openldap-devel

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1422 discussions

Re: commit: openldap-guide/admin appendix-ldap-result-codes.sdf aspell.en.pws dbtools.sdf install.sdf overlays.sdf replication.sdf
by Gavin Henry 24 Oct '07

24 Oct '07

> Log Message: > Pull down latest guide updates from HEAD Sorry, should have done that. Gavin.

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Any more upgrading issues we can thing of (2.3.x -> 2.4.x)?
by Gavin Henry 24 Oct '07

24 Oct '07

Need anything more in appendix-upgrading.sdf? I guess we'll see when we're out of Beta. Gavin. -- Kind Regards, Gavin Henry. Managing Director. T +44 (0) 1224 279484 M +44 (0) 7930 323266 F +44 (0) 1224 824887 E ghenry(a)suretecsystems.com Open Source. Open Solutions(tm). http://www.suretecsystems.com/

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last call for testing 2.3, 2.4
by Quanah Gibson-Mount 24 Oct '07

24 Oct '07

Please test current tip for 2.3 and 2.4. All known issues are believed fixed at this time. If there are no problem reports by tomorrow noon my time, I plan on tagging for release 2.3.39 and 2.4.6. Thanks, Quanah -- Quanah Gibson-Mount Principal Software Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration

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Re: thread pools, performance
by Howard Chu 23 Oct '07

23 Oct '07

Rick Jones wrote: > There are definitely interrupt coalescing settings available with tg3-driven > cards, as well as bnx2 driven ones: > > ftp://ftp.cup.hp.com/dist/networking/briefs/nic_latency_vs_tput.txt Really nice work there, thanks. > Also, if the platform and the I/O card support it, and it isn't the default, MSI > or MSI-X interrupts are often lower overhead than legacy INTA irq's. They can > also allow - on NICs which have the support - the interrupts to be spread > intelligently (well, semi-intelligently at least :) across multiple cores. For reference, the machine is a Celestica A8440. http://www.amd.com.cn/CHCN/assets/content_type/DownloadableAssets/A8440_Dat… The ethernet controllers are on a hub attached by HyperTransport to a single processor, I don't think you can usefully distribute the interrupts to anything beyond that socket. > Although, if there is still 10% idle, that probably needs to go next :) Heh heh. The 80/20 rule hits this with a vengeance. That's "10%" of "800%" total, which means really only about 1.2% of a CPU, which is almost totally indistinguishable from measurement error in the oprofile results. This is all intuition (guesswork) now, no more obvious hot spots left to attack. Maybe if I'm really bored over the holidays I'll spend some time on it. (Not likely.) >> Reminds me of the old leapfrogging games with Excelan ethernet cards and >> their onboard TCP engines (15+ years ago), allowing machines of that >> time to hit a whopping 250KB/sec on 10Mbit ethernet. A couple years >> later the main CPUs got fast enough to do 500KB/sec without using the >> cards' "accelerators." It's been many years since I saw another NIC with >> onboard TCP engine after that, but they're on the market now... > > Don't forget the "NFS accelerators" from ca 1990 and where they are today :) I think I have a few in the parts bin... -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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Please test RE24
by Howard Chu 23 Oct '07

23 Oct '07

I don't remember if we posted this already or not. We're prepping 2.4.6 for release; please test RE24 and submit any problems you encounter to the ITS. Likewise, RE23 looks about ready. If you're interested in 2.3.39 please test and report results for RE23 as well. Currently all tests in RE24 pass for me on OpenSUSE 10.2 x86_64 and FedoraCore6 x86_64. -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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ITS#4943 tpool.c, thread pools
by Howard Chu 20 Oct '07

20 Oct '07

I presume we can close this ITS now. I've been running some tests on a quad-processor AMD system, and seeing a lot of mutex contention in the frontend. It looks like the current threadpool and connection manager architecture are a bad fit for a NUMA system like this. I'm planning to add support for multiple thread pools (one per CPU would be the idea) and multiple listener threads to slapd. As a first step, after 2.4.6 is released, I'm going to unifdef the SLAPD_LIGHTWEIGHT_DISPATCHER symbol and delete the old dispatcher code. Based on some experimental changes I've already made, I see a difference between 25K auths/sec with the current code, vs 39K auths/sec using separate thread pools. -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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Re: commit: ldap/doc/man/man8 slapadd.8
by Howard Chu 17 Oct '07

17 Oct '07

quanah(a)OpenLDAP.org wrote: > Update of /repo/OpenLDAP/pkg/ldap/doc/man/man8 > > Modified Files: > slapadd.8 1.46 -> 1.47 > > Log Message: > ITS#5189 add note about db_stat and slapd needing to be run when using quick mode. This note is incorrect and inappropriate. It is inappropriate because db_stat is a BerkeleyDB specific command, it has no relevance to the generic features of slapadd. It is incorrect because most other db_stat options still work. db_stat -c is not "broken" here either; db_stat -c attempts to return lock status information and it correctly tells you that there is no lock information to return. That is not an error, nor does it need fixing. -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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Setting up slapo-pcache with back-config
by Ralf Haferkamp 16 Oct '07

16 Oct '07

Hello, is slapo-pcache supposed to work with back-config with current HEAD? I was not able to create a working configuration, yet. As soon as the olcPcacheConfig Entry is added as a child below a back-ldap Database Entry, slapd tries to open the corresponding bdb/hdb Database for the pcache overlay, which of course does not yet exist as it has to be a child object of the olcPcacheConfig Entry. Any suggestions how this could be fixed? -- Ralf

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Handling bad cn=config updates
by Hallvard B Furuseth 16 Oct '07

16 Oct '07

If I modify olcDbDirectory of a BDB database to a broken directory, the Modify returns success but BDB says "failed to reopen database" and slapd shuts down. Maybe other modifications can shut down slapd too, I don't know. It would be nice if slapd tried to restore the old config value, reopen the old directory, and return unwillingToPerform or something to the Modify. However I don't know how hard that would be, or how obscure a case it is. For that matter, maybe if the Modify broke something it could return some diagnosticMessage. Not sure if it should return non-success since that supposedly means the modify did not happen. Though clients may not display the diagnosticMessage if it comes with 'success'. -- Hallvard

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Re: commit: ldap/servers/slapd/back-bdb config.c
by Pierangelo Masarati 15 Oct '07

15 Oct '07

> Check DB directory validity at config time Of course, there's no guarantee the directory will exist and be writable when really needed ;) Just wanted to note it, I understand it should be considered as likely as someone running rm -rf on the database directory while slapd is running... p. Ing. Pierangelo Masarati OpenLDAP Core Team SysNet s.r.l. 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 ---------------------------------------

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