Extreme performance degradation everywhere on Yosemite

Originator:taoeffect
Number:rdar://20577619 Date Originated:April 16, 2015
Status:Closed Resolved:In 10.11.
Product:OS X Product Version:10.10.3 (14D131)
Classification:Performance Reproducible:Always
 
Summary:
Since upgrading to 10.10, EVERYTHING is slower.

Typing, clicking, switching apps, deleting emails. Any activity I can think of has been slowed down so significantly that it's gotten me to write this bug report.

You've taken a perfectly good 2.3 GHz MBP Core i7 and turned back the clock on it, perhaps both literally and figuratively.

My MHz now Mega Hurts!

Steps to Reproduce:
1. Boot Yosemite.

Expected Results:
For it to be as "snappy" as 10.9 or snappier.

Actual Results:
PAIN AND SUFFERING.

Version:
10.10.3 (14D131)

Notes:
Netflix videos now stutter. They didn't used to! When I said *everything*, I literally mean everything.

Apps SBOD frequently. Editing long notes for a task in The Hit List caused it to beach ball. Deleting email causes Mail to SBOD. Sometimes scrolling a webpage causes the browser to SBOD.

Your users and YOU are suffering. You brought us to paradise and then take us away? That's WORSE than not bringing us there in the first place!

Configuration:
As mentioned, I've a perfectly good 2.3 GHz Core i7 MBP that was working just fine before upgrading.

Comments

About 70% of the performance (ballpark estimate) can be recovered by forcing my MBP to always use the discrete NVIDIA graphics card by using gfxCardStatus.

By taoeffect at April 30, 2015, 9:53 p.m. (reply...)

Rebooting and limiting the number of open apps "fixes" the issue for me.

Seems like 10.9 could handle stress and heavy use a lot better than 10.10.

By taoeffect at April 18, 2015, 10:41 p.m. (reply...)

I should add, there are weird redraw issues as well, especially reproducible when emails are deleted. It's as if several frames are dropped when animating email rows disappearing.

By taoeffect at April 16, 2015, 10:24 p.m. (reply...)

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