increase output buffer size slower after 500mb

this should help lowering the memory footprint
naemon · Feb 6, 2025 · dc3bc1a · dc3bc1a
1 parent f6476ce
commit dc3bc1a
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Showing 2 changed files with 11 additions and 3 deletions.
diff --git a/src/OutputBuffer.cc b/src/OutputBuffer.cc
@@ -63,8 +63,16 @@ void OutputBuffer::needSpace(unsigned len)
     {
         unsigned s = size();
         unsigned needed = s + len;
-        while (_max_size < needed) // double, until enough space
-            _max_size *= 2;
+        while (_max_size < needed) {
+            // increase until enough space
+            // double untill 500MB
+            if(_max_size < 500 * 1024 * 1024) {
+                _max_size *= 2;
+            } else {
+                // increase by 25% afterwards
+                _max_size += (_max_size / 4);
+            }
+        }
 
         _buffer = (char *)realloc(_buffer, _max_size);
         _writepos = _buffer + s;

diff --git a/src/OutputBuffer.h b/src/OutputBuffer.h
@@ -10,7 +10,7 @@
 #include <string>
 using namespace std;
 
-#define INITIAL_OUTPUT_BUFFER_SIZE 1
+#define INITIAL_OUTPUT_BUFFER_SIZE 1024
 
 #define RESPONSE_CODE_OK                 200
 #define RESPONSE_CODE_INVALID_HEADER     400