<p>　　<a href="http://php-accelerator.co.uk/">http://php-accelerator.co.uk/</a> 可以下载，是zend的强劲对手。是免费的。我已经在用啦。效果还不错。</p>修改 php.ini 加上：</p>zend_extension = /usr/local/lib/php_accelerator_1.3.3r2.so</p>phpa = on</p>phpa.tweaks = on</p>phpa.cache_dir = /tmp</p>phpa.file_perms = 400</p>phpa.cache_file_prune_period = 1h</p>phpa.cache_file_ttl = 1d</p>phpa.shm_size = 10</p>phpa.shm_key = 0xc0deb00</p>phpa.shm_perms = 666</p>phpa.shm_user = nobody</p>phpa.shm_group = nobody</p>phpa.shm_release_at_exit = on</p>phpa.shm_stats_check_period = 5m</p>phpa.shm_ttl = 12h</p>phpa.shm_max_processes = 512</p>phpa.shm_lock_threshold0 = 10</p><p>　　apachectl graceful 就能用啦。具体参数看它的文档。</p>