Re: Difference between AS/400 and any normal web server

On Sun, Aug 21, 2022 at 6:22 PM Brad Stone <bvstone@xxxxxxxxx> wrote:

On Sun, Aug 21, 2022 at 11:20 AM Steve Richter <stephenrichter@xxxxxxxxx>
wrote:

Biggest difference between IBM i and a PC web server is performance. IBM

i

just does not scale well. A web page will work great when you demo it to
the user. But a single core power 8 can get bogged down by web code and

the

SQL that serves results sets to the web pages. When that happens, code

that

worked now fails with timeout messages.

Funny, I've seen exactly the opposite. Throw a DB with over 10000 records
at a PC server and watch it TANK hard.

I can't say I have production experience coding applications on a PC
server. So I do not have a solid comparison. I just know I have written a
lot of SQL intensive IBM i code the last 5 years. The applications run
well. But I see it pushing the limits of the single core power 8 hardware
that it runs on. Especially one account where the apps are single page
vue.js web apps that make heavy use of SQL procedure calls which return
results sets to the web page. These apps have acceptable response time most
of the time. When the system bogs down the apps hit the PHP 30 second
limit. Where the PHP server just gives up. Which leaves the javascript
client code hanging. And although PHP timed out, DB2 continues to run
the SQL procedure until completion. And the web user presses the F5 key to
reload the page. Which starts another instance of the now very long running
SQL procedure. Has the potential to be a real trainwreck mess.

-Steve