Excellent info Rick, Thank you! Darryl
-----Original Message----- From: Rick Johnson [mailto:[EMAIL PROTECTED]] Sent: Monday, December 02, 2002 5:21 PM To: [EMAIL PROTECTED] Subject: Re: Apache Help -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Delao, Darryl W wrote: | I currently have 3 web servers, each dual 2.4 xeon's with 6 gig of | ram, all load balanced. However, I am expecting anywhere from 2000 to | 4000 users on my servers at any given time within the next few weeks, | therefore I am trying to make apache more efficient. It would be nice | to make each server handle 1000 requests. Recompiling is the only way to go. I'm assuming you're running Red Hat 8.0 and using Apache 2.0.40. See bottom if you're not. I was able to do the following on my servers in order to convert: rpm -ivh httpd-2.0.40.src.rpm Then edit /usr/src/redhat/SPECS/httpd.spec. The following changes will need to be made... Change the line which says: - --with-mpm = prefork \ to - --with-mpm = worker \ - --enable-cgi \ Second line required to keep mod_cgi in the package - dunno why it's excluded by default when compiling w/ worker vs. prefork. Not including it will prevent httpd from starting as it can't find mod_cgi as specified in httpd.conf. Not including it and remarking it from your httpd.conf will remove cgi-bin functionality. Lastly, to increase the number of servers, add the DEFAULT_SERVER_LIMIT=32 statement to the beginning of the configure line by changing the following line: CFLAGS="$RPM_OPT_FLAGS" \ to CFLAGS="$RPM_OPT_FLAGS -DDEFAULT_SERVER_LIMIT=32" \ The number I chose when multiplied by the default MaxThreads of 64 will allow 2048 concurrent users. You can adjust one or the other to suit, but I'd go w/ more servers before increasing the threads beyond 64. You may also want to add "worker" to the RPM Release: line of the spec file. I made mine 8worker to get 2.0.40-8worker in order to differentiate the set of RPMs. Lastly save the spec file - I'd call it something different like httpd-worker.spec Then, rebuild your RPM's using the following command: rpmbuild -bb --target i686-redhat-linux-gnu httpd-worker.spec replacing i686 with athlon or i386 or whatever you want to compile for. For your Xeon's, I'd do i686 at minimum (you could edit the macro to match your -march but that may not prove beneficial). This will build 4 RPM's within /usr/src/redhat/RPMS/i686. Then run rpm -Uvh --force <rpm names> to install your updated version. This, combined w/ the MaxServerThreads 64 directive and MaxClients set to 2048 in your httpd.conf under the worker section will allow 2048 concurrent users. Now if you're running Red Hat 7.3 or earlier with Apache 1.3x, or desire to keep the prefork functionality, just change the - -DDEFAULT_SERVER_LIMIT=32 to 1000 or whichever you desire to be your max users. Note going w/ the worker model will use considerably less memory/resources and is highly recommended if applicable to your situation. Reference the following PDF file for more info on Improving Apache's performance (only a piece, but it's the info I needed): http://archive.devx.com/java/wrox/7221_chap08.pdf Hope this helps. Worked for me. - -Rick - -- Rick Johnson, RHCE - [EMAIL PROTECTED] Linux/WAN Administrator - Medata, Inc. PGP Public Key: https://mail.medata.com/pgp/rjohnson.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (MingW32) Comment: Signed/Encrpyted for your protection iD8DBQE96+rMIgQdhlSHZgMRAhwdAJ9/7/t3Oe0hcwC3fFeeCppo+vAFRgCeLMBf yBdqwVzAcy/0pjVPY5rSDY0= =e5KD -----END PGP SIGNATURE----- -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list
