Antwort: Re: (ITS#4758) valsort + dynlist can cause 100% cpu utilization causing slapd to become unresponsive
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Today I deployed a patched 2.3.32 version on one of our replicas and changed the config to include the aforementioned dynlist/valsort construct. It's been running nicely for a few hours now. Seems like the patch fixed this issue. Thank you very much!
With kind regards Michael Heep
Pierangelo Masarati ando@sys-net.it 11.01.2007 23:37
An michael.heep@o2.com Kopie openldap-its@openldap.org Thema Re: (ITS#4758) valsort + dynlist can cause 100% cpu utilization causing slapd to become unresponsive
michael.heep@o2.com wrote:
the following valsort + dynlist combination causes slapd to utilize 100%
cpu
time when issueing searches against parts of the DIT containing
attribute-value
pairs "created" by dynlist:
overlay dynlist dynlist-attrset extensibleObject memberURL uniqueMember
overlay valsort valsort-attr uniqueMember dc=o2online,dc=de alpha-ascend
When run independent both overlays work flawlessly.
A bug (ITS#4801) was recently fixed in slapo-dynlist(5) which appeared in conjunction with slapo-valsort(5). The fix is available both in HEAD and in re23 CVS (tag OPENLDAP_REL_ENG_2_3). The relevant change is in servers/slapd/overlays/dynlist.c 1.28 -> 1.29 (HEAD) or 1.5.2.9 -> 1.5.2.10 (re23). Could you please check if it does any good to the 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@sys-net.it ------------------------------------------
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<br><font size=2 face="sans-serif">Today I deployed a patched 2.3.32 version on one of our replicas and changed the config to include the aforementioned dynlist/valsort construct.</font> <br><font size=2 face="sans-serif">It's been running nicely for a few hours now. Seems like the patch fixed this issue. Thank you very much!</font> <br> <br><font size=2 face="sans-serif">With kind regards</font> <br><font size=2 face="sans-serif">Michael Heep<br> </font> <br> <br> <br> <table width=100%> <tr valign=top> <td width=40%><font size=1 face="sans-serif"><b>Pierangelo Masarati <ando@sys-net.it></b> </font> <p><font size=1 face="sans-serif">11.01.2007 23:37</font> <td width=59%> <table width=100%> <tr valign=top> <td> <div align=right><font size=1 face="sans-serif">An</font></div> <td><font size=1 face="sans-serif">michael.heep@o2.com</font> <tr valign=top> <td> <div align=right><font size=1 face="sans-serif">Kopie</font></div> <td><font size=1 face="sans-serif">openldap-its@openldap.org</font> <tr valign=top> <td> <div align=right><font size=1 face="sans-serif">Thema</font></div> <td><font size=1 face="sans-serif">Re: (ITS#4758) valsort + dynlist can cause 100% cpu utilization causing slapd to become unresponsive</font><font size=2 face="sans-serif"> </font></table> <br> <table> <tr valign=top> <td> <td></table> <br></table> <br> <br> <br><font size=2><tt>michael.heep@o2.com wrote:<br> > the following valsort + dynlist combination causes slapd to utilize 100% cpu<br> > time when issueing searches against parts of the DIT containing attribute-value<br> > pairs "created" by dynlist:<br> ><br> > overlay dynlist <br> > dynlist-attrset extensibleObject memberURL uniqueMember <br> ><br> > overlay valsort <br> > valsort-attr uniqueMember dc=o2online,dc=de alpha-ascend<br> ><br> > When run independent both overlays work flawlessly.<br> > <br> A bug (ITS#4801) was recently fixed in slapo-dynlist(5) which appeared <br> in conjunction with slapo-valsort(5). The fix is available both in HEAD <br> and in re23 CVS (tag OPENLDAP_REL_ENG_2_3). The relevant change is in <br> servers/slapd/overlays/dynlist.c 1.28 -> 1.29 (HEAD) or 1.5.2.9 -> <br> 1.5.2.10 (re23). 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: +39.02.23998309<br> Mobile: +39.333.4963172<br> Email: pierangelo.masarati@sys-net.it<br> ------------------------------------------<br> <br> </tt></font> <br> --=_alternative 005BCC39C1257261_=--
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