Memory (RAM)

Random Access Memory

SpecProbe can probe RAM information by calling the HardwareProber.Memory property. This populates the following values in accordance to the available information:

Value	Notes
TotalMemory
TotalPhysicalMemory	Unavailable for unrooted Android devices
SystemReservedMemory	Unavailable for unrooted Android devices

How parsing works

This section describes how parsing works for the below systems:

Linux

RAM information is obtained by using the meminfo file from the /proc interface usually accessible by normal users on Linux systems. The following entries are searched for:

• MemTotal

For total usable memory (excluding the memory reserved by the system), it attempts to parse the MemTotal entry to get the size in kB (KiB) to convert it to bytes by multiplying the value by 1024.

However, for total physically installed memory, SpecProbe attempts to fetch the block size for each memory node in bytes by opening the /sys/devices/system/memory/block_size_bytes file as a first step to get accurate information about total memory.

Then, SpecProbe tries to get all the memory blocks and verify that the block is online before trying to add the block size to the total physical memory value in bytes.

To get this information on Android phones and tablets, your device needs to be rooted and SpecProbe needs to be updated to version 1.1.0. Unrooted Android devices only show the total installed memory.

Windows

For Windows systems, it calls the native Windows API function GlobalMemoryStatusEx() to get the total usable installed memory. Then, it calls the GetPhysicallyInstalledSystemMemory() function to get the physically installed system memory in kilobytes. SpecProbe then converts the value to bytes by multiplying it by 1024.

macOS

For Macintosh systems, it executes sysctl with the following arguments:

• hw.memsize_usable: Usable memory size in bytes

• hw.memsize: Total memory size in bytes

Then, SpecProbe processes their values as appropriate.