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We've had our ServInt folks take a look at our site to see why there's such a lag to the first byte. And they are now pointing their finger at CS-Cart... can someone help us?
-------------------------- This is what they came back with -------------------------
My reports show:
time_namelookup: 0.569
time_connect: 0.572
time_appconnect: 0.000
time_pretransfer: 0.572
time_redirect: 0.000
time_starttransfer: 2.099
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time_total: 2.144
starttransfer is the Time to First Byte as you've already determined. The causes for this can range from memory leaks, poor coding, slow queries, or lack or resources. I've tried optimizing MySQL using mysqltuner.pl, but it didn't help, and the memory and lack of resources are certainly not a problem on SolidFire.
This leads me to believe that something in your site's configuration or coding is causing a delay when the server goes to retrieve all of the resources necessary to send to the visitor.
Most of the time, it's a plugin or addon that is poorly coded and causes the server to generate a cache of sorts for every visit. Caching problems like this are common in my experience with CMS software. What happens if it's working properly is that the cached files are generated upon the first visit, then those same files are then served to all other visitors after that initial request. The initial request can be slow because it's doing more than collecting, it's creating the cache files. What I suggest checking on your end is whether those cache files are being generated each and every time someone visits the site, instead of already existing files being served.
From my research, this seems to be the case:
root@server [/home/hairsmiz/public_html/var/cache]# find ./* -type f -newermt "10 seconds ago" -exec ls -alht {} \;-rw-rw-rw- 1 nobody nobody 123K Feb 19 09:37 ./misc/statics/js/tygh/scripts-9dc0b275302b6592ecdf5a3967686ecb1392806559.js.gz
-rw-rw-rw- 1 nobody nobody 51K Feb 19 09:37 ./misc/statics/design/themes/basic/css/standalone.da1a42e4072ac28d1f939a816da4c1841392806559.css.gz
-rw-rw-rw- 1 nobody nobody 273K Feb 19 09:37 ./misc/1/theme_editor/standalone.da1a42e4072ac28d1f939a816da4c1841392806559.css
The above shows that within the /var/cache folder every time I visit the page, I get the following files generated instead of it serving me the already existing files.
You will need to contact the software developer at this point and report my findings. They should be able to make sure the caching plugin or feature in the software is configured properly or suggest a way to fix it.
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ServInt MST
We exhausted all options... tried different tweaks and modules... and the easiest thing was to throw more money at it... upgraded out VPS package. Above findings are not very meaningful to us with our limited knowledge.. can someone translate it for us? Our site is at http://www.hairsmize.com (sitting behind cloudflare)
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