mod_auth_pam vs mod_perl
Head-to-head usage across the sites we track.
Top sites by authority
mod_auth_pam · mod_perl · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
5
Open Page Rank 8+
0
110
Open Page Rank 7+
1
281
Open Page Rank 6+
1
388
Open Page Rank 5+
2
511
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
mod_auth_pam · mod_perl · share of sites in each country using one or the other
United States
38
2,270
India
4
1,325
Japan
9
1,264
Indonesia
2
1,193
Germany
1
984
United Kingdom
6
968
France
1
850
Canada
6
817
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | mod_auth_pam | mod_perl |
|---|---|---|
| LCP | 1.6 s | 1.5 s |
| INP | 25 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 650 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.