Re: (iOS AUv3) memory limit for AU Extensions
Re: (iOS AUv3) memory limit for AU Extensions
- Subject: Re: (iOS AUv3) memory limit for AU Extensions
- From: Doug Wyatt <email@hidden>
- Date: Wed, 15 Aug 2018 12:01:32 -0700
Hi all,
I realize that to our developers, Radar can sometimes seem like an opaque black
hole, but to be honest, this mailing list is worse :-P If someone would like to
please write a Radar, we can look at it. While in the case of things like
crashing bugs, a reproduction case helps a lot, in this situation, some
concrete suggestions for how to improve things would be useful.
Due to the limited VM system on iOS, the hard memory limit is not going to go
away, but we would like to reduce pain it's causing.
Doug
> On Jul 27, 2018, at 7:58 , Vieira Damiani, Luis F <email@hidden> wrote:
>
> Even if removing the memory cap is not trivial, providing a warning should be
> straightforward to implement and a good practice.
>
> I agree with Bram that this is a platform, and not an isolated issue, and
> that we should look after each other when it comes to user experience.
>
> Cheers.
>
> On Jul 27, 2018, at 9:39 AM, Lucas Goossen <email@hidden> wrote:
>
>> I think something that is not realized by many developers is that this limit
>> is shared by all instances of the plugin in a particular host. So this means
>> if a user can hit this limitation with even the most conservative memory
>> using plugins.
>>
>> I too would love to see this fixed especially with such big dependence on
>> plugins on the system.
>>
>> On Jul 27, 2018, at 04:28, Bram Bos <email@hidden> wrote:
>>
>>> For me it's mostly a matter of taking precautions. Right now I can open 35
>>> instances of my most demanding plugin before they all go *poof*
>>>
>>> But I don't like having a product with such a gaping boobytrap in it.
>>>
>>> Having said that, there are currently other plugins out there which are
>>> more sample-heavy or graphics/GUI-heavy which crap out after half a dozen
>>> instances. And it's reflecting badly on the entire platform (with vocal
>>> users concluding the system isn't ready for prime-time yet).
>>> From: Paul Sanders <email@hidden>
>>> Sent: Friday, July 27, 2018 11:20:40 AM
>>> To: Bram Bos; email@hidden
>>> Subject: Re: (iOS AUv3) memory limit for AU Extensions
>>>
>>> I guess my question would be: what are you using so much RAM for in the
>>> first place? Just my $.02.
>>>
>>> Also: please define 'crash'. Thanks.
>>>
>>> Paul Sanders (occasional poster).
>>>
>>>
>>> On 27/07/2018 10:05, Bram Bos wrote:
>>>
>>> Currently, iOS imposes a memory limit for AUv3 extensions. All combined
>>> instances of an AU extension should remain below a cap of 360Mb memory
>>> usage (on 64 bit devices).
>>>
>>> In all hosts I've tested with, crossing this limit will crash all instances
>>> of the extension without warning, often leading to problems like corrupted
>>> projects etc.
>>>
>>> - Are there any known plans to remove this 360Mb cap? Available memory has
>>> doubled/quadrupled since the standard was introduced, so it seems less
>>> necessary now.
>>>
>>> - Is there a way for either hosts or extensions to catch/prevent the crash
>>> from happening in the first place? Something a little more elegant than
>>> going down in flames 😉
>>>
>>> Thanks for any insights!
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