Sinndir

So A how do you calc including crit for CoH, and are you assuming 5 targets hit = total amount healed?

C = 1/1570 where does this come from?

T = converted GCD that means like what it is now compared to the actual GCD so like 1.4 or 0.1 (difference or actual new GCD?)

Other than that I understand it all pretty much.

 

Lorthof

As Havoc was mentioning A is not about CoH in particular but for any given spell benefitting from haste.

This is a conversion constant for (spell) haste rating. 15.76 spell haste rating is 1% spell haste.

T is the new hasted cast time. The base cast time B (or GCD on instant casts) is divided by (1+your haste rating * haste conversion constant). Given you have 1% haste (15.76 spell haste rating) a CoH cast will have a "hasted cast time" (GCD) T=1.5s/(1+15.76/1576)=1.5s/(1+1%)=1.5s/1.01=1.485s.


As a side note, I have updated my spreadsheet with most of the available 2.4 gear and some fancy new stuff. You can download it from:

V1.1 for Patch 2.4.

 

Havoc12

Whether its one or 5 people it makes no difference for CoH. The value of haste compared to +healing is independent of the number of targets because all targets get healed with the same amount. So both A and k the conversion constant for +healing are simply the values for one target multiplied by the number and targets. So the A/k ratio stays the same regardless of the number of targets. As a result to make my life easy for multiple target spells I calculate it in per target ratio.

For spells like chain heal one has to calculate it for 1, 2 or 3 targets and calculate an average from the WWS stats.

[this bit is not correct]
The calculation however is not entirely correct for CoH, because what you really need to be looking with CoH is burst healing rather than sustained healing. CoH benefits more from haste because to cast n CoH you need n-1 GCDs. The benefit of Haste in senarios where you are bursting n<= 5 at a time is actually significantly greater due to the "free" CoH you get at the begining.
[/this bit is not correct]

[edit] ==> Actually I am wrong. It would not change the Healing/haste ratio.

 

Havoc12

To demonstrate this:

Spamming 4 CoH requires 3 GCDs or 4.5 seconds. That is 4k per person or 2667 HPS on 3 ppl. In constrast in this time you can only land 1 GH for 5.5k.

Even if someone is very low on health, they will get 2k in 1.5 seconds, 1k 1.5 seconds later and another 1k 1.5 seconds later. What more do you need to save an emergency. What kind of damage could someone be possibly taking that exceeds this.

The fact that afterwards you have to wait 1.5 seconds is of no significance, because you dont have to wait for 2.5 seconds WHILE your targets are taking damage.

If you have to spam 6 CoH, that takes 7.5 seconds and heals on 3 ppl for 18k. That is 2.4k HPS.

If you have to spam 8 CoH that takes 10.5 seconds and heals 24k. This is 2.3k HPS

CoH has higher burst healing than GH and FH. Much higher in fact. It also spreads the healing out so it does not cause single target healers on the same targets to overheal as much.

In any situation where you have 3+ people at risk from spike damage, the best spell you have is CoH.

If multiple people are constantly at risk from spike damage and you are spamming CoH 24/7 the benefit of burst HPS is of course lost, but if this is the case then its not possible that you only get 3 ppl from the same group to heal every time.

CoH is an incredibly useful tool in any encounter where multiple people in the raid take a big hit and are are then in risk from spike damage. In any encounter where shamans are handling a lot of the raid damage CoH is also your best spell to use on 3+ people because it synergies much better with chain heal than GH does.

If the damage is in part predictable you can do a fanstastic job by pre-channeling a rank 3 GH and then go into CoH/pom to maximise your burst healing. That is more effective and more efficient.

Its not rocket sience. You can heal these situations with GH or FH if it makes you feel safer. The fact that you feel safer however does not and cannot change the fact that GH and FH are less effective than CoH in such senarios. The healing meters show the difference and in this case the difference is significant. You are not saving more people by using gheal in such situations. You only think you do. If you look at the actual numbers you will see that by adding CoH at key moments you can do a better job at saving people, heal more and reduce the amount of healing burned into overheal. Your take on the relative value of GH vs CoH in 3+ target senarios is subjective. Its based on perceptions not numbers.

There are situations where gheal is your best spell and situations where CoH is your best spell. It is very rare that CoH does not find good use in any fight with high raid damage. Even if it accounts for less healing than GHeal or PoM, the fact that you have it helps you and if you are using it right it also raises both your healing output and your mana efficiency.

 

Jayde

I tend to disagree on the assertion that it leads to less overhealing. Most raids run with healers that use incoming heal monitors, and it's very easy to spread the load of direct healing without heavy overhealing issues. However, if a few targets are at moderately low health, chances are that the other raid healers will not wait for the 700 single-target HP/s to heal up 6-8k damage on a target and just drop a max-rank heal on them anyway. In essence, most of the healing you're doing there is going to be wasted since you're just causing someone else in the raid to overheal a few seconds later.

