +0200 Processing by AccountController#login as HTML Rendered account/login.html.erb within layouts/base (42150.5ms) Completed 200 OK in 43508ms (Views: 43008.5ms | ActiveRecord: 0.0ms) Rendered account/login.html.erb within layouts/base (42435.1ms) Completed 200 OK in 44100ms (Views: 43523.3ms | ActiveRecord: 0.0ms) After the initial delay, further request times are totally acceptable. Any ideas on how to speed up the warmup time?

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  • Spiceworks SQL Monitor cant authenticate

    - by user11457
    I have SpiceWorks 4.7, installed and added the sql monitor extension to monitor our SQL servers. It does identify our sql servers correctly, but when I put the login information in it can't authenticate, with the following error message. Authentication failed. Check the login and password, and ensure that the server is configured for remote connections. I get the same result trying to use windows authentication. WE do use an alternate port# could this be the problem?

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  • What Is The Proper Laptop Battery Care While Running Laptop Solely On Battery?

    - by Boris_yo
    Because of convenience, I had to move my laptop to another room away from room where I always ran laptop on UPS without using battery. Since so far I always run laptop on battery, I question the proper usage to prolong battery life. Currently I run laptop on battery with power supply so battery is constantly being charged until it is full 100% and when it is, I disconnect power supply and continue working until battery meter shows 10% remaining. That's when I plug in power supply and let it charge until 100% once again while I work. But it takes a lot of time to fully charge laptop while working since my power supply is 60W which should be the reason of such slow charge and I think the kind of charger that I use is express charger. The thought of charging laptop until full, all while doing my work makes me think that if it takes way more time to charge, it might keep battery running warm for the period of charging time which brings me to question about whether I should keep running laptop as I've described above or it would be better to leave power supply constantly connected to laptop to keep battery between 99%-100%? On one hand it won't keep battery warm but it will try to frequently supply charge to battery once it gets 99% to replenish charge to 100% (which might reduce battery life?). On the other hand if I'll keep working solely on battery and recharge it when below 10%, the battery will get warm but only when charged. Can anybody suggest the correct way of running laptop on battery to ensure better battery life? Dell Latitude E6420 Windows 7 64-bit

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  • How to write PowerShell code part 3 (calling external script)

    - by ybbest
    In this post, I’d like to show you how to calling external script from a PowerShell script. I’d like to use the site creation script as an example. You can download script here. 1. To call the external script, you need to first to grab the script path. You can do so by calling $scriptPath = Split-Path $myInvocation.MyCommand.Path to grab the current script path. You can then use this to build the path for your external script path. $scriptPath = Split-Path $myInvocation.MyCommand.Path $ExternalScript=$scriptPath+"\CreateSiteCollection.ps1" $configurationXmlPath=$scriptPath+"\SiteCollection.xml" [xml] $configurationXml=Get-Content $configurationXmlPath & "$ExternalScript" $configurationXml Write-Host 2.If you like to pass in any parameters , you need to define your script parameters in param () at the top of the script and separate each parameter by a comma (,) and when calling the method you do not need comma (,) to separate each parameter. #Pass in the Parameters. param ([xml] $xmlinput)

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  • How to write PowerShell code part 2 (Using function)

    - by ybbest
    In the last post, I have showed you how to use external configuration file in your PowerShell script. In this post, I will show you how to create PowerShell function and call external PowerShell script.You can download the script here. 1. In the original script, I create the site directly using New-SPSite command. I will refactor it so that I will create a new function to create the site using New-SPSite. The PowerShell function is quite similar to a C# method. You put your function parameters in () and separate each parameter by a comma (,). Then you put your method body in {}. function add ([int] $num1 , [int] $num2){ $total=$num1+$num2 #Return $total $total } 2. The difference is you do not need semi-colon (;) at the end of each statement and when calling the method you do not need comma (,) to separate each parameter. function add ([int] $num1 , [int] $num2){ $total=$num1+$num2 #Return $total $total } #Calling the function [int] $num1=3 [int] $num2=4 $d= add $num1 $num2 Write-Host $d 3. If you like to return anything from the function, you just need to type in the object you like to return, not need to type return .e.g. $ObjectToReturn not return $ObjectToReturn

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  • NFS I/O monitoring

    - by Gordon
    I have a NFS mounted directory, and I'd like to monitor the I/O usage on it (MB/s reads and writes). What's the recommended way to do that ? This is the NFS client, I don't have access to the NFS server. I'm not interested in general I/O usage (otherwise I would use vmstat/iostat). It also has multiple NFS mounts, I'm interested in monitoring just one specific mount (or I might have used ethereal). Thanks!

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