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• Internet speed showing high value but never felt that speed [closed]

  - by Kiran D Pillai

  I use Reliance Netconnect+ in my Toshiba Satellite laptop. My OS is Windows 7 Ultimate. I've seen speeds up to 1500 kbps when travelling and have an average speed of 400 kbps at my room premises. I'm sorry, I've never felt that much speed while browsing or downloading. Sometimes I think some other programs are also sharing the same network. It is just showing 200 or 500 kbps but I feel 25 or 50 kbps. Is there any way to prevent them? I use Google Chrome downloaded from Google site. Please suggest me some solutions.

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• Tomcat JNDI Connection Pool docs - Random Connection Closed Exceptions

  - by Andy Faibishenko

  I found this in the Tomcat documentation here What I don't understand is why they close all the JDBC objects twice - once in the try{} block and once in the finally{} block. Why not just close them once in the finally{} clause? This is the relevant docs: Random Connection Closed Exceptions These can occur when one request gets a db connection from the connection pool and closes it twice. When using a connection pool, closing the connection just returns it to the pool for reuse by another request, it doesn't close the connection. And Tomcat uses multiple threads to handle concurrent requests. Here is an example of the sequence of events which could cause this error in Tomcat: Request 1 running in Thread 1 gets a db connection. Request 1 closes the db connection. The JVM switches the running thread to Thread 2 Request 2 running in Thread 2 gets a db connection (the same db connection just closed by Request 1). The JVM switches the running thread back to Thread 1 Request 1 closes the db connection a second time in a finally block. The JVM switches the running thread back to Thread 2 Request 2 Thread 2 tries to use the db connection but fails because Request 1 closed it. Here is an example of properly written code to use a db connection obtained from a connection pool: Connection conn = null; Statement stmt = null; // Or PreparedStatement if needed ResultSet rs = null; try { conn = ... get connection from connection pool ... stmt = conn.createStatement("select ..."); rs = stmt.executeQuery(); ... iterate through the result set ... rs.close(); rs = null; stmt.close(); stmt = null; conn.close(); // Return to connection pool conn = null; // Make sure we don't close it twice } catch (SQLException e) { ... deal with errors ... } finally { // Always make sure result sets and statements are closed, // and the connection is returned to the pool if (rs != null) { try { rs.close(); } catch (SQLException e) { ; } rs = null; } if (stmt != null) { try { stmt.close(); } catch (SQLException e) { ; } stmt = null; } if (conn != null) { try { conn.close(); } catch (SQLException e) { ; } conn = null; } }

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• Website speed issue

  - by Jose David Garcia Llanos

  I've exhausted all my options. The website that I am developing had a load speed of 1.12 seconds and for some unknown reason it is now taking 2 seconds to connect then load. I've tried deactivating loads of plugins but is not the plugins or javascript or images. http://tools.pingdom.com/fpt/#!/ONC4QfFJt/n1bar.com I've tried re-configuring the cache and the .htacess file but still taking long for the first connection. Can someone help me find the problem...

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• PHP OCI8 and Oracle 11g DRCP Connection Pooling in Pictures