While the argument about the burst healing from the initial front-loaded 1.5s is an interesting one in some situations, I find on the majority of fights I am casting constantly the entire fight, so it seems mostly like an acedemic statement to look at front-loading vs. back-loading and sustained vs. burst HPS. If a target or targets are taking active damage WHILE you would be expected to be casting, PoM is going to be the highest HPS/cast, as a 1.5s GCD is going to cause it to be around 6.7k HPS/c overall, which will trigger off very quickly under high group damage situations.

I do think it's a bit odd to downplay Chain Heal though. If you look at the average healing done on Chain Heal for a well-geared Shaman (especially with the T6 bonus) 3 targets hit by Chain Heal HP/s is usually about equal to the HP/s on 4 targets hit by CoH...meaning that, in general, you have to be regularly hitting 4-5 targets to get much of an edge against an effective Chain Heal user. So, especially as Shaman set-bonuses are oriented around Chain Heal while ours boosts our GH (in addition to us having absolutely no mana problems right now when using high-rank heals) if you have 1-2 good Resto Shaman in a raid, I see no reason to make them do anything other than focus mostly on Chain Heal + minor patching and only use CoH supplementally--especially not when Priests are so solid direct healers with the option for PoM/Renew and CoH backup.

Anyhow, I think it's probably best to leave this one to rest since there are obviously two sides of the coin. Most depends on raid makeup, in the end, as the majority of fights simply can't support too many AoE raid healers at the same time. Raid makeup with usually dictate what Priests do, as we are usually the most flexible of any healer in terms of assignment viability.

On a completely unrelated note... the regen changes after 2.4 are pretty ridiculous. I have re-socketed my gear to mostly +10 Spirit gems and swapped over to the IED (especially considering that the gemming requirement of more reds than blues became nearly impossible to maintain) and honestly found the regen to be nearly silly. Even in SR gear for RoS, I have never had so much spare mana on that fight. Swapping over to more Spirit-oriented gear certainly affords a lot more flexibility in how one can play with their mana nowadays--and it's really nice to have the freedom to cast virtually anything without worrying too much about it.

The only "problem" with the patch was the fact that Royal gems are really lackluster and I more or less had to re-gem my entire gear set in order to not feel too gimp. On the plus side, Int/Healing gems are quite nice now and the Int socket bonuses on things like PMC make Int/Heal + Spirit + bonus quite a good combo when compared to previous options. Regemming really seems worth it, though, as I was easily pushing over 1k OO5SR regen in raids and in the mid to high 400s Mp5. It's really a crazy amount of regen options currently available through proper gemming. My only wish was that Blizzard would come out with a proper 11 Healing/5 Spirit gem, because it would really rock.

 

Havoc12

If someone has to cancel their heal because the indicator shows a big incoming heal started just before theirs, they have lost 1.5 seconds without doing anything. So incoming indicators do not alleviate the problem, if heals are started within 0.5 seconds of each other, which is very often the case. But lets look at the senario just mentioned:

8 k damage on a single person and 5k damage on two more:

3 CoH=> 3 seconds
1 Chain heal = 2.5 seconds.

3k per person in the group from CoH
3.5k +1.7k+850 from chain heal

6.5k heal to one person

4.7k to another

3850 to 3rd

The group is nearly full, in 3 seconds. Zero overhealing. You can let the shaman mop it up with another chain heal, while you recover the GCD, or you can fire another CoH and let the shamy go to other targets.

It takes more time to heal the same damage with chain heals or gheal/chain heal. So the delay before your next heal is rarely significant.

CoH is not that good for sustained use on 3 ppl. However in any senario where 3+ ppl in a group take sudden large damage or take simultaneous active damage for a short period of time CoH or CoH/pom respectively are the best spell you can use.


Yes shamans can do a good job chain healing and you can stick to single target healing letting them pick up the AoE healing burden and you are very right in saying that most fights cannot support too many AoE raid healers. While priests do not lose much by switching to single target healing, shamans lose a lot, so for cerrtain raid makeups its better to let them do the brunt of the AoE healing.

That does not negate the power of CoH.

 

hordminion

Update this to 2.4 pls.

 

Sinndir

Havoc,

After redoing my calculations with the correct haste forumala, for CoH only I came up with the following numbers:

1 spell haste = 2.62 +heal
1 +heal = 0.382 spell haste
+10 spell haste = 26.2 +heal
+11 healing = 4.2 haste rating

 

Havoc12

What base +healing? 2000?

With 2k healing and A=991, I come up with 1haste = 2.55+ heal

 

Sinndir

1794 base healing, I though haste becomes more beneficial at a certain point?

 

Sinndir

Can you show how you get an A that high? for +2000 healing I get an A of 944.

Z = 2000 * .214 = 428

Z = Spiritual Healing coefficient
L = +healing added to CoH
min = 409
max = 451
CoH Average
= [((min+L)+(max+L))/2]*Z
= [((409+428)+(451+428))/2]*1.1
= [(837+879)/2]*1.1
= [858]*1.1 = 944

 

Havoc12

944+ crit = 944+955*0.1*0.5= 944+47.2 = 991.2

also I think you maybe underestimating k.

The 10% bonus from spiritual healing is applied after +healing is added so k in the haste equation for CoH = 0.214*1.1