cache files are generated, but how can I understand they are used?

With the ‘number of requests’, do you mean the number of HTTP request as reported in a PageSpeed test? Those are not expected to change with WP Super Cache, as I understand it.

And if you already had enabled gzip compression before enabling WP Super Cache (for example through your htaccess file), then the PageSpeed page size would also not change, as far as I’m aware of.

Hi,
Thanks for your reply.
Yes I mean http requests.
I use pingdom for page analysis.
First of all, I deactivated the plugin. I remove supercache related code from wp-config.php
I look at htaccess files and there is no any gzip, etc..
supercache folder is empty.
Thereis no supercache info at bottom of view-source .
I test with pingdom and I got following figures;
Perf. Grade: 75/100,
Requests:153
Load Time:5.2s ( from Nederlands server)
Page Size:2.2MB

After that, I activated plugin.
timestamps are ok.
Settings;
caching is open at easy tab;
‘Use Php for caching’ at Advance tab.
cache fresh is checked.
Late init is checked.

I got those at bottom of view-source.
<!– Dynamic page generated in 1.273 seconds. –>
<!– Cached page generated by WP-Super-Cache on 2015-01-01 22:13:19 –>

<!– super cache –>

Figures from pingdom test are;
Perf. Grade: 75/100,
Requests:153
Load Time:4.0s ( from Nederlands server)
Page Size:2.2MB

I think those figures, with and without supercache plugins, shows some wrong.
But I can not find it.

Could you advise me please?
Regards

Have you tried other settings, such as enabling ‘Compress pages so they’re served more quickly to visitors’ (for the gzip), enabling the preloader, and unchecking the ‘late init’ option?

Your load time did increase with 1.2 seconds, so the plugin does help somewhat for your. A large page size is probably due to a lot of images or javascript, and that’s not something that WP Super Cache improves (as I understand it).

Hi,
Thanks for your reply.
I can’t say something about loading time improvement, because loading time varies from 4s to 5.5s.
But I see those at bottom of view-source; <!– Dynamic page generated in 1.305 seconds. –>
<!– Cached page generated by WP-Super-Cache on 2015-01-02 12:43:22 –>
<!– Compression = gzip –>
there, it says dynamic page generated 1.3s.

I tried other settings what you advised.
But, result is similar.
At the other hand, size of index.html at supercache folder is 65KB.
Here are page analysis figures from pingdom tool;
Size per Content Type
Image 1.3 MB
Script 414.5 kB
Other 264.6 kB
CSS 253.3 kB
HTML 14.0 kB

Requests per Content Type
Image 68
Script 37
CSS 19
Other 17
HTML 2

What can I do to get improvement?
Regards