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+
63
0
Open Page Rank 8+
775
0
Open Page Rank 7+
2,263
0
Open Page Rank 6+
3,807
0
Open Page Rank 5+
5,698
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
76,565
1
United Kingdom
13,562
1
Canada
13,429
0
India
11,410
0
South Korea
10,315
0
Australia
9,562
0
Germany
8,844
1
France
8,301
0
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Datadog | Splunk RUM |
|---|---|---|
| LCP | 2.1 s | 2.9 s |
| INP | 100 ms | 187 ms |
| CLS | 0.05 | 0.25 |
| TTFB | 700 ms | 450 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.