> -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx > [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Tolga Evren > Sent: Monday, September 19, 2005 3:22 AM > To: General Red Hat Linux discussion list > Subject: RE: Used Memory Not Clearing Down On Redhat Machines. > > Hi , > > Look at my memifo pls: > > total: used: free: shared: buffers: cached: > Mem: 8490827776 8118534144 372293632 0 252133376 4320608256 > Swap: 25165725696 113704960 25052020736 > MemTotal: 8291824 kB > MemFree: 363568 kB > MemShared: 0 kB > Buffers: 246224 kB > Cached: 4215008 kB > SwapCached: 4336 kB > Active: 2952512 kB > Inact_dirty: 2277600 kB > Inact_clean: 211712 kB > Inact_target: 1088352 kB > HighTotal: 0 kB > HighFree: 0 kB > LowTotal: 8291824 kB > LowFree: 363568 kB > SwapTotal: 24575904 kB > SwapFree: 24464864 kB > Committed_AS: 621197056 kB > HugePages_Total: 0 > HugePages_Free: 0 > Hugepagesize: 262144 kB > > > The inact_dirty is 2277600 kB . > > > http://www.redhat.com/magazine/001nov04/features/vm/ > > Pages in the inactive dirty state ought to be getting > flushed out to > > disk, but it looks like this isn't happening. > > > > I'm no kernel expert, but it seems to me that something is > causing the > > kernel not to properly launder the inactive dirty memory. > This could > > be a kernel bug, so if you are sure you don't have any hung > processes > > that could be holding the memory open, you should check to see if > > there is a newer kernel available for your system. > > > How can i be sure that this is a bug? > > Kind Regards, > Tolga Evren > > > > > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx > [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Smith, Albert > Sent: Thursday, September 15, 2005 8:35 PM > To: General Red Hat Linux discussion list > Subject: RE: Used Memory Not Clearing Down On Redhat Machines. > > > -----Original Message----- > > From: redhat-list-bounces@xxxxxxxxxx > > [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Eris Caffee > > Sent: Friday, August 12, 2005 11:17 AM > > To: General Red Hat Linux discussion list > > Subject: Re: Used Memory Not Clearing Down On Redhat Machines. > > > > > 15:20:33 up 14 days, 2:16, 1 user, load average: 0.00, > > 0.00, 0.00 > > > 49 processes: 48 sleeping, 1 running, 0 zombie, 0 stopped > > > CPU states: cpu user nice system irq softirq > > iowait idle > > > total 0.8% 0.0% 0.2% 0.0% 0.6% > > 0.0% 198.4% > > > cpu00 0.0% 0.0% 0.0% 0.0% 0.0% > > 0.0% 100.0% > > > cpu01 0.8% 0.0% 0.2% 0.0% 0.6% > > 0.0% 98.4% > > > Mem: 3599032k av, 2926964k used, 672068k free, 0k > > shrd, 82052k > > > buff > > > 469844k actv, 1731916k in_d, 54940k in_c > > > Swap: 2044072k av, 0k used, 2044072k free > > 2614264k > > > cached > > > > You have an awful lot of memory in the in_d state. That is > "Inactive > > Dirty". There's a description of it and the other memory > states (for > > 2.4 kernels at least) here: > > http://www.redhat.com/magazine/001nov04/features/vm/ > > Pages in the inactive dirty state ought to be getting > flushed out to > > disk, but it looks like this isn't happening. > > > > I'm no kernel expert, but it seems to me that something is > causing the > > kernel not to properly launder the inactive dirty memory. > This could > > be a kernel bug, so if you are sure you don't have any hung > processes > > that could be holding the memory open, you should check to see if > > there is a newer kernel available for your system. > > > > Of course, you should also double check to make sure there really > > isn't some process from the analysis job still running and > holding all > > of this memory open. > > > > Eris Caffee > > > > > > -- > > redhat-list mailing list > > unsubscribe > mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > > I did some investigation with RH EL4 and it looks like this > memory problem is addressed with 2.6.x line of kernel. I am > currently compiling > 2.6.13 manually on my EL3 to see the results. > > I will keep you posted. > > Albert Smith > Sr. Unix Systems Administrator > HPCSA, RHCT > Genex Services > 440 E. Swedesford Rd. > Wayne, PA 19087 > albert.smith@xxxxxxxxxxxxxxxxx > (610) 964-5154 > > > > -- > 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=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > > I have seen this on my systems running oracle and/or dell openmange software. So far I removed the dell openmange system and I am currently doing some testing under 2.6 kernel. If you want to see if there is an official bug listed check bugzilla.redhat.com but I don't think I saw one listed as of this time, but acording to dell/redhat the problem is with kernel the 2.4 kernel. Albert Smith Sr. Unix Systems Administrator HPCSA, RHCT Genex Services 440 E. Swedesford Rd. Wayne, PA 19087 albert.smith@xxxxxxxxxxxxxxxxx (610) 964-5154 -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
