Function zmalloc_get_private_dirty

app/redis-6.2.6/src/zmalloc.c:621–623

Return the total number bytes in pages marked as Private Dirty. * * Note: depending on the platform and memory footprint of the process, this * call can be slow, exceeding 1000ms! */

 * call can be slow, exceeding 1000ms!
 */
size_t zmalloc_get_private_dirty(long pid) {
    return zmalloc_get_smap_bytes_by_field("Private_Dirty:",pid);
}

/* Returns the size of physical memory (RAM) in bytes.
 * It looks ugly, but this is the cleanest way to achieve cross platform results.