On Tue, 2006-08-22 at 12:58 +0900, Magnus Damm wrote: > On Mon, 2006-08-21 at 18:16 -0700, Rohit Seth wrote: > > On Mon, 2006-08-21 at 11:47 +0900, Magnus Damm wrote: > > > On Fri, 2006-08-18 at 07:45 -0700, Dave Hansen wrote: > > > > On Fri, 2006-08-18 at 12:08 +0400, Andrey Savochkin wrote: > > > > > > > > > > A) Have separate memory management for each container, > > > > > with separate buddy allocator, lru lists, page replacement > > > > > mechanism. > > > > > That implies a considerable overhead, and the main challenge there > > > > > is sharing of pages between these separate memory managers. > > > > > > > > Hold on here for just a sec... > > > > > > > > It is quite possible to do memory management aimed at one container > > > > while that container's memory still participates in the main VM. > > > > > > > > There is overhead here, as the LRU scanning mechanisms get less > > > > efficient, but I'd rather pay a penalty at LRU scanning time than divide > > > > up the VM, or coarsely start failing allocations. > > > > > > This could of course be solved with one LRU per container, which is how > > > the CKRM memory controller implemented things about a year ago. > > > > Effectively Andrew's idea of faking up nodes is also giving per > > container LRUs. > > Yes, but the NUMA emulation approach is using fixed size containers > where the size is selectable at the kernel command line, while the CKRM > (and pzone) approach provides a more dynamic (and complex) solution.
NUMA emulation does not allow guarantee, only limits. It also doesn't allow over commit (ove commit issue is present in pzone based approach also). > > / magnus > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > ckrm-tech mailing list > https://lists.sourceforge.net/lists/listinfo/ckrm-tech -- ---------------------------------------------------------------------- Chandra Seetharaman | Be careful what you choose.... - [EMAIL PROTECTED] | .......you may get it. ---------------------------------------------------------------------- ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ ckrm-tech mailing list https://lists.sourceforge.net/lists/listinfo/ckrm-tech
