[Vserver] memory usage
is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. -- Chuck ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] memory usage
Dnia 2006-10-13 12:31, Chuck napisał: is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. http://oldwiki.linux-vserver.org/Memory+Allocation I'm using something like that to gather information for RRD's: /bin/grep ^RSS: /proc/virtual/$hostId/limit|/usr/bin/cut -f2 /bin/grep ^VM: /proc/virtual/$hostId/limit|/usr/bin/cut -f2 regards -- Roman Barczyński romke(at)estrefa.pl ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] memory usage
On Fri, 13 Oct 2006 06:31:21 -0400 Chuck [EMAIL PROTECTED] wrote: is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. i use vserver-stat for informational purposes and not for placing resource limits. to decipher vsz rss (as used in vserver-stat), see http://oldwiki.linux-vserver.org/Memory+Management. of course, memory accounting seems to be such a variable thing from command to command and os to os (see the many internet discussions at large trying to explaining the memory usage reported by top). witnessed within vserver's very own wiki: from http://oldwiki.linux-vserver.org/Memory+Management: the RSS (resident set size) is the amount of pages which are currently in RAM (physical memory) from http://linux-vserver.org/Memory_Limits: The Resident Set Size (rss) is the amount of virtual memory (RAM + swap) that the context is allowed to use so from the vserver wiki (both old new) it appears that for vserver-stat rss = guests' RAM usage, but for memory limits rss = guest's RAM + swap. and then in my case i use vhashify, so all guests using apache have memory shared among them, so properly accounting that shared memory is tricky (does the total shared memory get accounted to each guest, or do you divide the total shared memory equally among all guests, etc). but if you don't have to account for shared usage amoung vservers, then i presume vserver-stat is pretty accurate of each guests' specific memory usage and the difficulty is choosing policy (do you want to limit RAM usage or a guest's total memory usage, ie RAM + swap, if you can even have that granularity in memory limits). i looked into memory limits a year ago or so and gave up as i'm in control of all guests (though it would be nice to keep a process from running away, either from a memory leak or DOS attack). hopefully somebody will correct me if i'm wrong in my details above, but at least look to vserver-stat as a possible answer to your question. corey -- [EMAIL PROTECTED] ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] memory usage
On Friday 13 October 2006 08:23, Corey Wright wrote: i should have read the manual first and asked later :P but in my defense it was VERY early in the am here and i was still waitinig for coffee to brew so i had not had even my first cup yet.. i should try not to think until then :P anyway i discovered virt_mem to put into the flags file which works just fine. your answers actually answered some future things i will be dealing with so thank you ahead of time :D we are letting a friend use a guest as a 'colo' and we want him to have all the resources he needs, but i want to give him a way to see just what he is using, not combined statistics, so i put the virt uptime, cpu, mem and load in there and they report exactly what he will want to see. On Fri, 13 Oct 2006 06:31:21 -0400 Chuck [EMAIL PROTECTED] wrote: is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. i use vserver-stat for informational purposes and not for placing resource limits. to decipher vsz rss (as used in vserver-stat), see http://oldwiki.linux-vserver.org/Memory+Management. of course, memory accounting seems to be such a variable thing from command to command and os to os (see the many internet discussions at large trying to explaining the memory usage reported by top). witnessed within vserver's very own wiki: from http://oldwiki.linux-vserver.org/Memory+Management: the RSS (resident set size) is the amount of pages which are currently in RAM (physical memory) from http://linux-vserver.org/Memory_Limits: The Resident Set Size (rss) is the amount of virtual memory (RAM + swap) that the context is allowed to use so from the vserver wiki (both old new) it appears that for vserver-stat rss = guests' RAM usage, but for memory limits rss = guest's RAM + swap. and then in my case i use vhashify, so all guests using apache have memory shared among them, so properly accounting that shared memory is tricky (does the total shared memory get accounted to each guest, or do you divide the total shared memory equally among all guests, etc). but if you don't have to account for shared usage amoung vservers, then i presume vserver-stat is pretty accurate