[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [HeapProfiler](./puppeteer.protocol.heapprofiler.md) > [StartSamplingRequest](./puppeteer.protocol.heapprofiler.startsamplingrequest.md) ## Protocol.HeapProfiler.StartSamplingRequest interface Signature: ```typescript export interface StartSamplingRequest ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [samplingInterval](./puppeteer.protocol.heapprofiler.startsamplingrequest.samplinginterval.md) | number | Average sample interval in bytes. Poisson distribution is used for the intervals. The default value is 32768 bytes. |