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  • Locating memory leak in Apache httpd process, PHP/Doctrine-based application

    - by Sam
    I have a PHP application using these components: Apache 2.2.3-31 on Centos 5.4 PHP 5.2.10 Xdebug 2.0.5 with Remote Debugging enabled APC 3.0.19 Doctrine ORM for PHP 1.2.1 using Query Caching and Results Caching via APC MySQL 5.0.77 using Query Caching I've noticed that when I start up Apache, I eventually end up 10 child processes. As time goes on, each process will grow in memory until each one approaches 10% of available memory, which begins to slow the server to a crawl since together they grow to take up 100% of memory. Here is a snapshot of my top output: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1471 apache 16 0 626m 201m 18m S 0.0 10.2 1:11.02 httpd 1470 apache 16 0 622m 198m 18m S 0.0 10.1 1:14.49 httpd 1469 apache 16 0 619m 197m 18m S 0.0 10.0 1:11.98 httpd 1462 apache 18 0 622m 197m 18m S 0.0 10.0 1:11.27 httpd 1460 apache 15 0 622m 195m 18m S 0.0 10.0 1:12.73 httpd 1459 apache 16 0 618m 191m 18m S 0.0 9.7 1:13.00 httpd 1461 apache 18 0 616m 190m 18m S 0.0 9.7 1:14.09 httpd 1468 apache 18 0 613m 190m 18m S 0.0 9.7 1:12.67 httpd 7919 apache 18 0 116m 75m 15m S 0.0 3.8 0:19.86 httpd 9486 apache 16 0 97.7m 56m 14m S 0.0 2.9 0:13.51 httpd I have no long-running scripts (they all terminate eventually, the longest being maybe 2 minutes long), and I am working under the assumption that once each script terminates, the memory it uses gets deallocated. (Maybe someone can correct me on that). My hunch is that it could be APC, since it stores data between requests, but at the same time, it seems weird that it would store data inside the httpd process. How can I track down which part of my app is causing the memory leak? What tools can I use to see how the memory usage is growing inside the httpd process and what is contributing to it?

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  • Locating memory leak in Apache httpd process, PHP/Doctrine-based application

    - by Sam
    I have a PHP application using these components: Apache 2.2.3-31 on Centos 5.4 PHP 5.2.10 Xdebug 2.0.5 with Remote Debugging enabled APC 3.0.19 Doctrine ORM for PHP 1.2.1 using Query Caching and Results Caching via APC MySQL 5.0.77 using Query Caching I've noticed that when I start up Apache, I eventually end up 10 child processes. As time goes on, each process will grow in memory until each one approaches 10% of available memory, which begins to slow the server to a crawl since together they grow to take up 100% of memory. Here is a snapshot of my top output: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1471 apache 16 0 626m 201m 18m S 0.0 10.2 1:11.02 httpd 1470 apache 16 0 622m 198m 18m S 0.0 10.1 1:14.49 httpd 1469 apache 16 0 619m 197m 18m S 0.0 10.0 1:11.98 httpd 1462 apache 18 0 622m 197m 18m S 0.0 10.0 1:11.27 httpd 1460 apache 15 0 622m 195m 18m S 0.0 10.0 1:12.73 httpd 1459 apache 16 0 618m 191m 18m S 0.0 9.7 1:13.00 httpd 1461 apache 18 0 616m 190m 18m S 0.0 9.7 1:14.09 httpd 1468 apache 18 0 613m 190m 18m S 0.0 9.7 1:12.67 httpd 7919 apache 18 0 116m 75m 15m S 0.0 3.8 0:19.86 httpd 9486 apache 16 0 97.7m 56m 14m S 0.0 2.9 0:13.51 httpd I have no long-running scripts (they all terminate eventually, the longest being maybe 2 minutes long), and I am working under the assumption that once each script terminates, the memory it uses gets deallocated. (Maybe someone can correct me on that). My hunch is that it could be APC, since it stores data between requests, but at the same time, it seems weird that it would store data inside the httpd process. How can I track down which part of my app is causing the memory leak? What tools can I use to see how the memory usage is growing inside the httpd process and what is contributing to it?