of each guests' specific memory usage and the difficulty is choosing policy (do you want to limit RAM usage or a guest's total memory usage, ie RAM + swap, if you can even have that granularity in memory limits). i looked into memory limits a year ago or so and gave up as i'm in control of all guests (though it would be nice to keep a process from running away, either from a memory leak or DOS attack). hopefully somebody will correct me if i'm wrong in my details above, but at least look to vserver-stat as a possible answer to your question. corey -- [EMAIL PROTECTED] ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver -- Chuck ...and the hordes of M$*ft users descended upon me in their anger, and asked 'Why do you not get the viruses or the BlueScreensOfDeath or insecure system troubles and slowness or pay through the nose for an OS as *we* do?!!', and I answered...'I use Linux'. The Book of John, chapter 1, page 1, and end of book ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] memory usage
On Fri, Oct 13, 2006 at 06:31:21AM -0400, Chuck wrote: is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. free inside a guest/context is virtualized and shows the amount used by the guest you can get similar data with either vserver-stat and/or the limits proc entry HTH, Herbert -- Chuck ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] memory usage
On Friday 13 October 2006 09:33, Herbert Poetzl wrote: On Fri, Oct 13, 2006 at 06:31:21AM -0400, Chuck wrote: is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. free inside a guest/context is virtualized and shows the amount used by the guest without the virt_mem, i get the same report inside a guest as i get on the host using free.. it shows all memory usage.. the virt_mem appears to show only what is being used by that guest when free runs, so this is what i probably want. you can get similar data with either vserver-stat and/or the limits proc entry HTH, Herbert -- Chuck ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver -- Chuck ...and the hordes of M$*ft users descended upon me in their anger, and asked 'Why do you not get the viruses or the BlueScreensOfDeath or insecure system troubles and slowness or pay through the nose for an OS as *we* do?!!', and I answered...'I use Linux'. The Book of John, chapter 1, page 1, and end of book ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] memory usage
Chuck a écrit : is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. I humbly suggest that you also look at vsmon, which displays in a web page the equivalent of vserver-stat, and more : http://vsmon.revolutionlinux.com/ -- Guillaume Pratte Recherche et développement Révolution Linux Toutes les opinions et les prises de position exprimées dans ce courriel sont celles de son auteur et ne répresentent pas nécessairement celles de Révolution Linux. Any views and opinions expressed in this email are solely those of the author and do not necessarily represent those of Revolution Linux. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] memory usage
On Friday 13 October 2006 13:23, Guillaume Pratte wrote: that is a beautiful system but it is for the server admin. i need for a guest to behave like a standalone server would to the root admin who rents it. he is familiar with linux cmdline utilities and so i need to provide them with accurate results... free must display only that particular guest's memory usage and with virt_mem it seems to do so. other utilities such as top must return only the guest and nothing else hence the rest of the virt_.. i suspect this setup would do it but until i test it more i cannot be positive. Chuck a écrit : is there a way to see how much memory a particular guest is using? maybe something similar to the free command? i have no memory limitations on these first few. I humbly suggest that you also look at vsmon, which displays in a web page the equivalent of vserver-stat, and more : http://vsmon.revolutionlinux.com/ -- Guillaume Pratte Recherche et développement Révolution Linux Toutes les opinions et les prises de position exprimées dans ce courriel sont celles de son auteur et ne répresentent pas nécessairement celles de Révolution Linux. Any views and opinions expressed in this email are solely those of the author and do not necessarily represent those of Revolution Linux. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver -- Chuck ...and the hordes of M$*ft users descended upon me in their anger, and asked 'Why do you not get the viruses or the BlueScreensOfDeath or insecure system troubles and slowness or pay through the nose for an OS as *we* do?!!', and I answered...'I use Linux'. The Book of John, chapter 1, page 1, and end of book ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
