malloc_stats(3) Library Functions Manual malloc_stats(3) NAME malloc_stats - print memory allocation statistics LIBRARY Standard C library (libc, -lc) SYNOPSIS #include void malloc_stats(void); DESCRIPTION The malloc_stats() function prints (on standard error) statistics about memory allocated by malloc(3) and related functions. For each arena (allo- cation area), this function prints the total amount of memory allocated and the total number of bytes consumed by in-use allocations. (These two val- ues correspond to the arena and uordblks fields retrieved by mallinfo(3).) In addition, the function prints the sum of these two statistics for all arenas, and the maximum number of blocks and bytes that were ever simulta- neously allocated using mmap(2). ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). allbox; lbx lb lb l l l. Interface Attribute Value T{ malloc_stats() T} Thread safety MT-Safe STANDARDS GNU. HISTORY glibc 2.0. NOTES More detailed information about memory allocations in the main arena can be obtained using mallinfo(3). SEE ALSO mmap(2), mallinfo(3), malloc(3), malloc_info(3), mallopt(3) Linux man-pages 6.18 2026-02-08 malloc_stats(3)