Daily p50, p90 and p95 of the sampled retrieval time to first byte (TTFB) or time to last byte (TTLB) for the selected provider at the probe location, in seconds. Use the selector to switch between TTFB and TTLB. Computed over successful sampled retrieval checks only. Sampled pieces differ in size, so TTLB also depends on the piece size.
The dashed line shows the number of samples each day, plotted against the right axis. Tail percentiles (p90/p95) capture the slow retrievals that median latency hides.
For more information about sampled retrieval checks, see Sampled Retrieval.
Sampled retrieval latency from Europe