RE: APR & Tomcat...
> From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: APR & Tomcat... > > > Was that vs BIO or NIO? As I recall, there is no sendFile > > capability in BIO, so both NIO and APR should beat that. > > BIO = JIO, right? Too many TLAs. The Tomcat doc refers to the original implementation as BIO, not JIO. Using JIO is ambiguous, since both BIO and JIO are pure Java. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
Re: APR & Tomcat...
Do not worry my friends did not believe me till I sent the before/after logs even then they argued about physics and the speed of light :-) Where is Einstein when you need him? -Tony - Original Message From: Christopher Schultz To: Tomcat Users List Sent: Tue, July 20, 2010 11:53:40 AM Subject: Re: APR & Tomcat... -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tony, On 7/20/2010 12:35 AM, Tony Anecito wrote: > Interesting. I saw that when a static file was around 21K or below a dramatic > improvement in recorded time in the log for APR. I have not tried with > regular > Apache Web Server to see what I get. I should get off my ass and publish my benchmarking results. These Tomcat knuckleheads keep releasing new versions, and I feel like I should repeat my tests with the latest version. :( Soon. Maybe. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxF4qQACgkQ9CaO5/Lv0PCaEgCfePU71YPyDFCPi8dhXyQa+WWZ haIAn3x04yVH94WKjRyRvaAlFis3C+QV =E0HG -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tony, On 7/20/2010 12:35 AM, Tony Anecito wrote: > Interesting. I saw that when a static file was around 21K or below a dramatic > improvement in recorded time in the log for APR. I have not tried with > regular > Apache Web Server to see what I get. I should get off my ass and publish my benchmarking results. These Tomcat knuckleheads keep releasing new versions, and I feel like I should repeat my tests with the latest version. :( Soon. Maybe. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxF4qQACgkQ9CaO5/Lv0PCaEgCfePU71YPyDFCPi8dhXyQa+WWZ haIAn3x04yVH94WKjRyRvaAlFis3C+QV =E0HG -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chuck, On 7/19/2010 11:50 PM, Caldarale, Charles R wrote: >> From: Christopher Schultz [mailto:ch...@christopherschultz.net] >> Subject: Re: APR & Tomcat... >> >> My tests show that use of sendFile is dramatically faster >> than without. > > Was that vs BIO or NIO? As I recall, there is no sendFile capability in BIO, > so both NIO and APR should beat that. BIO = JIO, right? Too many TLAs. The NIO and APR connectors support sendFile, but the blocking, vanilla Java connector does not. sendFile, in both the NIO and APR connectors, gives a significant performance improvement. So, you're right, it's not APR's magic, but the magic of sendFile in either case. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxF4mYACgkQ9CaO5/Lv0PDnAQCggQqYH8rZ4MgWs96fAaoI0KXW NPsAoLkQepKjXBNJ4RdzYnGjt5m8Eh/j =rEM7 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
The red x is the standard way in an html page to indicate something is wrong but no 404 or other status code is displayed otherwise I would have mentioned it. Simple google indicated many reasons why it might occur. As I mentioned in another email I plan to switch back to Apache Web Server and there recently has been very good explantions on this email group why to do so. As I mentioned I used APR for performance which it did a good job for me but other considerations come into play at this point so no need to drag up old emails from the Apache group regarding APR. Regards, -Tony - Original Message From: Pid To: Tomcat Users List Sent: Tue, July 20, 2010 10:11:39 AM Subject: Re: APR & Tomcat... On 19/07/2010 22:21, Tony Anecito wrote: > Hi Pid > > First off I get a little red x in the upper left hand corner of the web page. Excellent technical description of the problem. Is it the response status 404 or a 500, I wonder? > Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish > fixing the problem but silly me I like to understand an issue before I upgrade. I didn't say it would, but silly me I like to advise people to stay current, to gain the benefit of bug and security fixes. > APR==httpd at least that is what the Apache Web site says and the acronym I > put > > up on the title page is about. The Apache Web server group disavow any >knowledge > > of APR since they say the Tomcat Group developed to to replace Apache Web > Server. It's been explained elsewhere in the thread that this is incorrect, but I'm curious to know where you read that the HTTPD 'group' disavowed APR? > What little info I could find seems to indicate APR uses the ROOT directory > under Webapps for html based apps. > > I will probably go back to Apache Web server as a separate tier. I was trying >to > > get better performance using APR + Tomcat and saw some but not enough to >justify > > the advantages of a seperate tier. I can't seem to see