large_client_header_buffers 16 256k;
output_buffers 1 32k;
proxy_buffers 8 32k;
## fastcgi buffers
fastcgi_buffers 16 64k;
Syntax: fastcgi_buffer_size size;
Sets the size of the buffer used for reading the first part of the response received from the FastCGI server. By default, the buffer size is equal to one memory page. This is either 4K or 8K, depending on a platform.
Syntax: fastcgi_buffers number size;
fastcgi_buffers 8 4k|8k;
Sets the number and size of the buffers used for reading a response from the FastCGI server, for a single connection.
Syntax: fastcgi_busy_buffers_size size;
buffering part of the response to a temporary file. By default, size is limited by the size of two buffers set by the fastcgi_buffer_size and fastcgi_buffers directives.
upstrem respone Buffered to temporary files
What is an upstream response is buffered to a temporary file warning?
The warning message indicates that the response was buffered to disk because it doesn’t fit into configured memory buffers. You can adjust buffers to fit complete upstream response. If the maximum possible response size is unknown, we recommend to increase both parameters by factor of two until warnings stop appearing
You should set proxy_max_temp_file_size to 0 in order to remove it
nginx maxium upstream buffersize
fastcgi buffers limit
check memory page size linux
root@instance-1:~# getconf PAGESIZE
Since the page size of the virtual address space is architecture dependent, we may get a different result on a different system