  - by christopher.jones

  Here is a screen shot from a PHP OCI8 connection pooling demo that I like to run. It graphically shows how little database host memory is needed when using DRCP connection pooling with Oracle Database 11g. Migrating to DRCP can be as simple as starting the pool and changing the connection string in your PHP application. The script that generated the data for this graph was a simple "Parts" query application being run under various simulated user loads. I was running the database on a small Oracle Linux server with just 2G of memory. I used PHP OCI8 1.4. Apache is in pre-fork mode, as needed for PHP. Each graph has time on the horizontal access in arbitrary 'tick' time units. Click the image to see it full sized. Pooled connections Beginning with the top left graph, At tick time 65 I used Apache's 'ab' tool to start 100 concurrent 'users' running the application. These users connected to the database using DRCP: $c = oci_pconnect('phpdemo', 'welcome', 'myhost/orcl:pooled'); A second hundred DRCP users were added to the system at tick 80 and a final hundred users added at tick 100. At about tick 110 I stopped the test and restarted Apache. This closed all the connections. The bottom left graph shows the number of statements being executed by the database per second, with some spikes for background database activity and some variability for this small test. Each extra batch of users adds another 'step' of load to the system. Looking at the top right Server Process graph shows the database server processes doing the query work for each web user. As user load is added, the DRCP server pool increases (in green). The pool is initially at its default size 4 and quickly ramps up to about (I'm guessing) 35. At tick time 100 the pool increases to my configured maximum of 40 processes. Those 40 processes are doing the query work for all 300 web users. When I stopped the test at tick 110, the pooled processes remained open waiting for more users to connect. If I had left the test quiet for the DRCP 'inactivity_timeout' period (300 seconds by default), the pool would have shrunk back to 4 processes. Looking at the bottom right, you can see the amount of memory being consumed by the database. During the initial quiet period about 500M of memory was in use. The absolute number is just an indication of my particular DB configuration. As the number of pooled processes increases, each process needs more memory. You can see the shape of the memory graph echoes the Server Process graph above it. Each of the 300 web users will also need a few kilobytes but this is almost too small to see on the graph. Non-pooled connections Compare the DRCP case with using 'dedicated server' processes. At tick 140 I started 100 web users who did not use pooled connections: $c = oci_pconnect('phpdemo', 'welcome', 'myhost/orcl'); This connection string change is the only difference between the two tests. At ticks 155 and 165 I started two more batches of 100 simulated users each. At about tick 195 I stopped the user load but left Apache running. Apache then gradually returned to its quiescent state, killing idle httpd processes and producing the downward slope at the right of the graphs as the persistent database connection in each Apache process was closed. The Executions per Second graph on the bottom left shows the same step increases as for the earlier DRCP case. The database is handling this load. But look at the number of Server processes on the top right graph. There is now a one-to-one correspondence between Apache/PHP processes and DB server processes. Each PHP processes has one DB server processes dedicated to it. Hence the term 'dedicated server'. The memory required on the database is proportional to all those database server processes started. Almost all my system's memory was consumed. I doubt it would have coped with any more user load. Summary Oracle Database 11g DRCP connection pooling significantly reduces database host memory requirements allow more system memory to be allocated for the SGA and allowing the system to scale to handled thousands of concurrent PHP users. Even for small systems, using DRCP allows more web users to be active. More information about PHP and DRCP can be found in the PHP Scalability and High Availability chapter of The Underground PHP and Oracle Manual.

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• Connection Timeout and Connection Lifetime

  - by Mark

  What is the advantage and disadvantage of connection timeout=0? And what is the use of Connection Lifetime=0? e.g (Database=TestDB;port=3306;Uid=usernameID;Pwd=myPassword;Server=192.168.10.1;Pooling=false;Connection Lifetime=0;Connection Timeout=0) and what is the use of Connection Pooling?

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• Connection Pooling vs Per-Thread JDBC Connection

  - by java_geek

  Which of these approaches is better ?

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• Web connection speed issue

  - by Iroll750

  I encounter a strange issue with my web (wireless) connection on my laptop (Ubuntu 11.10) I'm able to have 540kbps (down) on all computers in my house (including laptop at the same distance from the box) except me. When i do a speed connection test, i can have this optimal speed immediately after booting. As i surf on the net, watching videos, download things, etc... it becomes slower progressively until 100-110 kbps and the speed remain the same until i reboot. I tried to figure out if a process consume bandwith in background with nethogs but i found nothing suspicious. Any ideas ? Thanks in advance for your help !!