whether your original problem has actually been resolved or not, did you manage to determine what was happening or not? p > Best Regards, > -Tony > > > > ----- Original Message > From: Pid > To: Tomcat Users List > Sent: Mon, July 19, 2010 3:05:41 PM > Subject: Re: APR & Tomcat... > > On 19/07/2010 19:44, Tony Anecito wrote: >> Hi All, >> >> I have been having odd issues with APR & Tomcat (6.0.20) since I set it up a >> while ago. I am seeing: > > Time for an upgrade. > >> 1. Sometimes on the first try to get images from a page where the images are >> assigned a sub domain via a host tag I get a red x. Hitting refresh seems to >> retrieve the images. The images are in a subfolder off of the ROOT folder of >> tomcat. > > Can you reproduce the problem? > > What does the client actually see? > > You can use a browser tool to find out, e.g. Firebug in Firefox. > Fiddler, ieHttpHeaders in IE, the built-in developer tools in Safari/Chrome. > > What does the server actually send? You didn't state your OS (tsk) but > there are tools available for most OS which will allow you to monitor > network traffic at the server. (e.g. Wireshark). > >> 2. I get a file not found off of another folder where the file is a jnlp file. >> >> >> So is there any type of directory tag (allow, deny ect) I should be using >> for >> the sub folders off or ROOT? When I used Apache Web server I set those up >> but >> then I was not using a Host tag either. But for APR I did not set up any >> type >> directory tags. > > No there isn't. Tomcat != Apache HTTPD. > > Security permissions are set in the "ROOT/WEB-INF/web.xml", as per the > Servlet Spec. > > > p > >> If I need the directory tags where would I put them? >> >> Thanks, >> -Tony >> >> >> >> >> - >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
On 19/07/2010 22:21, Tony Anecito wrote: > Hi Pid > > First off I get a little red x in the upper left hand corner of the web page. Excellent technical description of the problem. Is it the response status 404 or a 500, I wonder? > Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish > fixing the problem but silly me I like to understand an issue before I > upgrade. I didn't say it would, but silly me I like to advise people to stay current, to gain the benefit of bug and security fixes. > APR==httpd at least that is what the Apache Web site says and the acronym I > put > up on the title page is about. The Apache Web server group disavow any > knowledge > of APR since they say the Tomcat Group developed to to replace Apache Web > Server. It's been explained elsewhere in the thread that this is incorrect, but I'm curious to know where you read that the HTTPD 'group' disavowed APR? > What little info I could find seems to indicate APR uses the ROOT directory > under Webapps for html based apps. > > I will probably go back to Apache Web server as a separate tier. I was trying > to > get better performance using APR + Tomcat and saw some but not enough to > justify > the advantages of a seperate tier. I can't seem to see whether your original problem has actually been resolved or not, did you manage to determine what was happening or not? p > Best Regards, > -Tony > > > > - Original Message > From: Pid > To: Tomcat Users List > Sent: Mon, July 19, 2010 3:05:41 PM > Subject: Re: APR & Tomcat... > > On 19/07/2010 19:44, Tony Anecito wrote: >> Hi All, >> >> I have been having odd issues with APR & Tomcat (6.0.20) since I set it up a >> while ago. I am seeing: > > Time for an upgrade. > >> 1. Sometimes on the first try to get images from a page where the images are >> assigned a sub domain via a host tag I get a red x. Hitting refresh seems to >> retrieve the images. The images are in a subfolder off of the ROOT folder of >> tomcat. > > Can you reproduce the problem? > > What does the client actually see? > > You can use a browser tool to find out, e.g. Firebug in Firefox. > Fiddler, ieHttpHeaders in IE, the built-in developer tools in Safari/Chrome. > > What does the server actually send? You didn't state your OS (tsk) but > there are tools available for most OS which will allow you to monitor > network traffic at the server. (e.g. Wireshark). > >> 2. I get a file not found off of another folder where the file is a jnlp >> file. >> >> >> So is there any type of directory tag (allow, deny ect) I should be using >> for >> the sub folders off or ROOT? When I used Apache Web server I set those up >> but >> then I was not using a Host tag either. But for APR I did not set up any >> type >> directory tags. > > No there isn't. Tomcat != Apache HTTPD. > > Security permissions are set in the "ROOT/WEB-INF/web.xml", as per the > Servlet Spec. > > > p > >> If I need the directory tags where would I put them? >> >> Thanks, >> -Tony >> >> >> >> >> - >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> > > > signature.asc Description: OpenPGP digital signature
Re: APR & Tomcat...
