Reformatted as plain text. ________________________________________ From: Aucoin [mailto:[EMAIL PROTECTED] Sent: Sunday, December 03, 2006 12:17 AM To: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'; 'linux-kernel@vger.kernel.org'; '[EMAIL PROTECTED]' Subject: la la la la ... swappiness
I set swappiness to zero and it doesn't do what I want! I have a system that runs as a Linux based data server 24x7 and occasionally I need to apply an update or patch. It's a BIIIG patch to the tune of several hundred megabytes, let's say 600MB for a good round number. The server software itself runs on very tight memory boundaries, I've preallocated a large chunk of memory that is shared amongst several processes as a form of application cache, there is barely 15% spare memory floating around. The update is delivered to the server as a tar file. In order to minimize down time I untar this update and verify the contents landed correctly before switching over to the updated software. The problem is when I attempt to untar the payload disk I/O starts caching, the inactive page count reels wildly out of control, the system starts swapping, OOM fires and there goes my 4 9's uptime. My system just suffered a catastrophic failure because I can't control pagecache due to disk I/O. I need a pagecache throttle, what do you suggest? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