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• Website speed issues

  - by Jose David Garcia Llanos

  I am developing a website however i have noticed speed issues, i am not sure whether is due to the location of the server. I am not a guru when it comes to performance or speed issues, but according to a website speed test it seems that it takes quite a long time to connect to the website. Speed Test Results Can someone suggest something or give me some tips, the website address is http://www.n1bar.com

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• Benchmark for website speed optimization

  - by gowri

  I working on website speed optimization. I mostly used 3 tools for analyzing speed of optimization. Speed analyzing Tools: Google pagespeed tool Yslow Firefox extenstion Web Page Performance Test I am measuring performance using above tool and benchmark result as below like before and after. Before optimization : Google PageSpeed Insights score : 53/100 Web Page Performance Test : 55/100 (First View : 10.710s, Repeat view : 6.387s ) Yahoo Overall performance score : 68 Stage 1 After optimization : Google PageSpeed Insights score : 88/100 Web Page Performance Test : 88/100 (First View : 6.733s, Repeat view : 1.908s ) Yahoo Overall performance score : 80 My question is ? Am i doing correct way ? What is the best way of benchmark for speed optimization ? Is there any standard ? Is there any much better tool for analyzing speed ?

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• Sharing Internet Connection using an ad-hoc wifi network

  - by Apps

  I've installed a WiFi Adapter in my Windows XP PC and created an ad-hoc network. I am able to connect to the network through my iPod Touch. On the same PC I have a LAN connection to the Internet. I need to share this internet connection to my iPod too. The problem is Windows did not assign an IP Address (even though assign IP address automatically is selected) to this WiFi network. When I tried to share the Internet connection, I got a message that LAN Network Adapter's IP address will be changed to 192.168.1.1. But if this happens I will not be able to connect to other devices/servers in my LAN Network. How do I share the Internet connection through WiFi?

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• Internet connection slower than network connection speed

  - by Mike Pateras

  I've got a computer connected to a wireless router on a different floor. When I look at the network connection, I'm told the signal strength is low, and that I've got a connection of about 26mbps (often higher). However, my internet connection on that machine is very slow. Speedtests show it at about 1-2mbps, and it really shows when loading pages and video. I have fiber optic internet access, and the machine that's connected to the router/modem via cable gets the 20mbps on speed tests, and is extremely fast in every day use. My question is, is the advertised 26mbps+ connection speed perhaps inaccurate, and that my wireless bandwidth is the likely bottleneck here? Or is the signal strength what's key here? And what might I do about this? Power cycling the router helped a bit, a speed test went as high as 6mbps after doing that.

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• Increase animation speed according to the swipe speed in unity for Android

  - by rohit

  I have the animation done through Maya and brought the FBX file to unity. Here is my code to calculate the speed of the swipe: Vector2 speedMeasuredInScreenWidthsPerSecond =(Input.touches[0].deltaPosition / Screen.width) * Input.touches[0].deltaTime; Now I wanted to take speedMeasuredInScreenWidthsPerSecond and use it to increase the animation speed accordingly like this: animation["gmeChaAnimMiddle"].speed=Mathf.Round(speedMeasuredInScreenWidthsPerSecond); However, this results in an error that I need to convert Vector2 to float. So how do I overcome it?

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• Failed pinging a LAN card of the server from the client using shared internet connection

  - by bobo

  The server (Windows XP Pro SP3) has two LAN cards (LAN card A and B) and is connected to the internet using ADSL. The ADSL connection is shared to LAN card B using Internet Connection Sharing. The client (Windows XP Pro SP3) has one LAN card, and is connected to LAN card B of the server so that it has access to the internet. The IP address on the LAN cards are defined as follows: Server: LAN card A: 192.168.0.3/24 (manually defined by me) LAN card B: 192.168.0.1/24 (manually defined by Internet Connection Sharing) Client: LAN card: 192.168.0.123/24 (assigned by DHCP) Default gateway: 192.168.0.1 From the server, I can ping 192.168.0.123 successfully. From the client, it can access the internet without any problem. I can also ping 192.168.0.1 successfully but for 192.168.0.3, it failed with the Request Timeout error message. Why did the ping fail, and what should be done to make the ping possible? (all firewalls have been turned off.)

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• Using a Mac to share a VPN connection

  - by Luis Novo

  I am using an iMac to share a wired network connection with other devices in my house. I am using Apple's built-in sharing functionality which works very well. I have also been using Tunnelblick as an OpenVPN client. The two technologies work great when they are not used together. The moment I connect to my VPN, sharing stops working on all other devices; the whole point of this setup was for me to share my VPN connection. Is there a way to make Internet connection sharing and OpenVPN work together on the Mac? I am using Snow Leopard.

