Messages in this thread |  | | From | space-00002@vortex ... | Subject | Re: buffer/memory strangeness in 2.4.16 / 2.4.17pre2 | Date | Sat, 1 Dec 2001 23:07:19 +0100 |
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It is still the same in 2.4.17pre2 :-(
On Friday 30 November 2001 10:29, Andrew Morton wrote: > space-00002@vortex.physik.uni-konstanz.de wrote: > > Hi, > > > > I am experiencing a bit of strange system behaviour in a vanilla 2.4.16 > > kernel (2.95.3, very stable machine etc.) > > > > I noticed, that after running for a while (day) I had significantly less > > memory available for my simulation program than right after booting. > > Looking at the problem using 'xosview' (or 'free'), I noticed that there > > was a large number of MBs filled with 'buffers' that did not get wiped > > when other programs need the memory. The system seems to rather kill an > > 'offender' than clean out buffers. > > Seconded. After an updatedb run, my 768 megabyte 2.5.1-pre4 machine > shows: > > total used free shared buffers cached > Mem: 770668 384460 386208 0 138548 17744 > -/+ buffers/cache: 228168 542500 > > and, after malloc/memset of 700 megs: > > total used free shared buffers cached > Mem: 770668 73340 697328 0 41160 5960 > -/+ buffers/cache: 26220 744448 > Swap: 499928 18628 481300 > > I repeated the malloc/memset a few times, wrote a gigabyte file > and was unable to make the 40 megabytes of buffermem go away. > > MemTotal: 770668 kB > MemFree: 698008 kB > MemShared: 0 kB > Buffers: 42092 kB > Cached: 6088 kB > SwapCached: 9808 kB > Active: 48064 kB > Inactive: 10112 kB > HighTotal: 0 kB > HighFree: 0 kB > LowTotal: 770668 kB > LowFree: 698008 kB > SwapTotal: 499928 kB > SwapFree: 484512 kB > > After running an extremely memory-intensive test program for > two minutes, buffermem fell to 38 megabytes. > > Seems broken to me. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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