Hi Gerald, HP has a tuning guide for their bundled Netscape DS, which may be somewhat useful to you for this: http://docs.hp.com/en/7152/nds621_tuning_sizing_13.pdf Of course, Fedora DS and HP's DS are not the same product, but they have common heritage. Excerpt: > The Netscape Directory Server for HP-UX caches entry and indexing > information in memory. HP-UX requires at > least 256 MB of memory for a small deployment. But for large directory > servers, 512MB to 4GB RAM is needed for > best performance. To estimate how much RAM needed for Directory Server > on a system, please use the following > formula: > Total_NDS_RAM = 1.2 * (base_RAM_need_for_slapd_process + caches) > Where > base_RAM_needed_for_slapd_process = 32MB + nsslapd-threadnumber * 1MB > caches = dbcache + SUM(all entry caches) + import_cache > Explanation: > ? 1.2: 20% additional RAM needed for slapd process to handle incoming > LDAP operations. 20% is an > estimated number, and it should be sufficient. However, testing is > needed to ensure that it is enough before > going into production. > ? 32MB: is the size of the slapd process. > ? nsslapd-threadnumber *1MB: each thread needs about 1MB of memory. > ? dbcache: specified as nsslapd-dbcachesize. > ? All entry caches: specified as nsslapd-cachememsize. Gerald Richter wrote: > Hi, > > I just made a test installation of FDS and saw that a ns-slapd without any > user data takes about 120MB of (virtual) memory on my system. > > I would like to run it on a system which limited memory resources, so I am > looking for a way to use less memory. > > I don't have high load on that system and never more than one or two quries in > parallel, so it would be quite ok to reduce the number of threads and things > like this, but beside reducing the cache size of the backend DB I didn't find > any hints what can be done in this direction. > > Any ideas? > > Thanks > > Gerald > > > > > ** Virus checked by BB-5000 Mailfilter ** > > -- > Fedora-directory-users mailing list > Fedora-directory-users at redhat.com > https://www.redhat.com/mailman/listinfo/fedora-directory-users > > >