Christopher Schultz wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dale, On 7/19/2010 7:42 PM, Dale Ogilvie wrote: Reasons to use httpd being what? Here are a few ideas: 1. Load balancing 2. Use of mixed Java and non-Java webapps (PHP, Perl, etc.) 3. Use of multiple Tomcat instances behind a single web server If I thought about it, I could come up with a few more. 4. Imperative/beneficial use of one of the multiple Apache built-in or add-on modules which exist for Apache, and where comparable ready-made Tomcat valves, filters, applications do not (yet) exist or are not as mature. (ref : http://httpd.apache.org/docs/2.2/mod/) 5. Situations where running java webapps under a servlet engine is not the main focus/purpose/interest of a website, but things like 2. above are. I'll enclose in that the situations where the main area of competence of the people developing or managing the website is not Java. To round this off, I'd say that the "right" tool for a job does not depend only on the intrinsic qualities of the tool itself. It also depends on many other local circumstances, of which the availability of people with the appropriate competences is probably the most important. From a relative outsider's point of view, I would compare Apache httpd and Tomcat as follows : To achieve anything other than relatively trivial with Tomcat, at some point you'll need to become very competent with Java. Being competent with Java is a lifetime occupation, not because of the language itself, but because achieving anything worthwhile with it requires learning about many, many class libraries and their API's. (Anyone challenging the above ?) In comparison Apache httpd has, built-in, many features that just require configuration, and already has many ready-to-use add-on modules which just require to be plugged-in and configured, without having to do any programming at all. This may suit "sysadmins types" better than "developer types". In both cases, some knowledge of the HTTP protocol is a must, and a good knowledge of HTTP is a tremendous help. To achieve a certain goal, if you have a choice, choose whatever you are more comfortable with. Technically, I think that Christopher's earlier benchmarks showed that Tomcat can serve simple static content at least as well as Apache httpd. Using Apache httpd as a front-end to Tomcat introduces some overhead, but with a correct configuration this overhead will be insignificant in most real-world situations, compared to what can be achieved (in terms of unnecessary overhead) by bad coding in the applications themselves, whether they are running under Tomcat or under Apache. To connect Apache with Tomcat, you can use either mod_jk or mod_proxy_ajp (or just mod_proxy_http). Again, each one has its advantages and inconvenients, and you should mainly choose whichever you feel more comfortable with. The difference in performance between these solutions will likely be insignificant, compared to the mistakes in configuration and in the applications. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
Interesting. I saw that when a static file was around 21K or below a dramatic improvement in recorded time in the log for APR. I have not tried with regular Apache Web Server to see what I get. Regards, -Tony - Original Message From: "Caldarale, Charles R" To: Tomcat Users List Sent: Mon, July 19, 2010 9:50:59 PM Subject: RE: APR & Tomcat... > From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: APR & Tomcat... > > My tests show that use of sendFile is dramatically faster > than without. Was that vs BIO or NIO? As I recall, there is no sendFile capability in BIO, so both NIO and APR should beat that. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
> From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: APR & Tomcat... > > My tests show that use of sendFile is dramatically faster > than without. Was that vs BIO or NIO? As I recall, there is no sendFile capability in BIO, so both NIO and APR should beat that. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dale, On 7/19/2010 7:42 PM, Dale Ogilvie wrote: > Reasons to use httpd being what? Here are a few ideas: 1. Load balancing 2. Use of mixed Java and non-Java webapps (PHP, Perl, etc.) 3. Use of multiple Tomcat instances behind a single web server If I thought about it, I could come up with a few more. > We historically have used httpd and > mod_proxy_ajp, but less being more I'm considering a tomcat only setup. Tomcat-only is a great setup when you have a non-complicated environment. If you can do it, I'd say "go for it". Fewer attack vectors, fewer packages to keep up-to-date, etc. Just remember to use APR+sendFile ;) Or even NIO+sendFile. > The reason we used httpd in the past was "httpd serves static content > better". That reason is no longer valid with a proper configuration. > One other reason that comes to mind is httpd url rewrite support, > assuming tomcat can't help in this area. Any others? tuckey's urlrewrite, though mod_rewrite is much more chainsawy than urlrewrite. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxFGwIACgkQ9CaO5/Lv0PAtCgCfQhy1SRwitWFe/YIcPYLLhp/G l3EAn1Xl0vj98K8+uLCR/XBN5W5fGs7Q =+w6j -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chuck, On 7/19/2010 9:57 PM, Caldarale, Charles R wrote: >> From: Tony Anecito [mailto:adanec...@yahoo.com] >> Subject: Re: APR & Tomcat... >> >> So as to say the Tomcat group did not want to compete >> why build the APR? > > Tomcat people did not create it - APR has been around for years. > It's part of many products (e.g., subversion). > > What the Tomcat group did was provide a JNI interface to APR to allow > its use with Tomcat directly, primarily because OpenSSL is much > faster than the pure Java SSE equivalent. APR provides no > significant benefits for unencrypted content. My tests show that use of sendFile is dramatically faster than without. I did not benchmark SSL. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxFGgYACgkQ9CaO5/Lv0PCMCQCgt4f7Banncs4EqYkSE23Uk7CA k58An1LIVEB4vtipQpkLdkvIfjuzi50y =1ya/ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
> From: Tony Anecito [mailto:adanec...@yahoo.com] > Subject: Re: APR & Tomcat... > > The disadvantages are such as when Tomcat is taken down > so does your static content. So why are you taking Tomcat down? "Doctor, doctor, it hurts when I do this!" > I am guessing better security for Apache Web Server > versus APR You're right - you're guessing. There's no evidence to support that conjecture. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
> From: Dale Ogilvie [mailto:dale.ogil...@trimble.co.nz] > Subject: RE: APR & Tomcat... > > Reasons to use httpd being what? Serving PHP and as a poor man's load balancer, for starters. > The reason we used httpd in the past was "httpd serves > static content better". Which hasn't been true for some years. > One other reason that comes to mind is httpd url rewrite support, The equivalent for Tomcat is here: http://www.tuckey.org/urlrewrite/ > /still hoping my tomcat download license doesn't get > revoked before tomcat 7 is released/ Too late: Tomcat 7 has been released - albeit still beta. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
> From: Tony Anecito [mailto:adanec...@yahoo.com] > Subject: Re: APR & Tomcat... > > So as to say the Tomcat group did not want to compete > why build the APR? Tomcat people did not create it - APR has been around for years. It's part of many products (e.g., subversion). What the Tomcat group did was provide a JNI interface to APR to allow its use with Tomcat directly, primarily because OpenSSL is much faster than the pure Java SSE equivalent. APR provides no significant benefits for unencrypted content. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
Next experiment can be Varnish in front of Tomcat with APR :) I'm having a lot of fun with it with mostly stateless apps and to optimize some test projects, but haven't had an opportunity to deploy it in any large configuration. It provides a lot of great features and can really be used to tune the heck out of static and semi-static content! -- Richard Maynard -Original Message- From: Tony Anecito [mailto:adanec...@yahoo.com] Sent: Monday, July 19, 2010 7:42 PM To: Tomcat Users List Subject: Re: APR & Tomcat... I used APR for performance reasons. I was running Apache Web Server and Tomcat on the same physical windows server. I mentioned what configuration might be faster and was told APR native with Tomcat and it was faster. I might have gone from 1.5 to 1.0 milliseconds for JAXWS requests. The disadvantages are such as when Tomcat is taken down so does your static content. Apache Web Server is probably updated more frequently than APR Native. I am guessing better security for Apache Web Server versus APR and probably more that the Tomcat and Apache Web Server teams can agree upon such as load balancing. So APR Native was an experiment for me not a final solution. Time to go back to reality. Thanks, -Tony - Original Message From: Dale Ogilvie To: Tomcat Users List Sent: Mon, July 19, 2010 5:42:39 PM Subject: