Apache性能分析

来源：作者：jannock_baby 出处：巧巧读书 2007-10-31 进入讨论组

有关Apache的性能分析

分析对象
适用于UNIX系统的Apache1.3

分析内容
Apache服务器的运行流程以及有可能进行的优化

分析的目标
记录Apache运行过程中各个部分消耗的时间记录，提出优化的方案

开始部分：
由于没有什么可以具体借鉴的文档，我们从分析Apache的运行流程入手，一下内容是我从网上查到的有关Apache运行记录（被请求的对象是一个6k左右的静态网页）：

accept(15, {sin_family=AF_INET, sin_port=htons(22283),
 sin_addr=inet_addr("127.0.0.1")}, [16]) = 3 

flock(18, LOCK_UN) = 0
sigaction(SIGUSR1, {SIG_IGN}, {0x8059954, [], SA_INTERRUPT}) = 0
getsockname(3, {sin_family=AF_INET, sin_port=htons(8080), sin_addr=inet_addr("127.0.0.1")},
 [16]) = 0
setsockopt(3, IPPROTO_TCP1, [1], 4) = 0
read(3, "GET /6k HTTP/1.0\r\nUser-Agent: "..., 4096) = 60
sigaction(SIGUSR1, {SIG_IGN}, {SIG_IGN}) = 0
time(NULL) = 873959960
gettimeofday({873959960, 404935}, NULL) = 0
stat("/home/dgaudet/ap/apachen/htdocs/6k", {st_mode=S_IFREG|0644, st_size=6144, ...}) = 0
open("/home/dgaudet/ap/apachen/htdocs/6k", O_RDONLY) = 4
mmap(0, 6144, PROT_READ, MAP_PRIVATE, 4, 0) = 0x400ee000
writev(3, [{"HTTP/1.1 200 OK\r\nDate: Thu, 11"..., 245},
 {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 6144}], 2) = 6389
close(4) = 0
time(NULL) = 873959960
write(17, "127.0.0.1 - - [10/Sep/1997:23:39"..., 71) = 71
gettimeofday({873959960, 417742}, NULL) = 0
times({tms_utime=5, tms_stime=0, tms_cutime=0, tms_cstime=0}) = 446747
shutdown(3, 1 /* send */) = 0
oldselect(4, [3], NULL, [3], {2, 0}) = 1 (in [3], left {2, 0})
read(3, "", 2048) = 0
close(3) = 0
sigaction(SIGUSR1, {0x8059954, [], SA_INTERRUPT}, {SIG_IGN}) = 0
munmap(0x400ee000, 6144) = 0
flock(18, LOCK_EX) = 0

打开： http://www.qqread.com/network/server/n372449.html