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• what are different connection speed ratings?

  - by Moshe

  I've heard different terms advertised for connection speeds . What are common ones today and what do they mean?

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• Iron Speed Designer 7.0 - the great gets greater!

  - by GGBlogger

  For Immediate Release Iron Speed, Inc. Kelly Fisher +1 (408) 228-3436 [email protected] http://www.ironspeed.com       Iron Speed Version 7.0 Generates SharePoint Applications New! Support for Microsoft SharePoint speeds application generation and deployment   San Jose, CA – June 8, 2010. Software development tools-maker Iron Speed, Inc. released Iron Speed Designer Version 7.0, the latest version of its popular Web 2.0 application generator. Iron Speed Designer generates rich, interactive database and reporting applications for .NET, Microsoft SharePoint and the Cloud.    In addition to .NET applications, Iron Speed Designer V7.0 generates database-driven SharePoint applications. The ability to quickly create database-driven applications for SharePoint eliminates a lot of work, helping IT departments generate productivity-enhancing applications in just a few hours.  Generated applications include integrated SharePoint application security and use SharePoint master pages.    “It’s virtually impossible to build database-driven application in SharePoint by hand. Iron Speed Designer V7.0 not only makes this possible, the tool makes it easy.” – Razi Mohiuddin, President, Iron Speed, Inc.     Integrated SharePoint application security Generated applications include integrated SharePoint application security. SharePoint sites and their groups are used to retrieve security roles. Iron Speed Designer validates the user against a Microsoft SharePoint server on your network by retrieving the logged in user’s credentials from the SharePoint Context.    “The Iron Speed Designer generated application integrates seamlessly with SharePoint security, removing the hassle of designing, testing and approving your own security layer.” -Michael Landi, Solutions Architect, Light Speed Solutions     SharePoint Solution Packages Iron Speed Designer V7.0 creates SharePoint Solution Packages (WSPs) for easy application deployment. Using the Deployment Wizard, a single application WSP is created and can be deployed to your SharePoint server.   “Iron Speed Designer is the first product on the market that allows easy and painless deployment of database-driven .NET web applications inside the SharePoint environment.” -Bryan Patrick, Developer, Pseudo Consulting     SharePoint master pages and themes In V7.0, generated applications use SharePoint master pages and contain the same content as other SharePoint pages. Generated applications use the current SharePoint color scheme and display standard SharePoint navigation controls on each page.   “Iron Speed Designer preserves the look and feel of the SharePoint environment in deployed database applications without additional hand-coding.” -Kirill Dmitriev, Software Developer, Iron Speed, Inc.     Iron Speed Designer Version 7.0 System Requirements Iron Speed Designer Version 7.0 runs on Microsoft Windows 7, Windows Vista, Windows XP, and Windows Server 2003 and 2008. It generates .NET Web applications for Microsoft SQL Server, Oracle, Microsoft Access and MySQL. These applications may be deployed on any machine running the .NET Framework. Iron Speed Designer supports Microsoft SharePoint 2007 and Windows SharePoint Services (WSS3). Find complete information about Iron Speed Designer Version 7.0 at www.ironspeed.com.     About Iron Speed, Inc. Iron Speed is the leader in enterprise-class application generation. Our software development tools generate database and reporting applications in significantly less time and cost than hand-coding. Our flagship product, Iron Speed Designer, is the fastest way to deliver applications for the Microsoft .NET and software-as-a-service cloud computing environments.   With products built on decades of experience in enterprise application development and large-scale e-commerce systems, Iron Speed products eliminate the need for developers to choose between "full featured" and "on schedule."   Founded in 1999, Iron Speed is well funded with a capital base of over $20M and strategic investors that include Arrow Electronics and Avnet, as well as executives from AMD, Excelan, Onsale, and Oracle. The company is based in San Jose, Calif., and is located online at www.ironspeed.com.

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• Extremely slow internet-connection?

