VM and swap - it's really unusable
Quoted 12 lines
Re: [2.4.17/18pre] VM and swap - it's really unusable
Right. And that is precisely why I created the "mini-ll" patch. To give the improved "feel" in a way which is acceptable for merging into the 2.4 kernel.
And guess what? Nobody has tested the damn thing, so it's going nowhere.
Here it is again:
I did. Not standalone, but in the combination of:
2.4.17+preempt+lock-break+vmscan.c+read_latency
Had to merge/frop some of the changes, as they are already they already
were in lock-break. So far, the stuff works -> no hangs/freezes/oopses.
My goal in applying this stuff is to get better interactivity and
responsiveness on my laptop (320 MB, eithe 2x or no swap).
The biggest improvements I had recently was the patch to vmscan.c by
Martin v. Leuwen and the inclusion of the read_latency stuff from Andrea (?). That basically removed all the memory problems (cache forcing excessive swapping out) and IO hangs (vmware doing IO freezing system for 10s of seconds).
preempt, lock-break and I think mini-ll have further improved the
interactive "feeling". And no, I have no hard data. I am not into Audio/DVD palyback, so ultra-low worst case latency is not my ultimate desire. Great VM+IO performance while having great interactivity is :-) Which probably brings us back to the topic of this thread :-))
Martin
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