[PATCH] www: speed up global manifest.js.gz w/ "all" extindex

[Eric Wong <e@80x24.org>]

By reducing internal event loop iterations, this brings 300+
inboxes down ~32ms to ~27ms.  It should also be more consistent
on servers with busy event loops since all the Xapian DB traffic
happens at once, theoretically mproving cache utilization.
---
 lib/PublicInbox/ConfigIter.pm   | 7 +++----
 lib/PublicInbox/ManifestJsGz.pm | 5 +++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/PublicInbox/ConfigIter.pm b/lib/PublicInbox/ConfigIter.pm
index 14fcef83..f9e3451a 100644
--- a/lib/PublicInbox/ConfigIter.pm
+++ b/lib/PublicInbox/ConfigIter.pm
@@ -1,12 +1,11 @@
-# Copyright (C) 2020-2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # Intended for PublicInbox::DS::event_loop in read-only daemons
 # to avoid each_inbox() monopolizing the event loop when hundreds/thousands
 # of inboxes are in play.
 package PublicInbox::ConfigIter;
-use strict;
-use v5.10.1;
+use v5.12;
 
 sub new {
 	my ($class, $pi_cfg, $cb, @args) = @_;
@@ -25,7 +24,7 @@ sub event_step {
 	PublicInbox::DS::requeue($self) if defined($section);
 }
 
-# for generic PSGI servers
+# for generic PSGI servers, but also ManifestJsGz w/ ALL extindex
 sub each_section {
 	my $self = shift;
 	my ($pi_cfg, $i, $cb, @arg) = @$self;
diff --git a/lib/PublicInbox/ManifestJsGz.pm b/lib/PublicInbox/ManifestJsGz.pm
index 1f739baa..be5d5f2a 100644
--- a/lib/PublicInbox/ManifestJsGz.pm
+++ b/lib/PublicInbox/ManifestJsGz.pm
@@ -82,8 +82,9 @@ sub response {
 					$ctx->can('list_match_i'), $re, $ctx);
 	sub {
 		$ctx->{-wcb} = $_[0]; # HTTP server callback
-		$ctx->{env}->{'pi-httpd.async'} ?
-				$iter->event_step : $iter->each_section;
+		($ctx->{www}->{pi_cfg}->ALL ||
+					!$ctx->{env}->{'pi-httpd.async'}) ?
+				$iter->each_section : $iter->event_step;
 	}
 }