Linux will always maximize the available memory so you'll generally see High usage all the time, this is quite normal. -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of ESGLinux Sent: Wednesday, 1 July 2009 12:07 a.m. To: General Red Hat Linux discussion list Subject: Re: something like sar for memory? Well, Now I get the info with sar comes the problem to understand the results. Allways I try to see the real used memory in linux I have the same problem, it seems that it´s using ALL the memory. with sar -r: kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree kbswpused %swpused kbswpcad 12:55:01 408540 3740728 90,15 391560 1191012 4096200 332 0,01 48 my system has 4GB and it looks it has 3,7G in use, but I don´t think it´s true. with the free -m command: free -m total used free shared buffers cached Mem: 4052 3705 346 0 384 1217 -/+ buffers/cache: 2103 1948 Swap: 4000 0 4000 the result is the same, but I have heard that the real free memory is the in the colum free in the -/+ buffers/cache, is it true? with vmstat as Manuel suggests: vmstat -s -S m 4248 m total memory 3907 m used memory 2992 m active memory 738 m inactive memory 341 m free memory 404 m buffer memory 1289 m swap cache 4194 m total swap 0 m used swap 4194 m free swap .... what is command I get other results so how many memory are free on my system :-( ? ESG 2009/6/30 ESGLinux <esggrupos@xxxxxxxxx> > Hi, > > thanks for your answer, what I was looking for is just sar ;-) > > Now I feel a bit stupid, I always run sar without parameters and I didn´t > realized it could give me the info I was looking for. > > Thanks again > > Greetings > > ESG > > > > 2009/6/30 Daniel Carrillo <daniel.carrillo@xxxxxxxxx> > > 2009/6/30 ESGLinux <esggrupos@xxxxxxxxx>: >> > Hi all, >> > I´m looking for a command or tool that gives a detailed memory usage >> across >> > time like sar does with CPU, >> > >> > Do you know something like that? >> >> sar -r >> >> man sar >> >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list >> > > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=subscribe https://www.redhat.com/mailman/listinfo/redhat-list ========================================================== For more information on the Television New Zealand Group, visit us online at tvnz.co.nz ========================================================== CAUTION: This e-mail and any attachment(s) contain information that is intended to be read only by the named recipient(s). This information is not to be used or stored by any other person and/or organisation. -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
