From 1d449b6b9da0b65f09211601c0d60d7ff66409e8 Mon Sep 17 00:00:00 2001
From: gpuhang <mykyta@nazarenko.sbs>
Date: Fri, 26 Jun 2026 15:58:32 +0200
Subject: [PATCH 1/2] fix the calculation of RAM in MEM to ensure
 MEM_MAX_THREADS works correctly
MIME-Version: 1.0
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Bash completely discards the remainder in this division; that is, if we run make.sh on a machine with a non-standard amount of RAM, for example, on SBC with 8.5 GB of RAM - then after this conversion, we’ll end up with exactly 8 GB, which is incorrect.
---
 make.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/make.sh b/make.sh
index 98c33421..dbdeda1a 100755
--- a/make.sh
+++ b/make.sh
@@ -273,11 +273,11 @@ fi
 # make args
 if [[ "${BUILD}" == "1" ]] || [[ "${DEBUG}" == "1" ]]; then
   if [[ "${OS}" == "Linux" ]]; then
-    MEM="$(( $(($(getconf _PHYS_PAGES) * $(getconf PAGE_SIZE) / (1000 * 1000 * 1000))) * 1000 ))" # in MB
+    MEM=$(( $(getconf _PHYS_PAGES) * $(getconf PAGE_SIZE) / 1000 / 1000 )) # in MB
   elif [[ "${OS}" == "Darwin" ]]; then
-    MEM="$(( $(($(sysctl -n hw.memsize) / (1000 * 1000 * 1000))) * 1000 ))" # in MB
+    MEM=$(( $(sysctl -n hw.memsize) / 1000 / 1000 )) # in MB
   elif [[ "${OS}" == "OpenBSD" ]]; then
-    MEM="$(( $(($(sysctl -n hw.physmem) / (1000 * 1000 * 1000))) * 1000 ))" # in MB
+    MEM=$(( $(sysctl -n hw.physmem) / 1000 / 1000 )) # in MB
   fi
 
   MEM_NEEDED_PER_CORE="3500" # tdlib under g++ needs 3.5 GB

From 08f6902c1304d58289e6527f89a1d3bd9bedff9a Mon Sep 17 00:00:00 2001
From: Nazarenko Mykyta Volodymyrovych <mykyta@nazarenko.sbs>
Date: Mon, 29 Jun 2026 16:58:21 +0200
Subject: [PATCH 2/2] fix the calculation of RAM in MEM to ensure
 MEM_MAX_THREADS works correctly ( x2 )

---
 make.sh | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/make.sh b/make.sh
index dbdeda1a..dbe7026d 100755
--- a/make.sh
+++ b/make.sh
@@ -273,16 +273,22 @@ fi
 # make args
 if [[ "${BUILD}" == "1" ]] || [[ "${DEBUG}" == "1" ]]; then
   if [[ "${OS}" == "Linux" ]]; then
-    MEM=$(( $(getconf _PHYS_PAGES) * $(getconf PAGE_SIZE) / 1000 / 1000 )) # in MB
+    MEM_BYTES=$(( $(getconf _PHYS_PAGES) * $(getconf PAGE_SIZE) ))
+    MEM_DIVISOR=$(( 1024 * 1024 )) # in bytes
   elif [[ "${OS}" == "Darwin" ]]; then
-    MEM=$(( $(sysctl -n hw.memsize) / 1000 / 1000 )) # in MB
+    MEM_BYTES=$(sysctl -n hw.memsize) # in bytes
+    MEM_DIVISOR=$(( 1024 * 1024 ))
   elif [[ "${OS}" == "OpenBSD" ]]; then
-    MEM=$(( $(sysctl -n hw.physmem) / 1000 / 1000 )) # in MB
+    MEM_BYTES=$(sysctl -n hw.physmem) # in bytes
+    MEM_DIVISOR=$(( 1024 * 1024 ))
   fi
-
-  MEM_NEEDED_PER_CORE="3500" # tdlib under g++ needs 3.5 GB
+  
+  # memory in MB rounded to nearest 512 
+  MEM=$(( (${MEM_BYTES} + ( 256 * ${MEM_DIVISOR} )) / ( 512 * ${MEM_DIVISOR}) * 512 ))
+  MEM_NEEDED_PER_CORE="3584" # tdlib under g++ needs 3.5 GB
+  
   if [[ "$(${CXX:-c++} -dM -E -x c++ - < /dev/null | grep CLANG_ATOMIC > /dev/null ; echo ${?})" == "0" ]]; then
-    MEM_NEEDED_PER_CORE="1500" # tdlib under clang++ needs 1.5 GB
+    MEM_NEEDED_PER_CORE="1536" # tdlib under clang++ needs 1.5 GB
   fi
 
   MEM_MAX_THREADS="$((${MEM} / ${MEM_NEEDED_PER_CORE}))"