On upgrades
Apr. 4th, 2016 11:50 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
izardThere is a common story with with some customers I help with s/w performance:
First they come and tell that they expect the server to perform ~1.3x better on their workload. After some analysis I tell them: yeah, you can achieve it by upgrading from your 2.6.18 kernel (even 2.6.9 :( ) to at least 3.10. Or upgrade JVM from 1.5 to at least 1.7.
No, they tell, we need a magic trick to have at least 30% performance improvement, but without upgrade. The best would be a magic BIOS switch combination... Or software recompile with different compile flags.
Actually sometimes a magic BIOS combination plus different compiler/flags actually provide extra ~15%..
First they come and tell that they expect the server to perform ~1.3x better on their workload. After some analysis I tell them: yeah, you can achieve it by upgrading from your 2.6.18 kernel (even 2.6.9 :( ) to at least 3.10. Or upgrade JVM from 1.5 to at least 1.7.
No, they tell, we need a magic trick to have at least 30% performance improvement, but without upgrade. The best would be a magic BIOS switch combination... Or software recompile with different compile flags.
Actually sometimes a magic BIOS combination plus different compiler/flags actually provide extra ~15%..
