Ulrich Windl wrote: >>>> Howard Chu <[email protected]> schrieb am 23.05.2022 um 18:04 in Nachricht > <[email protected]>: >> Ulrich Windl wrote: >>>>>> "Paul B. Henson" <[email protected]> schrieb am 22.05.2022 um 04:51 in >>>>>> Nachricht >>> <[email protected]>: >>>> On 5/11/2022 3:48 AM, Soisik Froger wrote: >>>> >>>>> Are this performance issues an expected side-effect of switching to >>>>> dynlist - as the memberOf attributes are now dynamically calculated >>>>> while the memberOf overlay used to writes these attributes - or >>>> >>>> I am also having ongoing sporadic issues with memberOf performance using >>>> the new dynlist overlay. Initially, randomly a server would get into a >>>> state where any query requesting the memberOf attribute would take in >>>> excess of 30 seconds, whereas normally it would only take a fraction of >>>> a second. The symptoms were the same, free memory, no swapping, but >>>> insanely high read IO load. >>> >>> I'm wondering: If you'd make a core dump when the issue happens, how big >> would such a core dump be with MDB? >>> I'm afraid it would be insanely large, containing the whole database. Am I >> wrong? >> >> Yes, you are wrong. >> >> mmap'd memory isn't included in core dumps by default. > > OK, but that makes it hard to debug any MDB issues from the core dump unless > significant parts are copied in to private memory (which I think is not the > idea behind MDB). > Thanks for your concern.
-- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/
