这段apache2日志是什么意思

dato

[Fri Oct 24 12:40:42 2003] [notice] Apache/2.0.47 (Unix) configured -- resuming normal operations
[Fri Oct 24 12:41:00 2003] [error] [client 210.220.73.4] File does not exist: /dato/w3/www/checkinstall_files, referer: http://dato.minidns.net/test.htm
[Fri Oct 24 12:41:00 2003] [error] [client 210.220.73.4] File does not exist: /dato/w3/www/checkinstall_files, referer: http://dato.minidns.net/test.htm
[Fri Oct 24 12:41:01 2003] [error] [client 210.220.73.4] File does not exist: /dato/w3/www/checkinstall_files, referer: http://dato.minidns.net/test.htm

特别是这段 /dato/w3/www/checkinstall_files，我通过代理访问一次test.htm结果产生这么多的日志checkinstall_files,不知道是否跟我
用线程MPM有关，看起来严重降低系统性能