Re: Re: Apache lstat performance problem

["Vincenzo D'Amore" <v.damore@xxxxxxxxx>]

Thanks to who answered me,

the problem was definitely related to PHP, I still don't understand why PHP tries so much times to read a file but this behavior appears when PHP_ADMIN_VALUE open_basedir is defined inside <Directory /...> 

Removing such PHP_ADMIN_VALUE open_basedir setting, now I have only one:

lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

lstat("/usr/local/myspaces", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

lstat("/usr/local/myspaces/myspaces08", {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP", {st_mode=S_IFDIR|0755, st_size=13312, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa", {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al", {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall", {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace", {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps", {st_mode=S_IFDIR|0750, st_size=1024, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps/21451", {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs", {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content", {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages", {st_mode=S_IFDIR|0777, st_size=1024, ...}) = 0

lstat("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0

And immediately after the file is read:

open("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", O_RDONLY) = 416

fstat(416, {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0

open("/usr/local/myspaces/myspaces08/NSP/wa/al/wall/webspace/siteapps/21451/htdocs/wp-content/languages/zh_CN.php", O_RDONLY) = 417

fstat(417, {st_mode=S_IFREG|0777, st_size=1312, ...}) = 0

mmap(NULL, 1312, PROT_READ, MAP_SHARED, 417, 0) = 0x2b4a96443000

munmap(0x2b4a96443000, 1312)            = 0

close(417)                              = 0

read(416, "<?php\r\n// Make the admin interfa"..., 8192) = 1312

read(416, "", 8192)                     = 0

read(416, "", 8192)                     = 0

close(416)                              = 0

Regards,

Vincenzo

On Fri, Jul 9, 2010 at 11:40 AM, Vincenzo D'Amore <v.damore@xxxxxxxxx> wrote:

Hi Joost,

I suppose this is not the case, because I already see in strace output the part related to "AllowOverride set":

lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

lstat("/usr/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

lstat("/usr/local/mywebspace", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

open("/usr/local/mywebspace/.htaccess", O_RDONLY) = -1 ENOENT (No such file or directory)

lstat("/usr/local/mywebspace/mywebspace01", {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0

open("/usr/local/mywebspace/mywebspace01/.htaccess", O_RDONLY) = -1 ENOENT (No such file or directory)

lstat("/usr/local/mywebspace/mywebspace01/NSP_COL", {st_mode=S_IFDIR|0755, st_size=2048, ...}) = 0

open("/usr/local/mywebspace/mywebspace01/NSP_COL/.htaccess", O_RDONLY) = -1 ENOENT (No such file or directory)

lstat("/usr/local/mywebspace/mywebspace01/NSP_COL/da", {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0

open("/usr/local/mywebspace/mywebspace01/NSP_COL/da/.htaccess", O_RDONLY) = -1 ENOENT (No such file or directory)

lstat("/usr/local/mywebspace/mywebspace01/NSP_COL/da/am", {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0

open("/usr/local/mywebspace/mywebspace01/NSP_COL/da/am/.htaccess", O_RDONLY) = -1 ENOENT (No such file or directory)

lstat("/usr/local/mywebspace/mywebspace01/NSP_COL/da/am/damorealt", {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0

open("/usr/local/mywebspace/mywebspace01/NSP_COL/da/am/damorealt/.htaccess", O_RDONLY) = -1 ENOENT (No such file or directory)

lstat("/usr/local/mywebspace/mywebspace01/NSP_COL/da/am/damorealt/webspace", {st_mode=S_IFDIR|0755, st_size=1024, ...}) = 0

open("/usr/local/mywebspace/mywebspace01/NSP_COL/da/am/damorealt/webspace/.htaccess", O_RDONLY) = 23

I suppose this is the parte where Apache httpd check the existence of .htaccess 

On Fri, Jul 9, 2010 at 10:43 AM, Joost Heer, de <j.d.heer@xxxxxxxxxxx> wrote:

>For every file should be served by apache httpd, apache httpd tries to lstat
>all directory in path more times:

This is normally seen when you have .htaccess usage turned on (all subdirectories have to be checked for the presence of .htaccess). Do you have AllowOverride set to off?

Joost

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--
Vincenzo D'Amore
email: v.damore@xxxxxxxxx
msn: freedev@xxxxxxxxxxx
skype: free.dev
mobile: +39 349 8513251

--
Vincenzo D'Amore
email: v.damore@xxxxxxxxx
msn: freedev@xxxxxxxxxxx
skype: free.dev
mobile: +39 349 8513251