2011-05-19 15:54:23 -0600, cwillu: [...] > Try with the "ssd_spread" mount option. [...]
Thanks. I'll try that. > > I wonder now what credit to give to recommendations like in > > http://www.patriotmemory.com/forums/showthread.php?3696-HOWTO-Increase-write-speed-by-aligning-FAT32 > > http://linux-howto-guide.blogspot.com/2009/10/increase-usb-flash-drive-write-speed.html > > > > Doing a apt-get upgrade on that stick takes hours when the same > > takes a few minutes on an internal drive. > > Also, there's a package "libeatmydata" which will provide an > "eatmydata" command, which you can prefix your apt-get commands with. > This will disable the excessive sync calls that dpkg makes, and should > dramatically decrease the time for those sorts of things to finish. > Flash as found in thumb drives doesn't have much in the way of crash > guarantees anyway, so you're not really giving up much safety. Thanks. That's very useful indeed. Note that if you use that on aptitude/apg-get that means that the daemons started/restarted in the process will be affected, but it could be all the better in my case. Now, with that eatmydata, I'm thinking of trying qemu-nbd -c /dev/nbd0 /dev/mapper/original-device with that and have the rootfs mounted on that /dev/nbd0. That eatmydata could be a work around to the problem I was mentionning at https://lists.ubuntu.com/archives/ubuntu-server-bugs/2010-June/037846.html -- Stephane -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
