Dunno if this belongs in this thread, but would it be worth it to completely drop socketing for bonuses with 5haste/6dmg and swap meta to MSD?
No one i've looked at uses MSD at all which should answer my question but I wanted to make sure. The other thread seems out of date on this matter and says "shadowpriests don't generally use any yellow gems".
That changed when they simultaneously added a spell haste / damage orange gem cut, nerfed mystical skyfire's proc, made haste lower the global cooldown, and added ember skyfire with an easy to meet metagem requirement. It's an unholy alignment of the stars, but yes, Ember Skyfire is the way to go now. The numbers I ran a while back said that MSD is roughly a 6 spell damage upgrade over ESD if you have 0 spell haste, and this number decreases as you gain more passive haste. Once you have 150 passive haste, they are both worth 14 spell damage.
As promised, here is the WWS from our (1st!) Naj'entus kill last night. I sustained 865 dps (a 100 dps improvement from my usually standing)
Faede wants to hit 1000 dps. From my armory and WWS, what do I need to change to go that?
First, there's the immediate issue that you are casting flash heal and bandaging. Just doing more shadow damage will heal more health per second than a bandage will due to vampiric embrace. You also lose a ton of mana when shifting out to flash heal. You are better off casting power word shield on yourself right before breaking the shield and then resuming all out damage.
Next, take a look at actual cast time. In a 408 second long fight (almost 7 minutes), you got:
Shadow Word: Pain: 98 ticks, 19.5 seconds cast time, 294 seconds uptime
Vampiric Touch: 86 ticks, 27 seconds cast time, 258 seconds uptime
Starshards: 38 ticks, 12 seconds cast time, 114 seconds uptime
Mind Blast: 27 hits, 40.5 seconds cast time
Shadow Word: Death: 16 hits, 24 seconds cast time
Mind Flay: 70 ticks, 70 seconds cast time
Totaling this up, that's a total of 193 seconds of cast time in a 408 second fight, assuming no spell haste. (If you have spell haste, that just makes this look even worse.) In other words, less than half of the fight you actually cast damaging spells. That's the real problem. Now I know that you lose some damage time while the shield is up, but that's not going to be more than one minute over a 7 minute fight. And spell pushback is going to hurt your mindflay damage if you don't have earthshield and concentration aura. But if you look at DoT uptime, that's clearly not the problem. Your pain uptime is 72%, and it really should be at least 85% on this fight. Your touch uptime is only 63%! Starshards, which can get up to 50% uptime, only hit 28%.
Looking at actual Vampiric Touch uptime relative to other damage spells, you dealt 275945 damage that could trigger Vampiric Touch, or a maximum of 13797 mana. You gained 12521 mana, which is only 90% efficiency. 10% of the damage you dealt didn't regenerate any mana. That could be a lot worse, but still needs improvement.
It just seems like you are spending time not casting damaging spells, and the best way to improve your damage is to cast damage spells.