From: Eric Wong <e@80x24.org>
Date: Sun, 24 Oct 2021 00:20:42 +0000 (-0600)
Subject: http: use a larger buffer for ->getline responses
X-Git-Tag: v1.7.0~67
X-Git-Url: http://www.git.stargrave.org/?p=public-inbox.git;a=commitdiff_plain;h=c410bf707fb77b15698e14119dbf6e14e43479ba;hp=df7a89286e18836670af8270748a9ea00e4961f6

http: use a larger buffer for ->getline responses

64K matches the Linux pipe default, and matches what we use in
httpd/async and qspawn.  This should reduce syscalls used for
serving git packs via dumb HTTP and any ->getline code paths
used by other PSGI code.

This appears to speed up HTML rendering by w3m when serving
giant HTML responsees from the Devel::Mwrap::PSGI memory
debugger.
---

diff --git a/lib/PublicInbox/HTTP.pm b/lib/PublicInbox/HTTP.pm
index 18a19250..e65988be 100644
--- a/lib/PublicInbox/HTTP.pm
+++ b/lib/PublicInbox/HTTP.pm
@@ -235,7 +235,7 @@ sub getline_pull {
 	# limit our own running time for fairness with other
 	# clients and to avoid buffering too much:
 	my $buf = eval {
-		local $/ = \8192;
+		local $/ = \65536;
 		$forward->getline;
 	} if $forward;