Re: LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITY

I have got the 7.3 PTF Installed (on most of our LPARS) but have not
installed the firmware on our P7+.
Firmware is scheduled for tomorrow afternoon.

We saw a bit of overhead on our development lpar with the PTF installed
but only have 1 day of
performance data to compare. Again the firmware has not been upgraded yet.

Developers did not notice any slow down.

ASP 1 Stg ASP 1 Interactive Avg Batch CPU
Date Day in GB % used Transactions resp jobs hours
18/01/18 Thu 1,592.001 23.96 22,817 .087 2,228 .64
<====AFTER
18/01/17 Wed 1,592.001 23.81 19,786 .053 2,307 2.15
<====BEFORE PTF

Jim

Jim W Grant
Senior VP, Chief Information Officer




From: "Buck Calabro" <kc2hiz@xxxxxxxxx>
To: midrange-l@xxxxxxxxxxxx
Date: 01/19/2018 03:28 PM
Subject: Re: LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITY
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



On 1/11/2018 1:25 PM, Bryan Dietz wrote:

I have concerns around potential performance impacts.

I installed the firmware on my P8 the day after it was released.
I was quite up to date, so it was concurrent (no IPL).
I have not seen any performance degradation.
Mostly I/O bound; relatively little CPU workload.

I have not installed the PTF yet; I need another availability window so
I can IPL the machine. I'm wondering if that is where the performance
hit will come.