I have checked these...but I don't know what to set them too. Can I get more input? Should I only run 1 index at a time? I have 2 machines (both quad Xeon)..one is running a singel indexing job, the other is running 6 jobs. It looks like they will end up completing in the same amount of total time (i.e. If I create them 1 by one on the first computer it will take just as long as creating them concurrently on the second computer).
Can I tell MySQL to use more CPU or I/O bandwidth to my disks? myisam_max_sort_file_size - what should it be set to. - what does it mean? - Does this relate to any paths that I set with my config? - Does this represent a temporary file created on my system? myisam_max_extra_sort_file_size - what should it be set to. - what does it mean? - Does this relate to any paths that I set with my config? - Does this represent a temporary file created on my system? myisam_sort_buffer - I have 8GB of RAM, what should I set this to? - my machine is dedicated to MySQL Thanks. Chris. -----Original Message----- From: Peter Zaitsev [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 11, 2004 2:03 PM To: Chris Fossenier Cc: 'MySQL List' Subject: Re: Indexing Woes On Wed, 2004-02-11 at 09:29, Chris Fossenier wrote: > Hello, > > I had a question about indexing a while back and everyone screamed > "normalize"!! > > Well...I've normalized much as I'm going to, and at most I have 3 > indexes on any one table. My database has 120 million records in it > and the index creation is taking a ridiculous amount of time. I can > create the same indexes on MS SQL or Oracle in a fraction (a small > fraction) of the time. > > Any tips? If I look at the PROCESSLIST, I can see that MySQL is using > Key Cache instead of File Sort. I've read that File Sort is faster but > have no idea how to force MySQL to use this method. > > When MySQL indexes, does it actually create a copy of the table first > (same size as original .MYD) and then prune it back to a smaller size > for the .MYI? The reason I ask is because one table that I'm indexing > has been running for a long time and the .MYI is only 3GB and the .MYD > is 12GB....not a good sign. > Check myisam_max_sort_file_size, myisam_max_extra_sort_file_size and myisam_sort_buffer description and values. You shall be able to make Repair happening by Sort unless it is unique index, which is much faster. -- Peter Zaitsev, Senior Support Engineer MySQL AB, www.mysql.com Meet the MySQL Team at User Conference 2004! (April 14-16, Orlando,FL) http://www.mysql.com/uc2004/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
