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• How many xml http requests is too much for a pc to handle?

  - by Uri

  I'm running mediawiki on an apache on a regular pc running vista (don't know the specific specs, but I'm guessing at least duo core 2 2 giga hertz processor, broadband connection (500 kb/s at least, probably 1 mega). I want to use the MediaWiki api to send a lot of requests to this server. Most of the time the requests will be sent through LAN (but sometimes through the internet). I'm talking thousands of requests every few seconds at worst case. (A lot of these requests may repeat themselves, I guess some sort of cache would help) Will the server handle this, or do I need a stronger/dedicated computer? (I'm not looking for specific yes/no, but just want to get an idea as to what configuration of computer will support how many request per second) Thanks

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• QPS for dnscache

  - by vedaprasad

  I have 2 internal DNS servers ( ns1 & ns 2 ) on ubuntu 12.04 which run dnscache , and my clients resolv.conf have something like nameserver ns1 nameserver ns2 nameserver 8.8.8.8 since all my load is taken by ns1 , where as ns2 sits idle until ns1 is down or not serving my request . i would like to add these 2 server under a LB VIP . but my network team wants to know the QPS of the ns servers so that their LB is loaded . so is there any way to find out the QPS of dns queries running Dncache

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• Inconsistent slow DB connect times

  - by mcryan

  I have an app that shows significantly increased load times every 5 minutes. We use New Relic and I've been able to identify that every slow request is due to our DB connect functions. I've looked through our frontend servers and db servers and have ensured that there are no cronjobs running every 5 minutes - though the increase comes every 5 minutes without fail. I feel like I've tried everything I can to isolate this but I'm not having any luck. It is not coming from a cronjob, there is no cache expiring every 5 minutes, etc. What else could I check, and does anyone know of anything that could cause this sort of behavior? For what it's worth - our stack includes Apache, PHP, MySQL, Varnish and Memcache. SQL and memcache are running on dedicated servers and we have a number of frontend servers behind a load balancer, each running Apache and Varnish. Spike every 5 minutes: And it's always db connect (in red) taking up all of the time:

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• Compression for custom mime type works on IIS 7.5, but not IIS 7.0?

  - by Doogal

  I've managed to set up compression for a custom mime type on IIS 7.5 with no problem. Add the mime type to IIS then add it to the httpCompression element in applicationHost.config. But when I do the same thing on IIS 7, the particular mime type is never compressed. This isn't a problem with compression in general since other mime types are compressed correctly. As far as I can tell, IIS 7 and IIS7.5 are configured in exactly the same way. Does IIS7 behave differently and do I need to do something else to get it working? I've setup failed request tracing and get a NO_MATCHING_CONTENT_TYPE error during compression but I can't figure out what else I need to do to tell IIS about my mime type

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• Windows XP - Website unaccessible on single pc in LAN

  - by DorentuZ

  For serveral days now, a website isn't accessible on a single pc in the LAN. On the other pc's, it works just fine. And it's just a single website that's not accessible as far as I know of. The website generates a timeout on every single web browser I've tried (IE8, Firefox and Chrome). However, traceroute, nmap and telnet all work just fine. I've even tried multiple user accounts and safe mode, but that didn't work either. As a side note: using a linux live cd did work and I could access the website without any problems. The hosts file is the windows default, the ip- and dns settings on the network adapter normal as well. No strange processes are running and no viruses found. According to tcpview and netstat there are connections to the domain, but every request in the browser results in a timeout.. Any idea what's happening?

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• IIS 6.0 :: SSL certificate install :: issue

  - by BSI Support

  Certificate request process works fine. Once the certificate is received from VeriSign, the installation process also works fine (no errors.) However, once installed, the new certificate is not "assigned." Meaning, when I view the IIS instance security properties, it still shows the previous certificate start & end dates. Thoughts? Windows 2003, Web Edition. I have 3 other Win2003WE machines, configured nearly the same, and do not have this problem.

