sage@xxxxxxxxxxx said: > On Thu, 7 Mar 2013, Bryan K. Wright wrote: > > sage@xxxxxxxxxxx said: > > - pg log trimming (probably a conservative subset) to avoid memory bloat > > Anything that reduces the size of OSD processes would be appreciated. > You can probably do this with just > log max recent = 1000 > By default it's keeping 100k lines of logs in memory, which can eat a lot of > ram (but is great when debugging issues). Thanks for the tip about "log max recent". I've made this change, but it doesn't seem to significantly reduce the size of the OSD processes. In general, are there some rules of thumb for estimated the memory requirements for OSDs? I see processes blow up to 8gb of resident memory sometimes. If I need to allow for that much memory per OSD process, I may have to just walk away from ceph. Does the memory usage scale with the size of the disks? I've been trying to run 12 OSDs with 12 2TB disks on a single box. Would I be better off (memory-usage-wise) if I RAIDed the disks together and used a single OSD process? Thanks for any advice. Bryan -- ======================================================================== Bryan Wright |"If you take cranberries and stew them like Physics Department | applesauce, they taste much more like prunes University of Virginia | than rhubarb does." -- Groucho Charlottesville, VA 22901| (434) 924-7218 | bryan@xxxxxxxxxxxx ======================================================================== -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