RE: APR & Tomcat... Reasons to use httpd being what? We historically have used httpd and mod_proxy_ajp, but less being more I'm considering a tomcat only setup. The reason we used httpd in the past was "httpd serves static content better". One other reason that comes to mind is httpd url rewrite support, assuming tomcat can't help in this area. Any others? Dale /still hoping my tomcat download license doesn't get revoked before tomcat 7 is released/ -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, 20 July 2010 9:51 a.m. To: Tomcat Users List Subject: Re: APR & Tomcat... There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org Confidentiality Notice: This e-mail message (including any attached or embedded documents) is intended for the exclusive and confidential use of the individual or entity to which this message is addressed, and unless otherwise expressly indicated, is confidential and privileged information of Rackspace. Any dissemination, distribution or copying of the enclosed material is prohibited. If you receive this transmission in error, please notify us immediately by e-mail at ab...@rackspace.com, and delete the original message. Your cooperation is appreciated. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
I used APR for performance reasons. I was running Apache Web Server and Tomcat on the same physical windows server. I mentioned what configuration might be faster and was told APR native with Tomcat and it was faster. I might have gone from 1.5 to 1.0 milliseconds for JAXWS requests. The disadvantages are such as when Tomcat is taken down so does your static content. Apache Web Server is probably updated more frequently than APR Native. I am guessing better security for Apache Web Server versus APR and probably more that the Tomcat and Apache Web Server teams can agree upon such as load balancing. So APR Native was an experiment for me not a final solution. Time to go back to reality. Thanks, -Tony - Original Message From: Dale Ogilvie To: Tomcat Users List Sent: Mon, July 19, 2010 5:42:39 PM Subject: RE: APR & Tomcat... Reasons to use httpd being what? We historically have used httpd and mod_proxy_ajp, but less being more I'm considering a tomcat only setup. The reason we used httpd in the past was "httpd serves static content better". One other reason that comes to mind is httpd url rewrite support, assuming tomcat can't help in this area. Any others? Dale /still hoping my tomcat download license doesn't get revoked before tomcat 7 is released/ -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, 20 July 2010 9:51 a.m. To: Tomcat Users List Subject: Re: APR & Tomcat... There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: APR & Tomcat...
Reasons to use httpd being what? We historically have used httpd and mod_proxy_ajp, but less being more I'm considering a tomcat only setup. The reason we used httpd in the past was "httpd serves static content better". One other reason that comes to mind is httpd url rewrite support, assuming tomcat can't help in this area. Any others? Dale /still hoping my tomcat download license doesn't get revoked before tomcat 7 is released/ -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, 20 July 2010 9:51 a.m. To: Tomcat Users List Subject: Re: APR & Tomcat... There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
For each image I would get a small red x. When I hit refresh and it then display them. Comments like this on Confluence web site for example explain: After a bit of Googling came across this: "Apache Portable Runtime to provide superior scalability, performance" for Tomcat 6. There are comments that when using the APR Tomcat will server static content on par with Apache (httpd) server speeds - though I haven't been able to personally verify this just yet. Or from the Tomcat site itself http://tomcat.apache.org/tomcat-5.5-doc/apr.html: Tomcat can use the Apache Portable Runtime to provide superior scalability, performance, and better integration with native server technologies. The Apache Portable Runtime is a highly portable library that is at the heart of Apache HTTP Server 2.x. APR has many uses, including access to advanced IO functionality (such as sendfile, epoll and OpenSSL), OS level functionality (random number generation, system status, etc), and native process handling (shared memory, NT pipes and Unix sockets). >These features allows making Tomcat a general purpose webserver, will enable >much better integration with other native web technologies, and overall make >Java much more