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• SMTP 25 blocked externally

  - by Jeff

  not sure how to title this question... we run an exchange server with around 80 internal users, all outgoing mail is relayed off a smart host (ISP smtp server) so nothing is actually sent to the world via our server. i wanted to check the server, locally i can telnet to port 25 with no issues and receive the esmtp service ready reply. whenever i do it from an external address (off our local network) i receive unable to connect error 10060. can this cause problems with SPF records, and reverse DNS ? should my exchange server be able to accept smtp requests, requiring authentication before i am able to send from external addresses? if so how... also the exchange server is behind a NAT (asa) device, more than likely thinking that the nat is not configured to route the smtp 25 request to the exchange server.. thanks

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• Dropping Cached Memory on FreeBSD

  - by user1066698

  i use FreeNAS server which is built on OS version FreeBSD 8.2-RELEASE-p6. I use ZFS file system with 13TB HDD on my 8GB physical ram installed box. It almost uses all of RAM installed while proccessing some request. However, it still uses same amount of memory on idle times. So this is becoming a problem sometimes. On my centos web server; i use following command to drop cached memory with a cronjob; sync; echo 3 > /proc/sys/vm/drop_caches However, this command does not work on my Freenas server. How can i drop cached memory on my FreeNAS box which is built on FreeBSD 8.2 Thank you

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• how to monitor traffic at port 53 (DNS)

  - by Registered User

  I am a bit confused with the abundant tcpdump tutorials on internet. I am having a few of the virtual machines running on a virtualization server.Where I am debugging a problem.Port 53 is the one in problem. I have a bridged setup where out of 4 LAN cards on the machine in question one is active and it is xen-br0 I want to check if there is any request coming on port 53 on the server by other machines on LAN in question. I also want to see if the guest operating systems on LAN or any other machine is sending traffic at port 53.Due to abundant messages being generated via tcpdump I am finding it difficult to grep the output at desired port. So how can I use it if some one can give an example that would be helpful. Thanks in advance.

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• Firefox unable to load SSL Certificate Chain, while Chrome, IE do

  - by FryBurger

  I created a certificate for our IIS 6 by sending a request (created with openssl) to our organization's CA. I already had trouble to integrate the private key into that certificate, that has been solved, see SO question IIS 6.0 now uses the certificate (with TSL v1 and SSL v3), that is the 4th in cert hierarchy. Now, if I access the intranet site, chrome accepts the certificate, so does IE, but Firefox complains about an insecure connection and wants me to add an exceptional rule. If I look into the certificate, how FF presents it to me, I cannot see any of the three issuers. How can this be? If I connect via openssl s_client -showcerts -connect... I only see my own certificate too, which is said to be not verified. I am quite confused now. Where's the mistake and how can I make FF accept certificate without forcing our users to add that exceptionrule? Maybe do I have to add all the three issuer certificates into cert store of the win2003 server that hosts IIS 6.0 ??

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• NGINX Document Location

  - by GLaDOS

  I want to be able to access a given url, example.com/str. The problem is that the php file that I want to connect to is in a directory of /str/public/. In my nginx logs, I see that it is trying to connect to /str/public/str/index.php. Is there any way to remove that last 'str' in the document request? Below is my location directive in sites-available/default: location /str { root /usr/share/nginx/html/str/public/; index index.php index.html index.htm; location ~ ^/str/(.+\.php)$ { try_files $uri = 404; root /usr/share/nginx/html/str/public/; fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } Thank you all so much in advance.

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• nginx load balance with IIS backend servers waiting Host header

  - by Elgreco08

  i have a ubuntu 10.04 with nginx /0.8.54 running as a load balance proxy named: www.local.com I have two IIS backend servers which responds on Host header request web1.local.com web2.local.com Problem: When i hit my nginx balancer on www.local.com my backend servers respond with the default server blank webpage (IIS default page) since they are waiting for a right host header (e.g. web1.local.com) my nginx.conf upstream backend { server web1.local.com:80; server web2.local.com:80; } server { listen 80; location / { proxy_pass http://backend; proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $proxy_host; } } any hint ?

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• Monitoring/logging a malfunctioning internet connection

  - by Pekka

  I have a mysterious internet connection problem: Every 15-20 minutes, the connection will become very slow, and take 2-3 minutes for anything to load. I've had a technician from the ISP over here to test the hardware, and everything is in pristine condition. They have no other explanation than a configuration error on my machine, a possibility I can exclude 90% because I'm experiencing the same problems with another machine. I will have to monitor the situation now, and I would like to run a program that logs when internet connections become slow. I thought about putting something together using at and wget. Does anybody know of some other tool for this that does this out of the box - maybe something with an adjustable request frequency, logging connection speeds etc.?

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• What factors can affect performance of Http Server written in C-Sharp? [on hold]

  - by Yousaf

  I am having trouble in terms of handling huge databases. I have multiple clients like 100-300 (clients are basically servers with i.e windows sql). Each client may have 38 thousand rows/listing of data, each row has 10-12 fields. I cannot afford to have json files of each client and than handle them on main server, because of memory issue. What if i have http server written in c or c# installed on clients and they return 250 rows in each response to the main server. How the factors like speed, memory or other issues can effect us ? What exactly I am asking for ? In short words if a server writter in c-sharp sends 250 rows per request. What factors can effect the performance of server ? for example. Speed, processing, Operating system, Implementation of algorithm of server ? How these factors can really effect the performance on large scale?

