From 97a9139a75729c41bb91acd711e8b088e6379600 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Sat, 30 Oct 2021 08:11:41 +0000
Subject: lei_to_mail: limit workers for text, reply and v2 outputs

"text" and "reply" outputs are intended for the pager, so
parallelizing them is a waste of resources.

v2 has shards, of course, so parallelizing writes to it
is also a waste since the deduplication work is a bit
more complex.
---
 lib/PublicInbox/LeiQuery.pm  | 2 +-
 lib/PublicInbox/LeiToMail.pm | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

(limited to 'lib/PublicInbox')

diff --git a/lib/PublicInbox/LeiQuery.pm b/lib/PublicInbox/LeiQuery.pm
index 3d0e5b14..352ee601 100644
--- a/lib/PublicInbox/LeiQuery.pm
+++ b/lib/PublicInbox/LeiQuery.pm
@@ -37,7 +37,7 @@ sub _start_query { # used by "lei q" and "lei up"
 			$lms->lms_write_prepare->lms_pause; # just create
 		}
 	}
-	$l2m and $l2m->{-wq_nr_workers} = $mj //
+	$l2m and $l2m->{-wq_nr_workers} //= $mj //
 		int($nproc * 0.75 + 0.5); # keep some CPU for git
 
 	# descending docid order is cheapest, MUA controls sorting order
diff --git a/lib/PublicInbox/LeiToMail.pm b/lib/PublicInbox/LeiToMail.pm
index 83f58a29..90db30e5 100644
--- a/lib/PublicInbox/LeiToMail.pm
+++ b/lib/PublicInbox/LeiToMail.pm
@@ -415,11 +415,13 @@ sub new {
 		require PublicInbox::LeiViewText;
 		$lei->{lvt} = PublicInbox::LeiViewText->new($lei, $fmt);
 		$self->{base_type} = 'text';
+		$self->{-wq_nr_workers} = 1; # for pager
 		@conflict = qw(mua save);
 	} elsif ($fmt eq 'v2') {
 		die "--dedupe=oid and v2 are incompatible\n" if
 			($lei->{opt}->{dedupe}//'') eq 'oid';
 		$self->{base_type} = 'v2';
+		$self->{-wq_nr_workers} = 1; # v2 has shards
 		$lei->{opt}->{save} = \1;
 		$dst = $lei->{ovv}->{dst} = $lei->abs_path($dst);
 		@conflict = qw(mua sort);
-- 
cgit v1.2.3-24-ge0c7