real v available memory ? z240 desktop

Hastur

Hastur

Why is the avail less? Also how do I know if freebsd15.1 is using a gpu or graphics card?
real memory = 8589934592 (8192 MB)
avail memory = 7147646976 (6816 MB)

Code: 
---<<BOOT>>---
Copyright (c) 1992-2025 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 15.1-RELEASE-p3 releng/15.1-n283611-88e7371d9dc2 GENERIC amd64
FreeBSD clang version 19.1.7 (https://github.com/llvm/llvm-project.git llvmorg-19.1.7-0-gcd708029e0b2)
VT(efifb): resolution 1024x768
CPU: Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (3400.00-MHz K8-class CPU)
  Origin="GenuineIntel"  Id=0x506e3  Family=0x6  Model=0x5e  Stepping=3
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Features2=0x7ffafbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
  AMD Features2=0x121<LAHF,ABM,Prefetch>
  Structured Extended Features=0x29c6fbf<FSGSBASE,TSCADJ,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,NFPUSG,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PROCTRACE>
  Structured Extended Features3=0x9c000000<IBPB,STIBP,L1DFL,SSBD>
  XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
  VT-x: (disabled in BIOS) PAT,HLT,MTF,PAUSE,EPT,UG,VPID
  TSC: P-state invariant, performance statistics
real memory  = 8589934592 (8192 MB)
avail memory = 7147646976 (6816 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <HPQOEM 802E    >
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 hardware threads
random: registering fast source Intel Secure Key Seed
random: fast provider: "Intel Secure Key Seed"
random: unblocking device.
ioapic0 <Version 2.0> irqs 0-119
Launching APs: 1 6 7 3 2 5 4



g@drizzle-drizzle:~ $ cat /etc/rc.conf
hostname="drizzle-drizzle"
ifconfig_em0="DHCP"
sshd_enable="YES"
ftpd_enable="YES"
zfs_enable="YES"
ntpd_enable="YES"
sndiod_enable="YES"
moused_nondefault_enable="NO"
# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
dumpdev="AUTO"
kld_list="i915kms fusefs"
 
Part of the memory is taken up by the kernel after loading, as well as some data structures ahich the system needs to even boot up. That is what is missing from your "real" memory. Also, video memory may be missing from the total, depending on your GFX setup. The integrated GPU usually needs main memory for it's video memory, so the BIOS sets some of that aside. You may tune that, if you don't need it.
 
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