Comment 8 for bug 755066

Sorry, I don't think that information really tells us anything new. Lots of memory used for the page cache, which isn't surprising. slabinfo does show a large increase in the size of the buffer_head slab at the end, which indicates a lot of stuff waiting to undergo I/O, and again not surprising.

Well, it was worth a try. I've seen systems that ground to a halt because of an in-kernel memory leak or similar creating enormous system-wide memory pressure. But that doesn't seem to be what's happening here unless something went horribly wrong after the logs stop.