in reply to Turning off buffering ($|=1) doesn't work on Apache server

You forgot to specify which browser you're using :)   Also, do you have some proxy in between (e.g. squid)? (it might be doing its own buffering...)

As of Apache-1.3.x, this is supposed to work, and in fact, it does work for me, when I test it with Firefox, or simply with telnet from the command line: 

$ telnet localhost 80
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GET /cgi-bin/buffering-test.pl HTTP/1.0

HTTP/1.1 200 OK
Date: Tue, 27 Feb 2007 13:03:09 GMT
Server: Apache/1.3.37 (Unix)
Connection: close
Content-Type: text/html

<html><head></head><body>START
End
</body></html>
Connection closed by foreign host.

[download]

(5 secs pause in between "...START" and "End...")

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