php - Huge time to first byte on live site

I have problems with loading my site. Time to first byte varies from 0,5 to even 10s. I can't find what may cause that lag in back-end processing.

My site : www.mm.bartoszwasz.pl

Test with GMetrix .bartoszwas.pl/SdPhlpjs

What i already did:

1. Hosting response test - ping www.mm.bartoszwas.pl gave me result of 15ms
2. Putting small php file into my child-theme to check access time (15ms) .php
3. Links changed to HTTPS from normal HTTP - to avoid redirects.
4. Links in wp-config and database updated to HTTPS
5. Disabled plugins

Is anything else i can try?

I have problems with loading my site. Time to first byte varies from 0,5 to even 10s. I can't find what may cause that lag in back-end processing.

My site : www.mm.bartoszwasz.pl

Test with GMetrix https://gtmetrix/reports/mm.bartoszwas.pl/SdPhlpjs

What i already did:

1. Hosting response test - ping www.mm.bartoszwas.pl gave me result of 15ms
2. Putting small php file into my child-theme to check access time (15ms) https://mm.bartoszwas.pl/wp-content/themes/storefront-child/test.php
3. Links changed to HTTPS from normal HTTP - to avoid redirects.
4. Links in wp-config and database updated to HTTPS
5. Disabled plugins

Is anything else i can try?

• php
• performance
• apache

Share Improve this question asked Jan 18, 2019 at 1:14 Bartosz WasBartosz Was 10011 gold badge33 silver badges1212 bronze badges 2

• I can't diagnose, because from here (in U.S.) it is loading almost instantly each of 20 times I tried. – tmdesigned Commented Jan 18, 2019 at 1:17
• Thank's for testing. Good to hear you don't have any problems, that means that the problem doesn't occur that often. But still i have to lower this TTFB time. Even 2s is huge.. – Bartosz Was Commented Jan 18, 2019 at 10:28

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1 Answer 1

Sorted by: Reset to default 0

To check on your own system, use the Developer Tools (usually F12) and the Network tab. That will tell you which request is taking too much time.