user/dev discussion of public-inbox itself
 help / color / mirror / code / Atom feed
From: Eric Wong <e@yhbt.net>
To: meta@public-inbox.org
Subject: Xapian::DB_NO_SYNC option?
Date: Mon, 27 Jan 2020 09:46:30 +0000	[thread overview]
Message-ID: <20200127094630.GA16809@dcvr> (raw)

Since 1.3.2, Xapian has supports a DB_NO_SYNC flag to disable
fsync().  It's available from the new SWIG "Xapian" Perl
bindings, but not the old Search::Xapian XS binding, though it's
easy enough to define ourselves (0x4) when encountering Xapian
1.3.2+.

So I'm wondering if it'd be useful for anybody to provide a
switch or command-line option to disable fsync?  SQLite also
has a PRAGMA to control fsync usage.

Personally, I use the "eatmydata" LD_PRELOAD wrapper a lot and
have always found public-inbox-index and one-off importer
scripts completely unusable without eatmydata.

Everything we store in Xapian, (and even SQLite nowadays) is
regeneratable, anyways, so no risk of data loss in the worst
case.

                 reply	other threads:[~2020-01-27  9:46 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://public-inbox.org/README

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200127094630.GA16809@dcvr \
    --to=e@yhbt.net \
    --cc=meta@public-inbox.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://80x24.org/public-inbox.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).