Date: Thu, 20 Nov 2008 10:01:12 +0100 From: "Nick Barkas" <nick.barkas@gmail.com> To: dan-freebsd-fs@ourbrains.org Cc: freebsd-fs@freebsd.org Subject: Re: Large Directories Message-ID: <cd41f5860811200101r15d61aceg26a44dfd0eced0af@mail.gmail.com> In-Reply-To: <20081119143913.GA6058@ourbrains.org> References: <20081119052428.GC4136@ourbrains.org> <cd41f5860811190529y365f876bn4613d77c4164597d@mail.gmail.com> <20081119143913.GA6058@ourbrains.org>
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On Wed, Nov 19, 2008 at 15:39, Dan <dan-freebsd-fs@ourbrains.org> wrote: > Nick Barkas(nick.barkas@gmail.com)@2008.11.19 14:29:24 +0100: > I know about dirhash, but it blows out at a few dozen thousand files. This is because the default maximum amount of memory dirhash is allowed to use is only 2MB. Try increasing vfs.ufs.dirhash_maxmem. Of course, if you do have a directory larger than the amount of memory you can allow dirhash (e.g. millions of files in a directory on a system that doesn't have tens or hundreds of MB of memory to spare), dirhash can't help you. I just did a test creating ten million fake email messages in a maildir, and dirhash needed about 260MB of memory for it. Nick
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