Question

Hi recently I conducted a test on two different ubuntu servers.

    Here are the results:
    innodb_flush_trx_commit = 1
    Staging Server: 10,000 Inserts ----> 81 seconds  
    innodb_flush_trx_commit = 2 
    Staging Server: 10,000 Inserts ----> 61 seconds  

    Dev     Server: 
    innodb_flush_trx_commit = 1
    10,000 Inserts ----> 5 seconds  
    Dev     Server: 
    innodb_flush_trx_commit = 2
    10,000 Inserts ---->  2 seconds 

    I am clear that performance vary with innodb_flush setting.
    But why there is a huge diff in performance from the server to server ?

What are the things to consider here…?
Here are the some of the details considered but no significant thing to suspect:

    staging server: Intel(R) Xeon(R) CPU X5355 @2.66GHz
                    processor 0, 1  
                    mysql 5.1.61
                    innodb_buffer_pool : 8MB
                    RAM: 4GB                        

    dev     server: AMD Opteron(tm) Processor 4130 @2.60ghZ
                    processor 0, 1  
                    mysql 5.0.67
                    innodb_buffer_pool : 8MB
                    RAM: 4GB

Please help in understanding what is the exact thing that has lead to this huge difference in perfromance on different servers…?

  NOTE: same script used in the same way on noth the servers and not from remote  
        sesrvers.

Thanks in advance.
Regards,
UDAY

Answer 1

Some questions I’d go through…

Is binary logging turned on with one instance and not the other?

Is the staging server using a networked drive to access the mysql data?

Is the filesystem type the same on both servers (ext3, ext2, etc.)?

Disk activity seems to be the culprit here.