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  • map xml element to xsd complexType based on attribute

    - by Joshua Johnson
    Assume there exists an XML instance document that looks like this: <root> <object type="foo"> <!-- ... --> </object> <object type="bar"> <!-- ... --> </object> </root> My goal is to have a small (static) schema that verifies proper <element type="xxx" /> syntax for objects, and another schema (more prone to change) that verifies the contents of each object element against a complexType that matches the type attribute: <complexType name="foo"><!--should match object with type="foo"--></complexType> <complexType name="bar"><!--should match object with type="bar"--></complexType> What is the best way to accomplish this (or something similar)?

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  • JSP/Servlet CRUD form with special input field based on join table relationship

    - by user1701467
    There's database with a bunch of tables that are joined with join tables. E.g. Members and Division are joined with MembersDivisions table. JSP/Servlet login functionality has been developed, but now the CRUD functionality needs to be implemented and I was unable to find any tutorials about it, especially involving the join table(when creating new division you can add members to it, or add more to the existing one). Maybe someone could, theoretically, explain how to do the Division part of the CRUD web form?

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  • WPF Listview- What would be the best way to display data from different ObservableCollections based

    - by highone
    I have three ObservableCollections: CharacterCollection, LocationCollection, and ItemCollection. They are all collections of objects; CharacterCollection is a collection of Character Objects. I need to display, in the listview, information from the collection determined by the user clicking on a button. I would prefer to use databinding, but I don't see a clear cut way to do that with multiple collections containing different types of objects. What would be the best way to easily switch between collections?

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  • Sort NSArray of custom objects based on sorting of another NSArray of strings

    - by Nic Hubbard
    I have two NSArray objects that I would like to be sorted the same. One contains NSString objects, the other custom Attribute objects. Here is what my "key" NSArray looks like: // The master order NSArray *stringOrder = [NSArray arrayWithObjects:@"12", @"10", @"2", nil]; The NSArray with custom objects: // The array of custom Attribute objects that I want sorted by the stringOrder array NSMutableArray *items = [[NSMutableArray alloc] init]; Attribute *attribute = nil; attribute = [[Attribute alloc] init]; attribute.assetID = @"10"; [items addObject:attribute]; attribute = [[Attribute alloc] init]; attribute.assetID = @"12"; [items addObject:attribute]; attribute = [[Attribute alloc] init]; attribute.assetID = @"2"; [items addObject:attribute]; So, what I would like to do is use the stringOrder array to determine the sorting of the items array of custom objects. How can I do this?

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  • PHP Sort Array based on values in another.....

    - by Fearghal
    Need some help regarding array sorting.... I have two arrays. The main one (where the key is the user id) : $user[31] = 'Tom' $user[43] = 'Jane' and another array with the order they should be displayed (where key is the order and value is the user id) : $order[1] = 43 $order[2] = 31 How can I apply the ordering to the main array using the ordering one? Thanks guys!

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  • Search and Replace within a Text file using mySQL queries

    - by user241000
    How can I create PHP to search the testing.txt file for each name in the database table and replace the name with the database table id? So that the text file looks like this: 3 | 1 | 4 | 5 2 | 3 | 6 4 | 5 | 2 and so forth an so on... I have a mysql table called "nameslist" that looks like this: --------------------- id | name --------------------- 1 | bob 2 | john 3 | tom and so forth an so on... I have a text file called "testing.txt" that looks like this: tom | bob | mary | paul john | tom | rachel mary | paul | john and so forth an so on...

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  • Extracting Text from between parentheses in PHP using preg_replace

    - by Christopher
    I am trying to take a string of text like so: $string = "This (1) is (2) my (3) example (4) text"; In every instance where there is a positive integer inside of parentheses, I'd like to replace that with simply the integer itself. The code I'm using now is: $result = preg_replace("((\d+))", "$0", $string); But I keep getting a "Delimiter must not be alphanumeric or backslash" error. Any thoughts? I know there are other questions on here that sort of answer the question, but my knowledge of regex is not enough to switch it over to this example.

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  • JQuery UI sortable: restore position based on some condition

    - by dafi
    I call sortable.stop() to make an ajax call to store some data after drag&drop operation. When the ajax call returns an error (application logic error or net problem) I want to move the dragged element to its original/start position, how can I achieve it? The scenario should be user drags A to B the sortable.stop() event is called, it triggers an ajax call the ajax call returns an error inside the stop() event we get the ajax error move A to its original position user again move A to B everything is ok A remains in its new position in B Steps 6-8 are shown to clarify a successive drag can be done and previous error must be forgotten

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  • php: showing my country based on my IP, mysql optimized

    - by andufo
    I'm downloaded WIPmania's worldip table from http://www.wipmania.com/en/base/ -- the table has 3 fields and around 79k rows: startip // example: 3363110912 endip // example: 3363112063 country // example: AR (Argentina) So, lets suppose i'm in Argentina and my IP address is: 200.117.248.17 1) I use this function to convert my ip to long function ip_address_to_number($ip) { if(!$ip) { return false; } else { $ip = split('\.',$ip); return($ip[0]*16777216 + $ip[1]*65536 + $ip[2]*256 + $ip[3]); } } 2) I search for the proper country code by matching the long converted ip: $sql = 'SELECT * FROM worldip WHERE '.ip_address_to_number($_SERVER['REMOTE_ADDR']).' BETWEEN startip AND endip'; which is equivalent to: SELECT country FROM worldip WHERE 3363174417 BETWEEN startip AND endip (benchmark: Showing rows 0 - 0 (1 total, Query took 0.2109 sec)) Now comes the real question. What if another bunch of argentinian guys also open the website and they all have these ip addresses: 200.117.248.17 200.117.233.10 200.117.241.88 200.117.159.24 Since i'm caching all the sql queries; instead of matching EACH of the ip queries in the database, would it be better (and right) just to match the 2 first sections of the ip by modifying the function like this? function ip_address_to_number($ip) { if(!$ip) { return false; } else { $ip = split('\.',$ip); return($ip[0]*16777216 + $ip[1]*65536); } } (notice that the 3rd and 4th splitted values of the IP have been removed). That way instead of querying these 4 values: 3363174417 3363170570 3363172696 3363151640 ...all i have to query is: 3363110912 (which is 200.117.0.0 converted to long). Is this right? any other ideas to optimize this process? Thanks!

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  • A problem with connected points and determining geometry figures based on points' location analysis

    - by StolePopov
    In school we have a really hard problem, and still no one from the students has solved it yet. Take a look at the picture below: http://d.imagehost.org/0422/mreza.gif That's a kind of a network of connected points, which doesn't end and each point has its own number representing it. Let say the numbers are like this: 1-23-456-78910-etc. etc.. (You can't see the number 5 or 8,9... on the picture but they are there and their position is obvious, the point in middle of 4 and 6 is 5 and so on). 1 is connected to 2 and 3, 2 is connected to 1,3,5 and 4 etc. The numbers 1-2-3 indicate they represent a triangle on the picture, but the numbers 1-4-6 do not because 4 is not directly connected with 6. Let's look at 2-3-4-5, that's a parallelogram (you know why), but 4-6-7-9 is NOT a parallelogram because the in this problem there's a rule which says all the sides must be equal for all the figures - triangles and parallelograms. Also there are hexagons, for ex. 4-5-7-9-13-12 is a hexagon - all sides must be equal here too. 12345 - that doesn't represent anything, so we ignore it. I think i explained the problem well. The actual problem which is given to us by using an input of numbers like above to determine if that's a triangle/parallelogram/hexagon(according to the described rules). For ex: 1 2 3 - triangle 11 13 24 26 -parallelogram 1 2 3 4 5 - nothing 11 23 13 25 - nothing 3 2 5 - triangle I was reading computational geometry in order to solve this, but i gave up quickly, nothing seems to help here. One friend told me this site so i decided to give it a try. If you have any ideas about how to solve this, please reply, you can use pseudo code or c++ whatever. Thank you very much.