viable as a full fledged webserver platform rather than simply >a >backend focused technology. > So as to say the Tomcat group did not want to compete why build the APR? In either case it does not matter for me but I do appreciate the feedback. Regards, -Tony - Original Message From: Christopher Schultz To: Tomcat Users List Sent: Mon, July 19, 2010 3:51:28 PM Subject: Re: APR & Tomcat... -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tony, On 7/19/2010 5:21 PM, Tony Anecito wrote: > First off I get a little red x in the upper left hand corner of the web page. For the whole page? I thought this was an image problem. > Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish > fixing the problem but silly me I like to understand an issue before I upgrade. Upgrading is a good idea, but is unlikely to magically fix everything. I'm unaware of any huge bugs in Tomcat 6.0.20 like "web server doesn't work at all". > APR==httpd at least that is what the Apache Web site says and the acronym I > put > > up on the title page is about. The Apache Web server group disavow any >knowledge > > of APR since they say the Tomcat Group developed to to replace Apache Web > Server. APR != httpd The "Tomcat Group" neither developed APR nor did they do it to undercut anything the httpd group is doing. On the contrary, libapr is a project to help many other projects, including httpd itself. http://apr.apache.org/ http://apr.apache.org/projects.html http://en.wikipedia.org/wiki/Apache_Portable_Runtime > What little info I could find seems to indicate APR uses the ROOT directory > under Webapps for html based apps. APR does nothing of the sort. APR essentially provides two major capabilities to Tomcat: 1. SSL services using OpenSSL library instead of Java-based SSL 2. "Sendfile" services to serve static content directly from disk-to-socket with minimal overhead Both of these features are configured on a in Tomcat and will work with any webapp deployed into the container. It has nothing to do with ROOT or any other specific webapp. > I will probably go back to Apache Web server as a separate tier. I was trying >to > > get better performance using APR + Tomcat and saw some but not enough to >justify > > the advantages of a seperate tier. Apache httpd + Tomcat will always be slower than simply using Tomcat + APR/sendfile because of the overhead involved in forwarding the requests back and forth. The only exception might be a site which is almost exclusively static content and only one or two dynamic resources. In that case, I might ask why that person was using Java in the first place ;) There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEyOAACgkQ9CaO5/Lv0PD+ngCdGoi80vMKrjB7UMP9kQKyLaS3 X/UAnjslqqAnc7796Xr14ic5cDEckPYl =vtNH -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tony, On 7/19/2010 5:21 PM, Tony Anecito wrote: > First off I get a little red x in the upper left hand corner of the web page. For the whole page? I thought this was an image problem. > Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish > fixing the problem but silly me I like to understand an issue before I > upgrade. Upgrading is a good idea, but is unlikely to magically fix everything. I'm unaware of any huge bugs in Tomcat 6.0.20 like "web server doesn't work at all". > APR==httpd at least that is what the Apache Web site says and the acronym I > put > up on the title page is about. The Apache Web server group disavow any > knowledge > of APR since they say the Tomcat Group developed to to replace Apache Web > Server. APR != httpd The "Tomcat Group" neither developed APR nor did they do it to undercut anything the httpd group is doing. On the contrary, libapr is a project to help many other projects, including httpd itself. http://apr.apache.org/ http://apr.apache.org/projects.html http://en.wikipedia.org/wiki/Apache_Portable_Runtime > What little info I could find seems to indicate APR uses the ROOT directory > under Webapps for html based apps. APR does nothing of the sort. APR essentially provides two major capabilities to Tomcat: 1. SSL services using OpenSSL library instead of Java-based SSL 2. "Sendfile" services to serve static content directly from disk-to-socket with minimal overhead Both of these features are configured on a in Tomcat and will work with any webapp deployed into the container. It has nothing to do with ROOT or any other specific webapp. > I will probably go back to Apache Web server as a separate tier. I was trying > to > get better performance using APR + Tomcat and saw some but not enough to > justify > the advantages of a seperate tier. Apache httpd + Tomcat will always be slower than simply using Tomcat + APR/sendfile because of the overhead involved in forwarding the requests back and forth. The only exception might be a site which is almost exclusively static content and only one or two dynamic resources. In that case, I might ask why that person was using Java in the first place ;) There certainly are reasons to use Apache httpd out in front of Tomcat, but performance isn't one of them. