Tunning - cache write (database)

2012-10-01 Thread Cesar Inacio Martins
Hi, First, sorry if this isn't the place to get this kind of help... If not, I appreciate some link , forum, where I can try get some answers... My problem: * Using btrfs + compression , flush of 60 MB/s take 4 minutes (on this 4 minutes they keep constatly I/O of +- 4MB/s no disks) (flush

Re: Tunning - cache write (database)

2012-10-01 Thread Fajar A. Nugraha
On Mon, Oct 1, 2012 at 8:27 PM, Cesar Inacio Martins cesar_inacio_mart...@yahoo.com.br wrote: My problem: * Using btrfs + compression , flush of 60 MB/s take 4 minutes (on this 4 minutes they keep constatly I/O of +- 4MB/s no disks) (flush from Informix database) * OpenSuse 12.1

Re: Tunning - cache write (database)

2012-10-01 Thread Fajar A. Nugraha
On Tue, Oct 2, 2012 at 3:16 AM, Clemens Eisserer linuxhi...@gmail.com wrote: I suggest you start by reading http://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg18827.html After that, PROBABLY start your database by preloading libeatmydata to disable fsync completely. Which will cure