From 792925ca3694111de6d275fd0d0af5c8ed0b8ece Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Thu, 24 Jun 2021 08:32:05 +0000 Subject: doc: tuning: add a note about Linux sys.vm.max_map_count git tends to die when mmap(2) fails on this limit, so let users know about it. Perhaps git could gracefully fallback. --- Documentation/public-inbox-tuning.pod | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/public-inbox-tuning.pod b/Documentation/public-inbox-tuning.pod index 58937f73..67316fb1 100644 --- a/Documentation/public-inbox-tuning.pod +++ b/Documentation/public-inbox-tuning.pod @@ -34,6 +34,10 @@ Performance on solid state drives Read-only daemons +=item 7 + +Other OS tuning knobs + =back =head2 New inboxes: public-inbox-init -V2 @@ -148,6 +152,15 @@ Transport Layer Security (IMAPS, NNTPS, or via STARTTLS) significantly increases memory use of client sockets, sure to account for that in capacity planning. +=head2 Other OS tuning knobs + +Linux users: the C sysctl may need to be increased if +handling thousands of inboxes (with L) to avoid +out-of-memory errors from git. + +Other OSes may have similar tuning knobs (patches appreciated). + + =head1 CONTACT Feedback encouraged via plain-text mail to L -- cgit v1.2.3-24-ge0c7