if Web servers might prioritize servicing Regular GET or a Conditional GET.
I have seen busy servers take 9 seconds to respond with a (304 Not modified). On fast networks (LANs), the file size is no issue and, it seems that a (200 OK) with the object is downloaded faster than the (304 Not modified) response alone.
Wiseowl. Not so wise on this one.
how would i search for any files modified between such and such date using SSH
some one seems to have downloaded some malicious codes on to some on one of my sites and the files are infected
however i have 1000's of files and some are infected wheras some hasnt so iw ant to check what files have been modified between a date range or on a particular day
using Linux with apache
i had an p4 2.8g db server, centos4+mysql4.1. the cpu usage went up to 9X% at peak time (web pages loaded within 2~3sec), so i decide to swtich to a new server with a faster cpu. the new box is core 2 duo e6600, centos5+mysql5.0, having same RAM and HD with the old box. surprisingly , the cpu usage keeps above 150% almost all the time, and web pages cost 10+seconds to load at peak time.
how is it possible? what is the problem here? is the cpu, os, or mysql?
i try to backup a folder with many .tar files,
i use mget,the seppd is about 1MB/s,
but wget is about 5-7MB/s,
I seem to be experiencing slower bw throughput in speedtests on my server today on a domain that is on a shared ip as a virtualhost in apache 2.2.x on fedora core 6.
Right now this domain is pushing somewhere around 35Mbits out and 1Mbit in.
When I d/l from this domain I see pausing and overall performance is roughly 1/2 of what it was yesterday (400K/sec versus ~800K yesterday), when the site was only doing about 3Mbits.
However, another domain on this same server that is not on a shared IP, when I test it, I get my usual 100% d/l speed.
My server is not under heavy load, .02, .06, .00 with 95% idle cpu.
I'm just wondering, should sites with high bw use definitely have their own IP, as shared/virtual hosting is known to cause slowness?
I have a problem with time at one RHEL 4 server, it is a plain box, and from time to time the time (hours) seems to be auto modified, no one is touching the box and then from once it got modified to a few hours less than what we specified, to change time and date we always use:
Code:
date --set "2007-10-24 13:35"
hwclock --set --date="2007-10-24 13:35"
The only thing that I noted is that ntpd daemon was running, while in the rest of our plain box it is not running, maybe this is the reason the system is auto chaning the time?
I have compiled apache with below configuration
./configure --prefix=/app/apache2_4 --with-apr=/app/apache2_4/apr --with-apr-util=/app/apache2_4/apr-util --with-pcre=/app/apache2_4/pcre/ --enable-ssl --with-ssl=/usr/bin/openssl --enable-modules=all --enable-mods-shared=all --enable-proxy --enable-mime-magic --enable-rewrite --enable-speling--enable-mpms-shared
But after compilation I have added expiry,deflate headers but I am not able to see either ETAG and LAst-modified header...
if i use uk2.net's dedicated, will my US users feel slower connection?
if i host my site on uk2.net, will the site load slower for US visitors because the server is in uk ?
what about FDCservers, and serverpronto, any opinions on them ?
uk2.net appeals because of the price.
say i have lot of traffic from USA, does my site load slower if hosted in netherlands or uk?
View 11 Replies View RelatedWe have few application which serve static information to the users like excel sheet.
We used to place the .xls file in the docroot and it will be accessed using URL
for example, I'll place a file named test.xls and access it through [URL]
Problem here is if i modified the file content and accesed it through [URL] , it is showing the old content. New content is not displaying.
But the same if i did with .txt file , it showing the updated content for .txt file
Dont know why only xls files are not reflecting.
I temporarily enabled and activated Plesk firewall module (which I wish I didn't the first time) and for some reason it seems to have overwritten the default iptables configuration that was set, leaving my ftp unable to be logged into. I tried to disable the firewall module and reboot the server. It didn't work.
I also noticed that it somehow seem to have changed my hostname to my previous server hostname as well
Is there any way to completely revert back to original iptables settings before enabling the Firewall module?
We used Red Hat with ext2 as our file system on an old server with 100k+ of image files in a single directory. This seemed to preform ok until we switched to FreeBSD using UFS. Now images load very slow. I have read that Ext2 uses and internal hash to speed lookups, while UFS does linear searches for lookups.
View 2 Replies View RelatedWe have many webservers in our environment, Few webservers serves static contents. In one application, we often change the excel file. Every day or 2 days once we will modified the excel sheet content. File name will be the same, only the content will be changed. We will modify the content of the sheet and upload through FTP to the docroot. After we done this if we access the application URL, its displaying the old content. Its takes time to reflect. sometime with in 3 hours sometimes after a day only reflecting. We are not sure what is the issue. we cleared the cache in browser and tried then also its showing the old content. We are using DNS,network load balancer, proxy between the browser and the webserver.
I tired accessing through FQDN, it showed old content, then i accessed through the LB IP it showed the modifed file. For testing i changed the content again and then accessed. This time even for IP it showed old content. Same i tried with the instance 1 IP and Instance 2 IP. On first time it showing properly but after i cahnged the file content and accessed it showing the old file I tried accesing from a different PC where we havent accessed before, there also it showed old content, SO i feel browser cache is not an issue.
We using Source subnet mask IP persistence in load balancer. I am not sure where the old file is cached actually. Will it be cached in Load balancer or proxy or somewhere in webserver. Just we are placing the file in docroot and accessing it in the URL
I'm making a reasonably uninformed comparison here. Since Windows Vista is noted to be more resource intensive and slower than Win XP, are we right in assuming that Windows 2008 is slower than Windows 2003?
For instance, with two boxes with an identical hardware setup but the two different server OSes, will the same application like, say MySQL run slower on the Win 2008 machine?