Datadog vs Splunk RUM
Head-to-head usage across the sites we track.
Top sites by authority
Datadog · Splunk RUM · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
59
0
Open Page Rank 8+
763
0
Open Page Rank 7+
2,243
0
Open Page Rank 6+
3,806
0
Open Page Rank 5+
5,797
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Datadog · Splunk RUM · share of sites in each country using one or the other
United States
78,213
1
Canada
14,219
0
United Kingdom
14,112
1
India
12,015
1
South Korea
10,236
0
Australia
10,155
0
Germany
9,314
1
France
8,839
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Datadog | Splunk RUM |
|---|---|---|
| LCP | 2.1 s | 2.7 s |
| INP | 100 ms | 125 ms |
| CLS | 0.05 | 0.15 |
| TTFB | 700 ms | 400 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.