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• how to deal with controller mutations

  - by Milovan Zogovic

  During development process, things are constantly changing (especially in early phases). Requirements change, UI changes, everything changes. Pages that clearly belonged to specific controller, mutated to something completely different in the future. For example. Lets say that we have website for managing Projects. One page of the website was dedicated to managing existing, and inviting new members of specific project. Naturally, I created members controller nested under projects which had proper responsibility. Later in the development, it turned out that it was the only page that was "configuring the project" in some way, so additional functionalities were added to it: editing project description setting project as a default ... In other words, this page changed its primary responsibility from managing project members to managing project itself. Ideally, this page should be moved to "edit" action of "projects" controller. That would mean that all request and controller specs need to refactored too. Is it worth the effort? Should it be done? Personally, I am really starting to dislike the 1-1 relationship between views and controllers. Its common situation that we have 1 page (view) that handles 2 or more different resources. I think we should have views completely decoupled from controllers, but rails is giving us hard time to achieve this. I know that AJAX can be used to solve this issue, but I consider it an improvisation. Is there some other kind of architecture (other than MVC) that decouples views from controllers?

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• Too Many ESTABLISHED connection from a single IP address in Apache

  - by ananthan

  netstat -ntp |grep 80 shows too many ESTABLISHED connection from single IP address. Around 300 of them and it is not an attack and user is using a 2G connection to access Apache. This is the case with other 2G connections also. As a result of this Apache is running out of children. Earlier it was showing too many close_wait and after enabling tcp_tw_reuse and tcp_tw-recycle there is not much close_wait but the number of ESTABLISHED connections increased. We are using Ubuntu 11.04 having 48 GB ram keepalive On keepalive timeout 10 max clients 800 max-request-perchild 4000 timeout 300 I have set syn_ack to 1 and syn_retries to 2. On wifi there is no such issue. Connections are closing properly, but with 2G connections Apache is running out of children and too many ESTABLISHED connection. also i have tried setting timeout from default 300 to 30,but since our project is image hosting for mobile phones,clients couldn't upload images properly as they are getting frequent time out.Also there were a lot of 408 messages so changed it to the default 300

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• Learn about the Exciting New WebCenter Content 11.1.1.8 Features by Attending the Advisor Webcast on November 21st!

  - by AlanBoucher

  Have you been looking for a place to store your content securely and in an organized fashion, while needing to access it while you are on the go? Well you can!  Learn about the new Mobile App for WebCenter Content 11.1.1.8 along with other exciting new features by attending the Advisor Webcast called WebCenter Content 11.1.1.8 Overview and Support Information. November 21, 2013 at 11 am ET, 10 am CT, 9 am MT, 8 am PT, 5:00 pm, Europe Time (Paris, GMT+01:00) This one-hour session is recommended for technical and functional users who have installed or will install WebCenter Content 11.1.1.8 or would just like more information on the latest release. TOPICS WILL INCLUDE: Overview of new features and enhancements Installation of the new Content UI Upgrading from older WebCenter Content versions Support issues including latest patches Roadmap of proposed additional features REGISTER NOW and mark your Calendar:1. Event address for attendees: https://oracleaw.webex.com/oracleaw/onstage/g.php?d=590991341&t=a2. Register for the meeting.Once the host approves your request, you will receive a confirmation email with instructions for joining the meeting.

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• Release Notes for 6/28/2012

  Here are the notes for this week’s release on CodePlex: Improved the diff viewer to take you directly to the first diff when viewing a file’s diff. We decreased the size of all of our form elements to be more in line with the rest of the content of our site. Fixed various issues around interacting with the diff viewer, especially around scrolling and interacting with the splitter. Fixed an issue where non-project members were seeing inapplicable TFS connection instructions when clicking on the source code details of a project. Fixed an issue where searching with the enter key on the advanced issue tracker was not working. Removed the confirmation pop-up when picking SVN as a source control option. Fixed an issue where the bulk editing dialog of issues in Internet Explorer would become unusable if there were values to choose. Fixed an issue where project logos would not show up when browsing under https in FireFox and Chrome. Fixed an issue affecting the formatting of code in pull request code comment notifications. Have ideas on how to improve CodePlex? Visit our ideas page! Vote for your favorite ideas or submit a new one. Got Twitter? Follow us and keep apprised of the latest releases and service status at @codeplex.