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxEyOAACgkQ9CaO5/Lv0PD+ngCdGoi80vMKrjB7UMP9kQKyLaS3 X/UAnjslqqAnc7796Xr14ic5cDEckPYl =vtNH -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
Hi Pid First off I get a little red x in the upper left hand corner of the web page. Yep I agree maybe an upgrade to the latest Tomcat and APR might accomplish fixing the problem but silly me I like to understand an issue before I upgrade. APR==httpd at least that is what the Apache Web site says and the acronym I put up on the title page is about. The Apache Web server group disavow any knowledge of APR since they say the Tomcat Group developed to to replace Apache Web Server. What little info I could find seems to indicate APR uses the ROOT directory under Webapps for html based apps. I will probably go back to Apache Web server as a separate tier. I was trying to get better performance using APR + Tomcat and saw some but not enough to justify the advantages of a seperate tier. Best Regards, -Tony - Original Message From: Pid To: Tomcat Users List Sent: Mon, July 19, 2010 3:05:41 PM Subject: Re: APR & Tomcat... On 19/07/2010 19:44, Tony Anecito wrote: > Hi All, > > I have been having odd issues with APR & Tomcat (6.0.20) since I set it up a > while ago. I am seeing: Time for an upgrade. > 1. Sometimes on the first try to get images from a page where the images are > assigned a sub domain via a host tag I get a red x. Hitting refresh seems to > retrieve the images. The images are in a subfolder off of the ROOT folder of > tomcat. Can you reproduce the problem? What does the client actually see? You can use a browser tool to find out, e.g. Firebug in Firefox. Fiddler, ieHttpHeaders in IE, the built-in developer tools in Safari/Chrome. What does the server actually send? You didn't state your OS (tsk) but there are tools available for most OS which will allow you to monitor network traffic at the server. (e.g. Wireshark). > 2. I get a file not found off of another folder where the file is a jnlp file. > > > So is there any type of directory tag (allow, deny ect) I should be using for > the sub folders off or ROOT? When I used Apache Web server I set those up but > then I was not using a Host tag either. But for APR I did not set up any type > directory tags. No there isn't. Tomcat != Apache HTTPD. Security permissions are set in the "ROOT/WEB-INF/web.xml", as per the Servlet Spec. p > If I need the directory tags where would I put them? > > Thanks, > -Tony > > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: APR & Tomcat...
On 19/07/2010 19:44, Tony Anecito wrote: > Hi All, > > I have been having odd issues with APR & Tomcat (6.0.20) since I set it up a > while ago. I am seeing: Time for an upgrade. > 1. Sometimes on the first try to get images from a page where the images are > assigned a sub domain via a host tag I get a red x. Hitting refresh seems to > retrieve the images. The images are in a subfolder off of the ROOT folder of > tomcat. Can you reproduce the problem? What does the client actually see? You can use a browser tool to find out, e.g. Firebug in Firefox. Fiddler, ieHttpHeaders in IE, the built-in developer tools in Safari/Chrome. What does the server actually send? You didn't state your OS (tsk) but there are tools available for most OS which will allow you to monitor network traffic at the server. (e.g. Wireshark). > 2. I get a file not found off of another folder where the file is a jnlp file. > > > So is there any type of directory tag (allow, deny ect) I should be using for > the sub folders off or ROOT? When I used Apache Web server I set those up but > then I was not using a Host tag either. But for APR I did not set up any type > directory tags. No there isn't. Tomcat != Apache HTTPD. Security permissions are set in the "ROOT/WEB-INF/web.xml", as per the Servlet Spec. p > If I need the directory tags where would I put them? > > Thanks, > -Tony > > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > signature.asc Description: OpenPGP digital signature
