On Fri, 25 Mar 2011 09:54:05 +0100 Tomasz Chmielewski <mangoo@xxxxxxxx> wrote: > On 24.03.2011 02:45, FUJITA Tomonori wrote: > > On Wed, 23 Mar 2011 17:37:53 +0300 > > Степан Фёдоров<stepan.fedorov@xxxxxxxx> wrote: > > > >> My iSER target node has 24Gb of memory. When i add about ~500 LUNs > >> with tgtadm, next i got error "tgtadm: out of memory". > >> > >> 24Gb/500 LUNs == "something about 50 megabytes of memory per LUN". > >> > >> My question is: how can i control this memory usage, and is there > >> ability for me to add about 3500 LUNs on my node with 24Gb of memory? > > > > What version of tgt you use? x86-64 or x86? > > > > I suspect that you hit the number of threads that a single process can > > have. > > > > The amount of system memory can't do anything for it. > > What are the options to have it worked around (long term, in tgtd code)? > > Is preforking a new tgtd process if X threads are reached an option? I've not tried but sounds like too much memory than I expected. I need to investigate. About the number of threads, we creates several threads per lun (they perform I/Os). Probably, we should has the fixed number of pthreads to perform I/Os. -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