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  • structuremap configuration change based on settings in app.config

    - by user74825
    I am using structuremap in my project. To inject different implementation of a repository, I want to have a switch in app.config which changes all real implementation of a repository to a mock repositories. Lets say IRepository has two implementations RealRepository and MockRepository ForRequestedType() .TheDefaultIsConcreteType(); I want to have a switch in app.config / web.config say (Mock=1), which changes all real repositories implementation to ForRequestedType() .TheDefaultIsConcreteType(); I don't want to write whole plugin definition in app.config, just want one switch, how do I implement this?

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  • .NET CF -- Set Form height based on InputPanel state

    - by user354941
    Hi, So, I've got a C# project for Windows Mobile phones and I'm trying to work with the InputPanel. Specifically, I've got one form with a stack of Labels and TextBoxes that collect user input. I have an InputPanel that alerts me when the user opens the SIP. Everything works fine so far. When I get messages that the SIP status has changed, I want to change the height of the Form, which doesn't seem possible. Here's my event handler for my InputPanel: void m_InputPanel_EnabledChanged(object sender, EventArgs e) { // :( this assignment operation doesn't work and it doesn't this.ClientSize = inputPanel1.VisibleDesktop.Size; // doesn't work this.Size = inputPanel1.VisibleDesktop.Size; // assignment operation works, but isn't very useful this.visibleHeight = inputPanel1.VisibleDesktop.Height; this.InitializeUI(); } When I say that the assignment operation doesn't work, I mean that the values don't change in the debugger. I can understand that maybe I can't change the size of a Form, but I can't understand why trying to change it wouldn't throw an exception, or give a compiler error. I have my Form WindowState set to Normal instead of Maximized, but it doesn't make a difference. Also, I have read http://www.christec.co.nz/blog/archives/42 this page that tells me how I'm supposed to do this, but I can't easily put all of my controls in a Panel because I'm using a bunch of custom stuff to do alpha background controls.

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  • Outlook style events calendar for project based on MVC framework

    - by Roman
    I need large Calendar (not jQuery datepicker) with possibility to schedule events and show them on calendar. Calendar must support month/week/day views. It is very desirable for Calendar not to reload whole page when view changes (AJAX refresh). It must be easily customizable (CSS themes) and localizable. It should support drag & drop (for scheduled events). Such Calendar must be rendered on client side from JSON data snippet. I know there are too many requirements to find Calendar that matches them all but all they are important. I have found some free open source Calendar controls, but almost all are tightly tuned for ASP.NET but not MVC or have very "heavy" JavaScript codebase. Ideally i see it as jQuery extension but not server side ASP.NET control. The best ready-to-use solution I have found is FullCalendar by Adam Shaw (http://arshaw.com/fullcalendar/). It is jQuery plugin which source code I can change to fit my needs. If you can suggest some better existing solutions I'll be very appreciative.

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  • Consistent newlines in FTP mode for text files?

    - by Kristopher Ives
    I use Linux for hosting and editing code, but there are others at work that are using Windows. Sometimes they make the files have \r\n in them, and it's causing problems with version control. Should they be using the ASCII mode in their FTP manager? Should that force the line endings to be \n when uploading from Windows to Linux?

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  • Does Java Spring 3.0 MVC support annotation/attribute based client side validation like Asp.net MVC

    - by Athens
    In Asp.Net MVC 2.0, at least in the beta, you could decoration your model classes with data annotation attributes and enable client side validation that leverages that criteria defined in your model data annotation attibutes. Is there anything similar for Java Spring MVC 3.0? Is it possible to inject a component into the response pipeline that can inspect the model's annotated properties and render client side validation logic to complement the server side validation logic that is invoked prior to the controller handling the request?

