php进程LD_库_路径cpu使用量大

我正在寻找PHP进程使用如此多CPU的原因，服务器是Apache mpm worker+suphp 下面是“strace php”的一些输出，如您所见，进程正在“不正确”路径中查找dso，这些只是编译的php扩展，是否有方法将搜索路径指定为“/lib64:/usr/lib64”？ 因为我发现在多次反向路径尝试后，它最终在lib64或/usr/lib64中加载了dso，这是系统CPU消耗，你知道，这么多系统调用都是徒劳的。提前谢谢

open("/opt/xslt/lib/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/tidy/lib/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/mhash/lib/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/libmcrypt/lib/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/pcre/lib/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/curlssl/lib/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/mysql/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/xml2/lib/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/pcre/lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/curlssl//lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/php_with_imap_client//lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/libmcrypt//lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/mhash//lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/tidy//lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/xslt//lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/tls/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/libselinux.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib64/libselinux.so.1", O_RDONLY) = 3

open("/opt/xslt/lib/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/tidy/lib/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/mhash/lib/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/libmcrypt/lib/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/pcre/lib/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/curlssl/lib/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/mysql/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/xml2/lib/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/pcre/lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/curlssl//lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/php_with_imap_client//lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/libmcrypt//lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/mhash//lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/tidy//lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/xslt//lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/tls/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/libsepol.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib64/libsepol.so.1", O_RDONLY)  = 3
open("/opt/xslt/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/tidy/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/mhash/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/libmcrypt/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/pcre/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/curlssl/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/mysql/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/xml2/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/pcre/lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/curlssl//lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/php_with_imap_client//lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/libmcrypt//lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/mhash//lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/tidy//lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/xslt//lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/tls/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib64/libnss_files.so.2", O_RDONLY) = 3

我的意见正确吗？或者是以下原因导致了大量CPU使用

lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/index.php", {st_mode=S_IFREG|0644, st_size=1971, ...}) = 0
access("/home/socialth/public_html/components/com_content/router.php", F_OK) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/index.php", {st_mode=S_IFREG|0644, st_size=1971, ...}) = 0
access("/home/socialth/public_html/components/com_content/router.php", F_OK) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/index.php", {st_mode=S_IFREG|0644, st_size=1971, ...}) = 0
access("/home/socialth/public_html/components/com_content/router.php", F_OK) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/index.php", {st_mode=S_IFREG|0644, st_size=1971, ...}) = 0
access("/home/socialth/public_html/components/com_content/router.php", F_OK) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0    
stat("/home/socialth/public_html/index.php", {st_mode=S_IFREG|0644, st_size=1971, ...}) = 0
access("/home/socialth/public_html/components/com_content/router.php", F_OK) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0
stat("/home/socialth/public_html/index.php", {st_mode=S_IFREG|0644, st_size=1971, ...}) = 0
access("/home/socialth/public_html/components/com_content/router.php", F_OK) = 0
lstat("/home", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth", {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home/socialth/public_html/components/com_content/router.php", {st_mode=S_IFREG|0644, st_size=8157, ...}) = 0

---

您对此无能为力，尤其是因为所有这些软件包都安装在自己的小目录树中。虽然/opt是一个很好的概念，可以将整个包彼此隔离开来，但它确实意味着向系统其余部分提供共享lib的任何此类包都必须放入库搜索路径中，并且在搜索任何共享lib时，最终都会出现无意义的长open/stat调用。您所能做的唯一优化可能是重新安排路径，以便使用频率较低的库位于搜索路径的末尾，以便命中率“更快”，并且不会浪费时间检查很少使用的区域

PHP自动加载程序也是如此。由于系统在每个阶段都会检查访问权限，因此还需要指向任何特定文件的长统计链

顺便说一句，这正是不鼓励使用.htaccess文件的原因。一旦启用.htaccess，Apache就必须检查通向请求文件的每个目录是否存在.htaccess文件。如果文件存在，则必须加载/解析该文件/etc。。。所有这些都浪费了大量的cpu周期和磁盘带宽

---

.htaccess在开发/测试时是可以的，但一旦安装成功，.htaccess指令就应该传输到主服务器.conf文件中，因此它们只在服务器启动时加载/解析一次。

您想在这里做什么？我所看到的只是一堵系统调用的墙，我怀疑php进程会花费很多cpu，因为这些调用太多了