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• How to do safely test Biztalk app by manipulating the Windows OS system time w/o breaking the Active Directory?

  - by melaos

  i have a biztalk - window service tied middleware application which talks to other system. recently we had a request to test for scenarios which relates to the date. as we have a lot of places in the application which uses the .net Datetime.Now value, we don't really want to go into the code level and change all these values. so we're looking at the simplest way to test which is to just change the OS time. but what we notice is that sometimes when we change the system date time, we will get account lock out due to Active Directory. So my question is what's a good and safe way that i can test for future dates, etc by changing the windows OS system date time but without causing any issues with the Active Directory. And where can i find out more about AD and how it issues token and what's the correlation with the system date time changes. Thanks! ~m

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• Can't Connect To A Game Server

  - by Kirs Kringle

  I'm having issues connecting to a certain game server. The game is Space Engineers. I did a wireshark and the owner of the server did as well and it just tries to request and bind until it times out on the client of the game. Nothing is dropped or red it just doesn't connect to download data from the server. Other people are able to connect to the server just fine. I do not think it is an issue with the server, but what could it possibly be and what can I do to get rid of this problem? I've tried cleaning registry, shutting off windows firewall, restarting my computer, and most recently the wireshark. Thanks,

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• Single web app, multiple web servers

  - by Ramakrishna

  I have a problem of load balancing. We developed a web app for nearly 1500 users. As the number of users increased we are unable to serve the requests in a timely manner. It takes around 10 to 20 seconds to load a page. Under heavy load it can take one minute to serve the page. We need to solve this situation so that each request is served in 2 or 3 seconds. App develped in : asp.net Hosted in : IIS 7.5 Machine configuration : Windows Server 2008, 8GB RAM, 1Mbps bandwidth

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• Remote location's status "Disconnected", how to keep it connected (OK)? [net-use-command]

  - by AZ

  I have an script that keeps running, under some scenarios, it needs to contact a server (\\us-sign). From time to time, if this server remains uncontacted for a while, the next time my script needs it, it will ask for my credentials. What I found is that, after such thing happening and using net use, such server will be displayed as disconnected. if I type "net use \\us-sign", it won't ask me neither user nor password, what makes me believe, my credentials for such server are still "valid", nonetheless, its status will remain "disconnected". This script is supposed to help us automate some procedures, but the need to keep a watch on it shall it request for credentials, it kind of defeats the purpose. How can I keep its status "OK" no matter how long it is not being contacted?

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• How Do I enable Safe Asynchronous Write With NFS?

  - by Joe Swanson

  The NFSv3 documentation talks alot about the concept of "safe asynchronous writes" (last bullet of A1): http://nfs.sourceforge.net/#section_a This is NOT referring to the sync/async option in the server exports file (as the async option in the exports file is NOT safe). As I understand it, safe asynchronous writes is a hybrid between the sync/async exports option. It allows for a server to reply back without flushing to stable storage immediately, but the client will not remove the write request from cache until it has received confirmation that it has been committed to stable storage (and also detects if the server looses power/reboots). I believe that this option is set on the client side, but I have not come across any documentation that shows how to do this. Any ideas?

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• Wget a directory with exact filenames?

  - by kaspr

  The following works because I inserted the exact filename: wget --referer=http://www.*****.com --cookies=on --load-cookies=cookie.txt --keep-session-cookies --save-cookies=cookie.txt http://www.*****.com/doc/GG-15252252.html But if I just do it with the doc dir I will get a 403 error message: Connecting to www.*****.com|***.**.***.**|:**... connected. HTTP request sent, awaiting response... 403 Forbidden 2010-11-04 21:25:38 ERROR 403: Forbidden. So I can't list the dir, what can I do? Please help anybody and thanks :)!!

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• File report ignoring NTFS permissions

  - by Edulin

  I need to inventory based on file age a huge NAS. Some folders are restricted, and only users or groups have rights. As you probably know Treesize is the best solution, the only problem I found is that if I want to script it it only takes a screenshot instead of writing the information to a text file. (If done through the GUI I'm allowed to copy/paste into text, but I need to script it, several shares). Robocopy /l lists the files but I also need to know the dates (last access / last modify) I saw a kernel driver by hobeanu to bypass ntfs permissions. But do you know any easier way to bypass ntfs permissions? or any other application that allows this type of request and save the information to a text file. (scriptable) Thanks

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