Re: [xwiki-users] Monitoring an Xwiki stack
(Sorry for top-posting - I'm stuck with Outlook Live :-( My system's very small - approx 20 users and very little content at present. It's for a small collaborative research group which may grew to ~100 members. I expect quite a few largish attachments and have already configured filesystem attachments. I'm using PostgreSQL for various reasons, so can't add all the suggested indexes (names the string prefix ones that are specific to MySQL), but I'd be surprised to be hitting limits so soon. The slowdown occurred soon after I opened the wiki to the other members, who probably did some exploring and perhaps triggered something painful. From: Paul Libbrecht [p...@hoplahup.net] Sent: 02 November 2014 22:21 To: XWiki Users Subject: Re: [xwiki-users] Monitoring an Xwiki stack Btw, I am not sure you could say the XWiki installs are that pesky. However, depending on the user base, it may really need quite some tuning. For example, if your xwiki manipulates complex documents the document cache may be too big for the memory, and that you only reach with some time (it could be a week or two). OutOfMemoryErrors then appear on a regular basis. Another example has been the amount of registered users. This is a bit too much on curriki to store into a page of objects, so special treatment has been applied. Yet another example would be the mass of attachments, e.g if people use this as a shared disk, where the file-system-attachments solution has helped quite many (I think). I think all wikis and CMSs that I know of are rather limited in their default goals (beyond XWiki, I have experience with Drupal and Wordpress) and special treatment maybe be quickly available, in config, install, or custom development. Monitoring tools can help you adjust this. Bryn, maybe you want to indicate how big is your system? Maybe it's just a matter of some too eager clients (e.g. some ever repeat javascript-based-requests served to tens of users every second or so)? paul ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
Re: [xwiki-users] Monitoring an Xwiki stack
My system's very small - approx 20 users and very little content at present. It's for a small collaborative research group which may grew to ~100 members. I expect quite a few largish attachments and have already configured filesystem attachments. Sounds quite reasonable. Limited memory? I'm using PostgreSQL for various reasons, so can't add all the suggested indexes (names the string prefix ones that are specific to MySQL), but I'd be surprised to be hitting limits so soon. The database difference might be something to explore. I've seen rather often that things are more battle-tested for MySQL. But I fully agree you have reasons to prefer PostgreSQL. The slowdown occurred soon after I opened the wiki to the other members, who probably did some exploring and perhaps triggered something painful. You definitely need to explore when it happens. - something such as show full processlist (that's a MySQL thing) should be available to show if there's an SQL query taking long and if others are slow (typically, big LIKE queries tend to block all writes) - invoke a thread-dump (kill -HUP or use JMX or http://extensions.xwiki.org/xwiki/bin/view/Extension/JMX+Access#HExample5:gettingafullthread-dump): the threads generally carry the path of the http requests - check memory - make sure you enable -verbose:gc as a JVM option to indicate when memory limits are reached paul ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
[xwiki-users] Question regarding AppServerTrustedAuthServiceImpl
Guys, I am new to Xwiki. I have a xwiki deployed on tomcat 6. I need to use authentication against tomcat JDBC realm. AppServerTrustedAuthServiceImpl seems to my option. Are there some detailed documents or examples for using it? Thanks inadvance. Ji Zhang Trade Informatics, LLC. ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
Re: [xwiki-users] Question regarding AppServerTrustedAuthServiceImpl
On 11/03/2014 05:15 PM, Ji Zhang wrote: Guys, I am new to Xwiki. I have a xwiki deployed on tomcat 6. I need to use authentication against tomcat JDBC realm. AppServerTrustedAuthServiceImpl seems to my option. Are there some detailed documents or examples for using it? yes: add a line do the xwiki.cfg in the WEB-INF folder, as explained here: http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Authentication#HContainerAuthentication That (and restarting tomcat) should be everything you need to do. Cheers, Clemens ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
