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[Solved] Sometimes Long Time to First Byte Time for the first request
11-11-2013, 01:06 PM
Post: #5
RE: Sometimes Long Time to First Byte Time for the first request
(11-11-2013 09:27 AM)robzilla Wrote:  A CDN for your static resources has no effect on the TTFB of your pages. In my experience, it loads well most of the time (all of the time, actually, but your test results clearly indicate otherwise). Perhaps something like a scheduled (cron) job is straining the CPU at intervals, thus interfering with page load times?
Hi robzilla,

thank you very much for your answer. Yes, I know that the CDN has only an effect on static resources. But if you look in my first post, I had also trouble with the TTFB with static resources on my VPS.

I just monitored my cpu usage via "top -d 1" while doing the wegpagetest.org and I found one point: The long TTFB only occurred once during about 40 tests. And in this moment the ps showed that the command php-cgi will need about 28% of cpu usage.

I think this could be the reason but I have no idea what to do in this case?
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RE: Sometimes Long Time to First Byte Time for the first request - BITS - 11-11-2013 01:06 PM

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