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Date:      Mon, 15 May 2017 18:05:30 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 219124] /var/db/services.db is extremely large for what it does
Message-ID:  <bug-219124-8-r1yTMYMmGW@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-219124-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-219124-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219124

--- Comment #4 from Sean Bruno <sbruno@FreeBSD.org> ---
I'm guessing that this is an initialization problem.  The hash is being set=
up
to handle way more elements than is really needed in here.

% wc -l /etc/services=20
    2495 /etc/services


HASHINFO hinfo =3D {
        .bsize =3D 256,
        .ffactor =3D 4,
        .nelem =3D 32768,
        .cachesize =3D 1024,
        .hash =3D NULL,
        .lorder =3D 0
};



If I change the HASHINFO to be slightly less over engineered (and less futu=
re
proof), I can get the *empty* services file down to 260k, but that's not re=
ally
a huge improvement for a basically empty file.  Should it be that big?  I
didn't really think I was going to have to go and learn berkley DB this wee=
k.=20
:-)


Index: services_mkdb.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- services_mkdb.c     (revision 318297)
+++ services_mkdb.c     (working copy)
@@ -68,10 +68,10 @@
 static void    usage(void);

 HASHINFO hinfo =3D {
-       .bsize =3D 256,
-       .ffactor =3D 4,
-       .nelem =3D 32768,
-       .cachesize =3D 1024,
+       .bsize =3D 48,
+       .ffactor =3D 1,
+       .nelem =3D 4096,
+       .cachesize =3D 256,
        .hash =3D NULL,
        .lorder =3D 0
 };


-rw-r--r--  1 sbruno  sbruno  262720 May 15 12:04 services.db

--=20
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