  - by Martti Laine

  Hello Few days ago I opened my computer as I always do after school, and got pretty amazed about my 1.27kb/s download-speed. It has continued for few days already. We have a wireless network, which is used by 3 computers. Normally I've gotten 200kb/s (I think we have a 2mb-connection) but now it just suddenly slowed down. My friends have the same service-provider, but no problem. So, is there any kind of program, which would show me all the programs using connection and how much. It must be a program open which just takes all speed off. Any help is appreciated, Martti Laine

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• Router slowing my connection?

  - by Roberto

  I have a Linksys WRT54G and I pay for a 12Mbps connection. I've been testing my connection using speedtest.net for many days and always get 8Mbps. I called the support and they told me to bypass the router and test. I did it and got 16Mbps (much more than I pay for), so I thought "this guy just changed my speed so can he blame my router", and he blamed it. But to my surprise, everytime I bypass the router I get 16Mbps and when I use the router I get 8Mbps. Is this guy trolling me somehow (configuring the VOIP-modem-stuff to different profiles depending o the MAC address connecting to it) or is my router a POS? How can I find out? I don't know what's the thing the router connects to, it's a kind of VOIP adapter; the link is this one, but unfortunately I don't think you'll understand because it's in Portuguese. I know they can remotely connect to it, that's the origin of my conspiracy theory :) I just tested wired to the router and got 10Mbps (and still 8Mbps on wifi and 16Mbps without router) O_o I'm 5cm away from my router, so no obstacles to interfere, right? ------ UPDATE ------- It's a WRT54G V8, I'm using firmware v8.00.7 (will install 8.00.8 tomorrow, but I saw that it's only a minor fix to UPnP denial of service security vulnerability). Results: IPerf LAN-LAN: 80Mbps IPerf LAN-WLAN: 19Mbps (therefore we can ignore wireless issues/settings) I wasn't able to make the (W)LAN-WAN NAT-enabled test with IPerf, I get a connection refused error. I'm not sure if did it right: ran in server mode, configured router to forward that port to my IP and tried to connect to my internet IP that got from this site. I don't think there is a way to disable NAT using this firmware. Question: Let's suppose it's an underpowered hardware issue. Is it right to assume that custom firmwares could resolve the issue because they are possibly better implemented and would make better use of the router resources? I couldn't find any references pointing to wired performance improvements with the use of custom firmware.

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• Page Speed and it’s affect on your business

  - by ihaynes

  Originally posted on: http://geekswithblogs.net/ihaynes/archive/2014/05/29/page-speed-and-itrsquos-affect-on-your-business.aspxPage speed was an important issue 10 years ago, when we all had slow modems, but became less so with the advent of fast broadband connections that even seemed to make Ajax unnecessary.  Then along came the mobile internet and we’re back to a world where page speed and asset optimisation are critical again. If you doubt this an article on SitePoint discussing ’Page Speed and Business Metrics’ may change your mind. http://www.sitepoint.com/page-speed-business-metrics/ Here are some of the figures it quotes: Walmart – saw a 2% increase in conversions for every second of improvement in page load time. Put another way, accumulated growth of revenues went up 1% for every 100 milliseconds of load time improvement. Yahoo – for every 400 milliseconds of improvement, the site traffic increased by 9%. The bottom line is that if people have to wait more than a few seconds for a page to fully render, particularly on a mobile device, they’ll probably go elsewhere. Ignore this at your peril.   For two previous posts on the subject see: Page Weight: 10 easy fixes Xat.com Image Optimiser – Useful for RWD/Mobile

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• Hardening network with sysctl settings made Wi-fi downloading speed extremely slow