Re: [xwiki-users] Question regarding AppServerTrustedAuthServiceImpl
Thanks Clemens. How do I test if this authentication works? For example, I have an user jsmith/password in Tomcat JDBC realm. How do I assign the viewing privileges to jsmith? Thanks again. Ji -Original Message- From: users [mailto:users-boun...@xwiki.org] On Behalf Of Clemens Klein-Robbenhaar Sent: Monday, November 03, 2014 11:42 AM To: users@xwiki.org Subject: Re: [xwiki-users] Question regarding AppServerTrustedAuthServiceImpl On 11/03/2014 05:15 PM, Ji Zhang wrote: Guys, I am new to Xwiki. I have a xwiki deployed on tomcat 6. I need to use authentication against tomcat JDBC realm. AppServerTrustedAuthServiceImpl seems to my option. Are there some detailed documents or examples for using it? yes: add a line do the xwiki.cfg in the WEB-INF folder, as explained here: http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Authentication#HContainerAuthentication That (and restarting tomcat) should be everything you need to do. Cheers, Clemens ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
Re: [xwiki-users] Monitoring an Xwiki stack
Says Paul Libbrecht: My system's very small - approx 20 users and very little content at present. It's for a small collaborative research group which may grew to ~100 members. I expect quite a few largish attachments and have already configured filesystem attachments. Sounds quite reasonable. Limited memory? Well I'm running everything off a single VM configured with 8GB RAM and 2 VCPUS. If necessary I can use more VMs but I wanted to keep things simple until I knew what my actual performance needs were. I also have access to plenty of persistent storage. I have Tomcat configured with CATALINA_OPTS=-server -Xms800m -Xmx800m -XX:MaxPermSize=196m I'm using PostgreSQL for various reasons, so can't add all the suggested indexes (names the string prefix ones that are specific to MySQL), but I'd be surprised to be hitting limits so soon. The database difference might be something to explore. I've seen rather often that things are more battle-tested for MySQL. But I fully agree you have reasons to prefer PostgreSQL. Yes, and I'd be interested to look into optimising common searches once things have grown and I understand the query workload. Alternatives to MySQL string prefix indexes would be GIN or GIST - the pg_trgm package looks promising. ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
Re: [xwiki-users] [Proposal] Statistics
Hello all, After your feedback I made this draft with QA Stats: http://dev.xwiki.org/xwiki/bin/view/Drafts/QA+Stats I await your reply and feedback regarding the draft and stats. Thank you. On Thu, Oct 2, 2014 at 3:29 PM, vinc...@massol.net vinc...@massol.net wrote: Hi Andrea, On 2 Oct 2014 at 10:01:17, Andreea Popescu (andreea.pope...@xwiki.com (mailto:andreea.pope...@xwiki.com)) wrote: Hello everyone, If you’re wondering what kept the QA team busy during the last few days, What QA team, there’s no such team/role in the XWiki project ATM :) I think yo meant the XWiki SAS QA Team. Since I’m also from XWiki SAS I can explain a bit more about this team: - it’s globally in charge of ensuring the quality of the XWiki releases from the point of view of XWiki SAS clients (for example some XWiki SAS clients are using Oracle and this team takes special care to ensure there’s no regression on Oracle, same for browser versions, and globally for anything that could impact XWiki SAS clients) - XWiki SAS is delegating Andrea full time (and Manuel 1/3rd of this time) to help the xwiki.org project by doing manual testing of XWiki releases. They are maintaining the http://test.xwiki.org wiki and filling the manual testing part of the Release notes. the answer is a lot of testing and a brainstorming effort in order to devise a series of statistics for the product, which would be featured with the product version 6.2. cool We believe that the statistics ought to be implemented for the following reasons: a) They would allow for better communication between us and the community You’re not community? :) Personally I’ve always considered you community like anyone else contributing something to the xwiki project! b) Each version would be more easily evaluated this way c) The product’s evolution would be more easily observable by tracking the changes in these statistics from one version to another d) A more complete overview on the long-term evolution of the product would be possible, with