In article <ofc1c4e9f9.c7576da0-onc125782b.0059696f-c125782b.0059b...@transmode.se>, [email protected] (Joakim Tjernlund) wrote:
> *From:* Joakim Tjernlund <[email protected]> > *To:* [email protected] > *CC:* [email protected], [email protected], [email protected] > *Date:* Wed, 2 Feb 2011 17:19:57 +0100 > > > > > I'd love to find a better place to ask Linux ( as opposed to bbox > > ) > > questions - but everyone is so helpful here I'm taking advantage. > > > > If anyone knows of a helpful, friendly Linux mailist which I > > should be > > using instead, please do point me to it! > > > > ----------------------------------------------- > > I have an embedded box with no swap file which is running about 40 > > processes. I'm trying to work out how close to the limit of my > > memory I > > am. > > > > Here is what I see > > initial after > > value 12 hours > > soon after > > power-on > > -------- -------- > > MemTotal: 30184 kB 30184 kB > > MemFree: 10912 kB 2048 kB > > Buffers: 0 kB 0 kB > > Cached: 6184 kB 14580 kB > > SwapCached: 0 kB 0 kB > > Active: 10392 kB 11320 kB > > Inactive: 3620 kB 11400 kB > > SwapTotal: 0 kB 0 kB > > SwapFree: 0 kB 0 kB > > Dirty: 0 kB 0 kB > > Writeback: 0 kB 0 kB > > AnonPages: 7848 kB 8160 kB > > Mapped: 2308 kB 2324 kB > > Slab: 3356 kB 3348 kB > > SReclaimable: 1112 kB 944 kB > > SUnreclaim: 2244 kB 2404 kB > > PageTables: 384 kB 396 kB > > Quicklists: 36 kB 64 kB > > NFS_Unstable: 0 kB 0 kB > > Bounce: 0 kB 0 kB > > WritebackTmp: 0 kB 0 kB > > CommitLimit: 15092 kB 15092 kB > > Committed_AS: 13780 kB 15068 kB > > VmallocTotal: 507904 kB 507904 kB > > VmallocUsed: 536 kB 536 kB > > VmallocChunk: 507344 kB 507344 kB > > > > I see the memfree has dropped from 11 to 2 megabytes - but I also > > see > > "cached"/"inactive" has taken up the slack. > > > > So the question is - how close is this box to the OOM of doom - > > is the > > inactive cached memory available for re-use if it's needed, or am > > I > > really 2M from the drop? > > > > Put it another way - what numbers above do I need to add/subtract > > to get > > a useful value for "available memory" > > free is supposed to give you that but my BB free (v1.14.2) appears > buggy, how is yours? > I think that Buffers: and Cached: counts as free memory > as these are reclaimed when needed elsewhere free pretty much just outputs the MemFree value from the table above. _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
