I'd probably need more details to understand what is seen, e.g. a graph over time of the CPU utilization of each core... I've been discussing with people in the past who were saying "not using" mistakingly :-)
-----Original Message----- From: Ulrich Windl [mailto:[email protected]] Sent: Thursday, July 2, 2020 7:15 AM To: [email protected]; Maucci, Cyrille <[email protected]>; [email protected] Cc: [email protected] Subject: Antw: [EXT] RE: slapd 2.4.44 Performance problems >>> "Maucci, Cyrille" <[email protected]> schrieb am 01.07.2020 um >>> 18:06 in Nachricht <df4pr8401mb0555595797f072395c494f6692...@df4pr8401mb0555.namprd84.prod.OUTLOOK. OM>: > I assume this is with back-bdb/hdb and is because Berkeley DB does not > scale beyond 8 cores. There's a difference between "not using" and "not scaling". > > From: Daniel Zuniga [mailto:[email protected]] > Sent: Wednesday, July 1, 2020 3:43 PM > To: Quanah Gibson-Mount <[email protected]> > Cc: [email protected] > Subject: Re: slapd 2.4.44 Performance problems > > Is there a reason why OpenLDAP does not seem to use more than 8 cores > regardless of the number of threads it is being told to use? With 16 > threads it saturates 8 cores, 16 threads and 16 cores still uses 8 > cores, 32 threads and 16 cores... only 8 cores are used.
