I guess the mds cache holds files, attributes etc but how many files will the default "mds_cache_memory_limit": "1073741824" hold? -----Original Message----- From: Stefan Kooman [mailto:stefan@xxxxxx] Sent: vrijdag 5 januari 2018 12:54 To: Patrick Donnelly Cc: Ceph Users Subject: Re: MDS cache size limits Quoting Patrick Donnelly (pdonnell@xxxxxxxxxx): > > It's expected but not desired: http://tracker.ceph.com/issues/21402 > > The memory usage tracking is off by a constant factor. I'd suggest > just lowering the limit so it's about where it should be for your > system. Thanks for the info. Yeah, we did exactly that (observe and adjust setting accordingly). Is this something worth mentioning in the documentation? Escpecially when this "factor" is a constant? Over time (with issue 21402 being worked on) things will change. Ceph operators will want to make use of as much cache as possible without overcommitting (MDS won't notice until there is no more memory left, restart, and looses all its cache :/). Gr. Stefan -- | BIT BV http://www.bit.nl/ Kamer van Koophandel 09090351 | GPG: 0xD14839C6 +31 318 648 688 / info@xxxxxx _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |