From Michael.Heep@o2.com Fri Jan 12 16:42:52 2007
From: Michael.Heep@o2.com
To: openldap-bugs@openldap.org
Subject: Antwort: Re: (ITS#4758) valsort + dynlist can cause 100% cpu
	utilization causing slapd to become unresponsive
Date: Fri, 12 Jan 2007 16:42:51 +0000
Message-ID: <200701121642.l0CGgpIZ051900@boole.openldap.org>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============4672732179660911846=="

--===============4672732179660911846==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

Dies ist eine mehrteilige Nachricht im MIME-Format.
--=3D_alternative 005BCC39C1257261_=3D
Content-Type: text/plain; charset=3D"US-ASCII"

Today I deployed a patched 2.3.32 version on one of our replicas and=20
changed the config to include the aforementioned dynlist/valsort=20
construct.
It's been running nicely for a few hours now. Seems like the patch fixed=20
this issue. Thank you very much!

With kind regards
Michael Heep




Pierangelo Masarati <ando(a)sys-net.it>=20
11.01.2007 23:37

An
michael.heep(a)o2.com
Kopie
openldap-its(a)openldap.org
Thema
Re: (ITS#4758) valsort + dynlist can cause 100% cpu utilization causing=20
slapd to become unresponsive=20






michael.heep(a)o2.com wrote:
> the following valsort + dynlist combination causes slapd to utilize 100%=20
cpu
> time when issueing searches against parts of the DIT containing=20
attribute-value
> pairs "created" by dynlist:
>
> overlay dynlist=20
> dynlist-attrset                extensibleObject memberURL uniqueMember=20
>
> overlay valsort=20
> valsort-attr uniqueMember dc=3Do2online,dc=3Dde alpha-ascend
>
> When run independent both overlays work flawlessly.
>=20
A bug (ITS#4801) was recently fixed in slapo-dynlist(5) which appeared=20
in conjunction with slapo-valsort(5).  The fix is available both in HEAD=20
and in re23 CVS (tag OPENLDAP_REL_ENG_2_3).  The relevant change is in=20
servers/slapd/overlays/dynlist.c 1.28 -> 1.29 (HEAD) or 1.5.2.9 ->=20
1.5.2.10 (re23).  Could you please check if it does any good to the=20
issue you reported?

Thanks, p.



Ing. Pierangelo Masarati
OpenLDAP Core Team

SysNet s.n.c.
Via Dossi, 8 - 27100 Pavia - ITALIA
http://www.sys-net.it
------------------------------------------
Office:   +39.02.23998309
Mobile:   +39.333.4963172
Email:    pierangelo.masarati(a)sys-net.it
------------------------------------------



--=3D_alternative 005BCC39C1257261_=3D
Content-Type: text/html; charset=3D"US-ASCII"


<br><font size=3D2 face=3D"sans-serif">Today I deployed a patched 2.3.32 vers=
ion
on one of our replicas and changed the config to include the aforementioned
dynlist/valsort construct.</font>
<br><font size=3D2 face=3D"sans-serif">It's been running nicely for a few hou=
rs
now. Seems like the patch fixed this issue. Thank you very much!</font>
<br>
<br><font size=3D2 face=3D"sans-serif">With kind regards</font>
<br><font size=3D2 face=3D"sans-serif">Michael Heep<br>
</font>
<br>
<br>
<br>
<table width=3D100%>
<tr valign=3Dtop>
<td width=3D40%><font size=3D1 face=3D"sans-serif"><b>Pierangelo Masarati &lt=
;ando(a)sys-net.it&gt;</b>
</font>
<p><font size=3D1 face=3D"sans-serif">11.01.2007 23:37</font>
<td width=3D59%>
<table width=3D100%>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">An</font></div>
<td><font size=3D1 face=3D"sans-serif">michael.heep(a)o2.com</font>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">Kopie</font></div>
<td><font size=3D1 face=3D"sans-serif">openldap-its(a)openldap.org</font>
<tr valign=3Dtop>
<td>
<div align=3Dright><font size=3D1 face=3D"sans-serif">Thema</font></div>
<td><font size=3D1 face=3D"sans-serif">Re: (ITS#4758) valsort + dynlist can
cause 100% cpu utilization causing slapd to become unresponsive</font><font s=
ize=3D2 face=3D"sans-serif">
</font></table>
<br>
<table>
<tr valign=3Dtop>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=3D2><tt>michael.heep(a)o2.com wrote:<br>
&gt; the following valsort + dynlist combination causes slapd to utilize
100% cpu<br>
&gt; time when issueing searches against parts of the DIT containing attribut=
e-value<br>
&gt; pairs &quot;created&quot; by dynlist:<br>
&gt;<br>
&gt; overlay dynlist <br>
&gt; dynlist-attrset &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;e=
xtensibleObject
memberURL uniqueMember <br>
&gt;<br>
&gt; overlay valsort <br>
&gt; valsort-attr uniqueMember dc=3Do2online,dc=3Dde alpha-ascend<br>
&gt;<br>
&gt; When run independent both overlays work flawlessly.<br>
&gt; &nbsp; <br>
A bug (ITS#4801) was recently fixed in slapo-dynlist(5) which appeared
<br>
in conjunction with slapo-valsort(5). &nbsp;The fix is available both in
HEAD <br>
and in re23 CVS (tag OPENLDAP_REL_ENG_2_3). &nbsp;The relevant change is
in <br>
servers/slapd/overlays/dynlist.c 1.28 -&gt; 1.29 (HEAD) or 1.5.2.9 -&gt;
<br>
1.5.2.10 (re23). &nbsp;Could you please check if it does any good to the
<br>
issue you reported?<br>
<br>
Thanks, p.<br>
<br>
<br>
<br>
Ing. Pierangelo Masarati<br>
OpenLDAP Core Team<br>
<br>
SysNet s.n.c.<br>
Via Dossi, 8 - 27100 Pavia - ITALIA<br>
http://www.sys-net.it<br>
------------------------------------------<br>
Office: &nbsp; +39.02.23998309<br>
Mobile: &nbsp; +39.333.4963172<br>
Email: &nbsp; &nbsp;pierangelo.masarati(a)sys-net.it<br>
------------------------------------------<br>
<br>
</tt></font>
<br>
--=3D_alternative 005BCC39C1257261_=3D--



--===============4672732179660911846==--