Re: What degree of concurrency does MySQL support?

2001-01-19 Thread Bob Hall
We are thinking of moving to MySQL. We have a table of several tens of millions of rows, with two indices, which will be accessed by roughly 100 different processes. At any one time, 5 or so of the processes will be doing selects on the table, while 40 or so will be doing updates. However, no

Re: What degree of concurrency does MySQL support?

2001-01-19 Thread Jeremy D. Zawodny
On Fri, Jan 19, 2001 at 06:58:34AM -0500, Bob Hall wrote: MySQL has only table level locking, which means that each update will lock the entire table, which means that updates must be done one at a time. There are a couple of open source extensions of MySQL that are supposed to offer row

Re: What degree of concurrency does MySQL support?

2001-01-19 Thread Bob Hall
On Fri, Jan 19, 2001 at 06:58:34AM -0500, Bob Hall wrote: MySQL has only table level locking, which means that each update will lock the entire table, which means that updates must be done one at a time. There are a couple of open source extensions of MySQL that are supposed to

RE: What degree of concurrency does MySQL support?

2001-01-18 Thread Scott Gerhardt
As far as hardware goes, you should be able to increase performance with more RAM and faster disks such as UW-160 SCSI. Also, I don't think they make dual processor motherboards for Athalons. - Scott (The total throughput we need is on the order of 100 indexed updates per second; currently