Messages in this thread | | | From | Neil Brown <> | Date | Wed, 22 Oct 2003 08:57:52 +1000 | Subject | Re: Strange dcache memory pressure when highmem enabled |
| |
On Thursday October 16, andrea@suse.de wrote: > > I wonder if what he's suffering from is a reduced normal zone due the > mem_map_t being larger. The reduced normal zone will trigger the dcache > shrinking more frequently. But he may want to try again with 2.4.23pre7 > with a classzone aware refill_inactive that will ensure the inactive > list has enough lowmem pages before shrink_caches claims failure. >
I didn't end up trying Andrew's patch, but tried 2.4.23-pre7 instead. It appears to be doing the right thing. Free Highmem (grep HighFree /proc/meminfo) steadily dropped from 3Gig to about 2-3 Meg and stayed there. The dentry cache (grep dentry_cache /proc/slabinfo) climbed up to about 500,000 and stayed there for 24 hours - much better than before where it would often be only a few thousand and we had complaints every night when the backups ran.
Thanks.
NeilBrown - 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/
| |