The 2010 Linux Storage and Filesystem Summit, day 1

Posted Aug 11, 2010 16:53 UTC (Wed) by ebiederm (subscriber, #35028)
Parent article: The 2010 Linux Storage and Filesystem Summit, day 1

Did no one talk about fixing our I/O path on swap?

Not long ago I had an emacs session go crazy pushing my laptop deep into
swap. I logged in via ssh and killed the emacs free up about 4G and removing the need for the system to be in swap at all.

Running swapoff -a I only achieved about 1MB/s instead of the 15-30MB/s
that the disk should have been able to achieve.

Grumble. All of the fancy algorithms in the world don't help unless we get the fundamentals right.