  - by Rohit Bansal

  I just followed up following steps to harden network security The /etc/sysctl.conf file contain all the sysctl settings. Prevent source routing of incoming packets and log malformed IP's enter the following in a terminal window: sudo vi /etc/sysctl.conf Edit the `/etc/sysctl.conf` file and un-comment or add the following lines : # IP Spoofing protection net.ipv4.conf.all.rp_filter = 1 net.ipv4.conf.default.rp_filter = 1 # Ignore ICMP broadcast requests net.ipv4.icmp_echo_ignore_broadcasts = 1 # Disable source packet routing net.ipv4.conf.all.accept_source_route = 0 net.ipv6.conf.all.accept_source_route = 0 net.ipv4.conf.default.accept_source_route = 0 net.ipv6.conf.default.accept_source_route = 0 # Ignore send redirects net.ipv4.conf.all.send_redirects = 0 net.ipv4.conf.default.send_redirects = 0 # Block SYN attacks net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_max_syn_backlog = 2048 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_syn_retries = 5 # Log Martians net.ipv4.conf.all.log_martians = 1 net.ipv4.icmp_ignore_bogus_error_responses = 1 # Ignore ICMP redirects net.ipv4.conf.all.accept_redirects = 0 net.ipv6.conf.all.accept_redirects = 0 net.ipv4.conf.default.accept_redirects = 0 net.ipv6.conf.default.accept_redirects = 0 # Ignore Directed pings net.ipv4.icmp_echo_ignore_all = 1 To reload sysctl with the latest changes, enter: sudo sysctl -p But, after applying the changes I found "Wi-fi" downloading speed and terminal downloading speed extremely slow (less than 1KB/s) however surfing speed through browser was good. But, using direct ethernet cable was giving a good speed. Then, I reverted back the above changes and things fall back in line once again.... Could you please let me know what possibly in above script is affecting such behaviour [and why] ? How could I still maintain hardening of network security without disturbing Wi-fi downloading speed ?

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• Download speed in ubuntu

  - by Shagun

  When I use IDM to download anything on my Windows I get a speed of around 4-5 Mbps but for the same connection speed in Ubuntu (12.04) is around 600kbps. I tried wget, Kget Uget and so many other download managers but no increase in speed.Also none of these was as user friendly or efficient as IDM like they don't give an option of downloading things on their own. Each time I have to open the the application and manually type in the url. What are the options available for me?

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• Connection to SQL Server 2008 R2 Database Server is SLOW

  - by AbeP

  The database server is a VM running SQL Server 2008 R2 on top of Windows Server 2012, 24GB RAM allocated and 2TB of disk space. Overall, the database connections are very slow and one thing that stands out is that the connection to the database server via SSMS takes 5-10 seconds. On other much less powerful servers, it takes 1-2 seconds. The VM is technically way more powerful than other machines, but the connection to the server is too slow. So, my guess is the issue is network related, but any clues on where I should be looking? Thanks!

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• mysql connection is slow (5seconds)

  - by acidzombie24

  After building my webapp on a first boot i create 2 connections to mysql on debian then 1-2 (r/w) for every page after that. The connection consistently take 5.2 seconds to connect. Debian is in a VM running in my OS. Why is the connection taking this long? At times it will take < 0.1 seconds which is great but 5.2 x2-3 on every run is to much. Has anyone experience this problem? how do i solve it? note: I am using .NET to connect. Not that it matters. and its mysql v5

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• How to throttle your own internet connection?

  - by darkAsPitch

  I am writing a website and want to test it's speed on slower internet connections. I have the unfortunate first world problem of downloading at 100mbps, how can I throttle my own computer's internet connection to 56kbps or 5mbps to give myself an idea of how my users might be downloading my website? EDIT: I am using Windows primarily but also have an ubuntu laptop if the answer is linux oriented.

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• MYOB odbc connection problem

  - by Inam Jameel

  Hi guys, i recently got a prebuild application which uses MYOB odbc connection to myob file. the odbc connection works perfectly in that application i uses the same odbc connection string in other application but it failed to open in that application. the connection string is perfectly identical but it wont works the new application. Server explorer in the visual studio 2008 connects as well with the same connection string. is it a trusted application issue? because my new application is digitally signed at the moment OdbcConnection odbc = new OdbcConnection("Driver=MYOAU0901;TYPE=MYOB; UID=Administrator; PWD=; DATABASE=C:\\Premier125\\Clearwtr.MYO; NETWORK_PROTOCOL=NONET; DRIVER_COMPLETION=DRIVER_NOPROMPT;;KEY=****"); odbc.Open(); the key used in the connection string is also valid for sure kindly help me i have to deliver a prototype in 2 days the same connection string is works in one application but not in other application whats the problem?

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