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  • Find elements based on xsd type with lxml

    - by joet3ch
    I am trying to get a list of elements with a specific xsd type with lxml 2.x and I can't figure out how to traverse the xsd for specific types. Example of schema: <xsd:element name="ServerOwner" type="srvrs:string90" minOccurs="0"> <xsd:element name="HostName" type="srvrs:string35" minOccurs="0"> Example xml data: <srvrs:ServerOwner>John Doe</srvrs:ServerOwner> <srvrs:HostName>box01.example.com</srvrs:HostName> The ideal function would look like: elements = getElems(xml_doc, 'string90') def getElems(xml_doc, xsd_type): ** xpath or something to find the elements and build a dict return elements

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  • Optimizing a large iteration of PHP objects (EAV-based)

    - by Aron Rotteveel
    I am currently working on a project that utilizes the EAV model. This turns out to work quite well, but like many others I am now stumbling upon some performance issues. The data set in this particular case consists of aproximately 2500 entities, each with aprox. 150 attributes. Each entity and each attribute is represented by a PHP-object. Since most parts of the application only iterate through a filtered set of entities, we have not had very large issues yet. Now, however, I am working on an algorithm that requires iteration over the entire dataset, which causes a major impact on performance. This information is perhaps not very much to work with, but since this is an architectural problem, I am hoping for a architectural pattern to help me on the way as well. Each entity, including it's attributes takes up aprox. 500KB of memory.

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  • How to get use text columns in a trigger

    - by Jeremy
    I am trying to use an update trigger in sql 2000 so that when an update occurs, I insert a row into a history table, so I retain all history on a table: CREATE Trigger trUpdate_MyTable ON MyTable FOR UPDATE AS INSERT INTO [MyTableHistory] ( [AuditType] ,[MyTable_ID] ,[Inserted] ,[LastUpdated] ,[LastUpdatedBy] ,[Vendor_ID] ,[FromLocation] ,[FromUnit] ,[FromAddress] ,[FromCity] ,[FromProvince] ,[FromContactNumber] ,[Comment]) SELECT [AuditType] = 'U', D.* FROM deleted D JOIN inserted I ON I.[ID] = D.[ID] GO Of course, I get an error "Cannot use text, ntext, or image columns in the 'inserted' and 'deleted' tables." I tried joining to MyTable instead of deleted, but because the insert triger fires after the insert, it ends up inserting the new record into the history table, when I want the original record. How can I do this and still use text columns?

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  • Generate canonical / real URL based on base.href or location

    - by blueyed
    Is there a method/function to get the canonical / transformed URL, respecting any base.href setting of the page? I can get the base URL via (in jQuery) using $("base").attr("href") and I could use string methods to parse the URL meant to being made relative to this, but $("base").attr("href") has no host, path etc attributes (like window.location has) manually putting this together is rather tedious E.g., given a base.href of "http://example.com/foo/" and a relative URL "/bar.js", the result should be: "http://example.com/bar.js" If base.href is not present, the URL should be made relative to window.location. This should handle non-existing base.href (using location as base in this case). Is there a standard method available for this already? (I'm looking for this, since jQuery.getScript fails when using a relative URL like "/foo.js" and BASE tag is being used (FF3.6 makes an OPTIONS request, and nginx cannot handle this). When using the full URL (base.href.host + "/foo.js", it works).)

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  • SqlCommand() ExecuteNonQuery() truncates command text.

    - by H. Abraham Chavez
    I'm building a custom db deployment utility, I need to read text files containing sql scripts and execute them against the database. Pretty easy stuff, so far so good. However I've encountered a snag, the contents of the file are read successfully and entirely, but once passed into the SqlCommand and then executed with SqlCommand.ExecuteNonQuery only part of the script is executed. I fired up Profiler and confirmed that my code is not passing all of the script. private void ExecuteScript(string cmd, SqlConnection sqlConn, SqlTransaction trans) { SqlCommand sqlCmd = new SqlCommand(cmd, sqlConn, trans); sqlCmd.CommandType = CommandType.Text; sqlCmd.CommandTimeout = 9000000; // for testing sqlCmd.ExecuteNonQuery(); } // I call it like this, readDMLScript contains 543 lines of T-SQL string readDMLScript = ReadFile(dmlFile); ExecuteScript(readDMLScript, sqlConn, trans);

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