Hello, Has any one successfully brought up more than 16 (15 + DOM0) Xen guests? After the 15th additional guest, xi_create just fails. Is there a way to get more output? Stephen ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> Has any one successfully brought up more than 16 (15 + DOM0) Xen guests? > > After the 15th additional guest, xi_create just fails. Is there a way to > get more output?I''ve successfully started 129 domains, but it was some time ago and its not totally inconceivable that things could have rotted. You''re not simply running out of memory are you? I''m afraid the error codes on failure aren''t very helpful -- its something that we''d certainly like to fix. BTW: What are you using as root file systems for these domains? (not that it effects xi_create). Have you tried using the new tools in the unstable tree? They may give better error messages... Ian ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Mon, 2003-12-08 at 14:00, Ian Pratt wrote:> > Has any one successfully brought up more than 16 (15 + DOM0) Xen guests? > > > > After the 15th additional guest, xi_create just fails. Is there a way to > > get more output? > > I''ve successfully started 129 domains, but it was some time ago > and its not totally inconceivable that things could have rotted. > > You''re not simply running out of memory are you? I''m afraid the > error codes on failure aren''t very helpful -- its something that > we''d certainly like to fix.The machine has 2GB of memory, how much memory did 129 guests require?> > BTW: What are you using as root file systems for these domains? > (not that it effects xi_create).Raw partitions on two SCSI disks.> Have you tried using the new tools in the unstable tree? They may > give better error messages...No, unfortunately I can never get enough time on the machine to do experiment with new versions. Maybe I can squeak in a couple of hours tonight and see where I get. Stephen ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> > I''ve successfully started 129 domains, but it was some time ago > > and its not totally inconceivable that things could have rotted. > > > > You''re not simply running out of memory are you? I''m afraid the > > error codes on failure aren''t very helpful -- its something that > > we''d certainly like to fix. > > The machine has 2GB of memory, how much memory did 129 guests require?According to my notes, I was using a machine with 2GB of RAM, and started domain 0 with 48000KB and all the other domains with 15000KB. There was probably enough spare RAM to start a few more, but I''d only created 129 root file systems, so didn''t try. Xen currently reserves quite a bit of RAM for itself, rather more than is strictly needs for most configurations, but it hasn''t been a priority to fix it. Ian ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> > You''re not simply running out of memory are you? I''m afraid the > > error codes on failure aren''t very helpful -- its something that > > we''d certainly like to fix. > > The machine has 2GB of memory, how much memory did 129 guests require?I''ve glanced over the code and nothing jumps out as having an error boundary at 16 domains. Is it definitely xi_create that fails? Also, are you sure that Xen has correctly found and initialised 2GB of memory? Xen prints out the amount of memory it found very early during boot. -- Keir ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Mon, 2003-12-08 at 15:56, Keir Fraser wrote:> > > You''re not simply running out of memory are you? I''m afraid the > > > error codes on failure aren''t very helpful -- its something that > > > we''d certainly like to fix. > > > > The machine has 2GB of memory, how much memory did 129 guests require? > > I''ve glanced over the code and nothing jumps out as having an error > boundary at 16 domains. Is it definitely xi_create that fails? Also, > are you sure that Xen has correctly found and initialised 2GB of > memory? Xen prints out the amount of memory it found very early during > boot.Yes, -- snip -- Initialised all memory on a 2047MB machine -- snip -- I allocated domain0 48M and each domain received 15M and was able to bring up the 16th guest without a problem. Stephen ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel