X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=Documentation%2Fpublic-inbox-tuning.pod;h=58937f732dd157dd6be993ba01e7172337131041;hb=0b15dfc58ceaecdcb1c9285c3ad55813006c8338;hp=b4e7698bcca975a972921216128d74225cb222f9;hpb=7cca148aa220d2c747f6487bd8987e0e36db0367;p=public-inbox.git

diff --git a/Documentation/public-inbox-tuning.pod b/Documentation/public-inbox-tuning.pod
index b4e7698b..58937f73 100644
--- a/Documentation/public-inbox-tuning.pod
+++ b/Documentation/public-inbox-tuning.pod
@@ -55,6 +55,15 @@ public-inbox processes.
 More (optional) L<Inline::C> use will be introduced in the future
 to lower memory use and improve scalability.
 
+=head2 libgit2 usage via Inline::C
+
+If libgit2 development files are installed and L<Inline::C>
+is enabled (described above), per-inbox C<git cat-file --batch>
+processes are replaced with a single L<perl(1)> process running
+C<PublicInbox::Gcf2::loop> in read-only daemons.
+
+Available as of public-inbox 1.7.0.
+
 =head2 Performance on rotational hard disk drives
 
 Random I/O performance is poor on rotational HDDs.  Xapian indexing
@@ -74,7 +83,7 @@ sharding imposes a performance penalty for read-only queries.
 
 Users with large amounts of RAM are advised to set a large value
 for C<publicinbox.indexBatchSize> as documented in
-L<public-inbox-config(5)>.
+L<public-inbox-index(1)>.
 
 C<dm-crypt> users on Linux 4.0+ are advised to try the
 C<--perf-same_cpu_crypt> C<--perf-submit_from_crypt_cpus>
@@ -95,7 +104,9 @@ Disabling copy-on-write also disables checksumming, thus C<raid1>
 Fortunately, these SQLite and Xapian indices are designed to
 recoverable from git if missing.
 
-Disabling CoW does not prevent all fragmentation.
+Disabling CoW does not prevent all fragmentation.  Large values
+of C<publicInbox.indexBatchSize> also limit fragmentation during
+the initial index.
 
 Avoid snapshotting subvolumes containing Xapian and/or SQLite indices.
 Snapshots use CoW despite our efforts to disable it, resulting
@@ -145,10 +156,10 @@ Information for *BSDs and non-traditional filesystems especially
 welcome.
 
 Our archives are hosted at L<https://public-inbox.org/meta/>,
-L<http://hjrcffqmbrq6wope.onion/meta/>, and other places
+L<http://4uok3hntl7oi7b4uf4rtfwefqeexfzil2w6kgk2jn5z2f764irre7byd.onion/meta/>, and other places
 
 =head1 COPYRIGHT
 
-Copyright 2020 all contributors L<mailto:meta@public-inbox.org>
+Copyright 2020-2021 all contributors L<mailto:meta@public-inbox.org>
 
 License: AGPL-3.0+ L<https://www.gnu.org/licenses/agpl-3.0.txt>