On Thu, Dec 11, 2008 at 9:47 AM, John Drescher <[EMAIL PROTECTED]> wrote: >> Software raid5 using mdadm >> > If this happens during writes. Take a look at the following forum post of > mine. > > http://forums.gentoo.org/viewtopic-p-5307393.html#5307393 > > Also follow the link to the place where I show benchmarks: > http://forums.gentoo.org/viewtopic-t-709075-highlight-.html > > Also if your database is on the same array as your storage either move > it or implement attribute spooling. >
1. SO I have done the strip size to 2048 which gave me a performance boost from 30mb/s to 104mb/s on a bs=1M 2. What would be a difference between these few dd commands, Do those simulate different file sizes ? or ? dd if=/dev/zero of=/home/lucas/bigfile bs=64k count=8192 dd if=/dev/zero of=/home/lucas/bigfile bs=128k count=8192 dd if=/dev/zero of=/home/lucas/bigfile bs=256k count=8192 dd if=/dev/zero of=/home/lucas/bigfile bs=512k count=8192 dd if=/dev/zero of=/home/lucas/bigfile bs=1024k count=8192 dd if=/dev/zero of=/home/lucas/bigfile bs=2048k count=8192 dd if=/dev/zero of=/home/lucas/bigfile bs=4096k count=8192 3. is the stripe_cache_size in bytes? kb? mb? and what is stripe_cache_active tells me? 4. I noticed that iowait is now at about 40% constant...is that good? What exactly iowait does for me? Thanks. Lucas ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
