Brad Teale wrote: > We are warehousing real-time data. The data is received at up to T1 speeds, > and is broken up and stored into the database in approximately 25 different > tables. Currently MySQL is doing terrific, we are using MyISAM tables and > are storing 24 hours worth of data but we don't have any users and we need > to store 72 hours worth of data. > > Our concern is that when we start letting our users (up to 200 simultaneous) > hit the database, we won't be able to keep up with ingesting and serving > data with the MyISAM locking scheme. > > We have tested Oracle and PostgreSQL which fell behind on the ingest. The > current production system uses regular ISAM files, but we need to make a > certification which requires a relational database. Also, the current > production system doesn't have the feature list the new system has. > > Is there a better database solution or do you think MySQL can handle it? > If MySQL can handle it, would we be better off using InnoDB or MyISAM > tables? > > Thanks, > Brad > > --------------------------------------------------------------------- > Before posting, please check: > http://www.mysql.com/manual.php (the manual) > http://lists.mysql.com/ (the list archive) > > To request this thread, e-mail <[EMAIL PROTECTED]> > To unsubscribe, e-mail <[EMAIL PROTECTED]> > Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Brad, We're in process of evaluating mysql vs our current Oracle 8 system. Importing data is much faster in mysql than oracle according the numbers we're getting. However, from our benchmarking, Oracle seems to be faster on the queries (no writes to db during query time). The table were running our queries against has 46 coulmns and 14 indexes (some columns indexed twice in multi-column indexes). All queries are based on indexed columns. We've also run into some issues trying to delete indexes, 14+ hours before we killed the db and reloaded data, but I may be something stupid. One note on Oracle, $30,000+ for a single processor licence. From our testing, it looks like the bottleneck is disk I/O not processing power. With Oracle, you have better control over which disks your data resides on which lets you balance disk I/O better. However, for $30k, you can buy 10 15,000 rpm drives, stripe them, and then buy another server for replication of data and still have $25K left over. --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
