-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 We use zope with the following environment: - - Zope 2.7.4-0 - - ZCoMIX-1.0.2+ (http://sourceforge.net/projects/zcomix) - - mysqlUserFolder 1.0.0 - - python 2.3.4 - - Red Hat Enterprise Linux ES release 2.1, kernel 2.6.11, ext2 fs - - MySQL-server-4.0.20 - - Apache 2.0.50 (with HTTPS) for cache 1 Portal replicated through Zeo and balanced with DNS Round Robin. Hardware: 2 Servers HP ML350 G4 with Dual Intel Xeon 2.80GHz, 3Gb of Memory, without RAID, SCSI U320 with 4 disks 120gb. We posted a dynamic document for the students (35.000). The document is generated using queries in MySql database, after user autentication using mysqluserfolder. The python processes occupied 100% of machines resources (cpu and memory), and the load average increased quickly. We evidenced that the problems had occurred before user authentication, only trying access the initial page of the Zope portal. We estimated that the simultaneous accesses to our portal are approximately 10000 people in a moment, that finished generating a DoS (Denial of Service) in our portal. To resolve the problem momentarily, we posted static documents in PHP, without Zope. Have someone experience in sites of great traffic using Zope? If so, please give us some tip for tunning the system or discover the bootleneck points. We have doubts if what it is generating the problem is the ZCoMIX or the Zope, or even though the configuration of Apache. - -- Jeronimo Zucco LPIC-1 Linux Professional Institute Certified Núcleo de Processamento de Dados Universidade de Caxias do Sul "May the Source be with you." - An unknown jedi programmer. http://jczucco.blogspot.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFDKwphTCq0VJ4DIPwRAoCWAJ9ILkzxHiCNKd3Uq9Y8T+Gi/YmopQCgjPY/ ytXv2M1K7rZ2EgzDEbpJtVI= =8sTe -----END PGP SIGNATURE-----