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
109
Open Page Rank 7+
2
279
Open Page Rank 6+
2
376
Open Page Rank 5+
3
487
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
33
1,871
India
4
1,171
Japan
9
1,042
Indonesia
3
1,008
United Kingdom
3
837
Germany
1
828
Canada
5
699
France
1
688
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | mod_auth_pam | mod_perl |
|---|---|---|
| LCP | 1.4 s | 1.5 s |
| INP | 0 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.