---
title: vmsize
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 10.6+]
path: kernel/segment_command_64/1525695-vmsize
---

# vmsize

Indicates the number of bytes of virtual memory occupied by this segment. See also the description of filesize, below.

## Declaration

```occ
uint64_t vmsize;
```