an opportunity to analyze a series of items in detail Yes what’s important are not the raw values, but the trends between versions. I started working on this here: http://dev.xwiki.org/xwiki/bin/view/Community/ProjectHealth Thomas also recently started working on performance stats here: http://test.xwiki.org/xwiki/bin/view/Performances/Jetty+HSQLDB+single+wiki See also this mail thread on the topic of having regular perf reports at each release: http://markmail.org/message/dprnorr37ox7tvfu IMO this needs to be included in the page you’re going to create for each release. See below for more on that. We consider some of the above-mentioned items to be quite important. Here is a list of the most important ones: - No. of downloads - No. of active installs - No. of tests executed / added Not very easy to compute but I know how to do it if you need help on that. - Jira issues fixed - by resolution, by priority, by type - Jira issues opened - by priority, by type - Closed vs open tickets - Stats for important tags: e.g. ie10, mobile, flamingo - Stats for major features: e.g. flamingo, extension manager, solr - Top overall issues reporters - Top non-XWiki SAS issues reporters - Extensions quality: issues reported (top 10 extensions) - Extensions quality: issues closed (top 10 extensions) - l10n translations: existent, missing - Performance stats Yes! Therefore, your opinion on the following issues would be of great use to us: a) The list offered a number of items that we deem important for our measurements and assessments. We would like to know whether you agree with the list and we would like to have your opinion regarding other items that we would consider inserting in the list? Just to stress it again, what’s important is to get the figure for the past releases and compare so that we get trends over several releases and see where we’re going. - Global TPC is also interesting to compute and see the evolution. Sorin started doing this in the past (he did it once only unfortunately ;)). I can also explain how to compute this. Now you don’t have to start with 100 metrics. Just 3-4 is enough. It’s more important to send the reports regularly and have the trends for each metrics than to have too many metrics. Also, what’s important is to analyze them. There’s no point in having the metrics and not doing anything about them. So we’ll need to think about that too but we can decide after. b) Where would you like us to publish the statistics and the conclusions that would result from their analysis? We were thinking about the following: - On a ‘Project Health’ page - On a page designated to each product version (each version would have its own page with statistics) - In the test.xwiki.org - Within a blogpost - A mix of the above Here’s my POV: 1) * I’d
Re: [xwiki-users] Question regarding AppServerTrustedAuthServiceImpl
To know if you are authenticated from XWiki point of view look at the top right corner, you should see you name or id there (so probably jsmith here). If you are not authenticated then you should have a login button/link instead. You can also enable debug log for this authenticator. Search for it in Administration - Logging and set log level to TRACE or DEBUG. When this is done you should see details on what is happening in this authenticator in your application server log. On Mon, Nov 3, 2014 at 7:10 PM, Ji Zhang jzh...@tradeinformatics.com wrote: Thanks Clemens. How do I test if this authentication works? For example, I have an user jsmith/password in Tomcat JDBC realm. How do I assign the viewing privileges to jsmith? Thanks again. Ji -Original Message- From: users [mailto:users-boun...@xwiki.org] On Behalf Of Clemens Klein-Robbenhaar Sent: Monday, November 03, 2014 11:42 AM To: users@xwiki.org Subject: Re: [xwiki-users] Question regarding AppServerTrustedAuthServiceImpl On 11/03/2014 05:15 PM, Ji Zhang wrote: Guys, I am new to Xwiki. I have a xwiki deployed on tomcat 6. I need to use authentication against tomcat JDBC realm. AppServerTrustedAuthServiceImpl seems to my option. Are there some detailed documents or examples for using it? yes: add a line do the xwiki.cfg in the WEB-INF folder, as explained here: http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Authentication#HContainerAuthentication That (and restarting tomcat) should be everything you need to do. Cheers, Clemens ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users -- Thomas Mortagne ___ users mailing list users@xwiki.org http://lists.xwiki.org/mailman/listinfo/users
