---
name: "nvme_power_histogram_desc-libnvme3"
section: "2"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme_power_histogram_desc-libnvme3"
---

# nvme\_power\_histogram\_desc-libnvme3(2)

Power Histogram Descriptor

## NAME

struct nvme\_power\_histogram\_desc - Power Histogram Descriptor

## SYNOPSIS

struct nvme\_power\_histogram\_desc {\
     **\_\_le32 phbc;**\
     **\_\_le32 phblt;**\
 };\

## Members

- phbc

  Power Histogram Bin Count. Does not wrap after FFFFFFFFh. Cleared to 0h if PMC is 0h.

- phblt

  Power Histogram Bin Lower Threshold. Bits 17:16 are PWRS (see *enum nvme\_psd\_ps*), bits 15:0 are PWRV.