> From: Rik van Riel [mailto:riel@xxxxxxxxxx] > Sent: Wednesday, May 15, 2013 4:15 PM > To: Dan Magenheimer > Cc: Seth Jennings; Andrew Morton; Greg Kroah-Hartman; Nitin Gupta; Minchan Kim; Konrad Wilk; Robert > Jennings; Jenifer Hopper; Mel Gorman; Johannes Weiner; Larry Woodman; Benjamin Herrenschmidt; Dave > Hansen; Joe Perches; Joonsoo Kim; Cody P Schafer; Hugh Dickens; Paul Mackerras; linux-mm@xxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxx > Subject: Re: [PATCHv11 3/4] zswap: add to mm/ > > On 05/14/2013 04:18 PM, Dan Magenheimer wrote: > > > It's unfortunate that my proposed topic for LSFMM was pre-empted > > by the zsmalloc vs zbud discussion and zswap vs zcache, because > > I think the real challenge of zswap (or zcache) and the value to > > distros and end users requires us to get this right BEFORE users > > start filing bugs about performance weirdness. After which most > > users and distros will simply default to 0% (i.e. turn zswap off) > > because zswap unpredictably sometimes sucks. > > I'm not sure we can get it right before people actually start > using it for real world setups, instead of just running benchmarks > on it. > > The sooner we get the code out there, where users can play with > it (even if it is disabled by default and needs a sysfs or > sysctl config option to enable it), the sooner we will know how > well it works, and what needs to be changed. /me sets stage of first Star Wars (1977) /me envisions self as Obi-Wan Kenobi, old and tired of fighting, in lightsaber battle with protege Darth Vader / Anakin Skywalker /me sadly turns off lightsaber, holds useless handle at waist, takes a deep breath, and promptly gets sliced into oblivion. Time for A New Hope(tm). (/me cc's Jon Corbet for a longshot last chance of making LWN's Kernel Development Quotes of the Week.) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href