[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Tracing](./puppeteer.protocol.tracing.md) > [BufferUsageEvent](./puppeteer.protocol.tracing.bufferusageevent.md) > [value](./puppeteer.protocol.tracing.bufferusageevent.value.md) ## Protocol.Tracing.BufferUsageEvent.value property A number in range \[0..1\] that indicates the used size of event buffer as a fraction of its total size. Signature: ```typescript value?: number; ```