Is the maximinm value of network.http.pipelining.maxrequests still 8?

Question

I've detected some slowness in Firefox 17 under Fedora 18, so I decided to modify some configuration options.

So, the question is: Does someone know if the maximum value of network.http.pipelining.maxrequests is still 8?

I find people saying that if I put more than 8, it will be ignored. It seems weird to me that the default value of Fedora and also Centos is 32.

Answer 1

I don't think so. The discussions for this from 2010 refer to an annotated #define from nsHttp.h in the Mozilla CVS tree:

// hard upper limit on the number of requests that can be pipelined
#define NS_HTTP_MAX_PIPELINED_REQUESTS 8 

However, apparently, "For Gecko, XULRunner, and Firefox, CVS trunk is no longer the trunk, and is instead used for Gecko 1.9 / Firefox 3 and the 1.9.0.* / 3.0.* security releases."

The corresponding file in the current "mozilla-release" branch (which I presume includes 17, and it is the same as the "-esr17" branch) does not have that define, and that identifier does not appear in the release tree at all. The actual variable that's set here using the enum name (MAX_PIPELINED_REQUESTS) from nsHttp.h is mMaxPipelinedRequests, and looking at the other references to that, its only restriction would seem to be that it's an unsigned 16-bit value, meaning it has a range of 0-65535.