Is there an example of a custom profile you can share for my ovirt use case 
(with gfapi enabled)? Or are you just talking about the standard group settings 
for virt as a custom profile?

> On Feb 12, 2019, at 7:22 AM, Raghavendra Gowdappa <[email protected]> wrote:
> 
> https://review.gluster.org/22203 <https://review.gluster.org/22203>
> 
> On Tue, Feb 12, 2019 at 5:38 PM Raghavendra Gowdappa <[email protected] 
> <mailto:[email protected]>> wrote:
> All,
> 
> We've found perf xlators io-cache and read-ahead not adding any performance 
> improvement. At best read-ahead is redundant due to kernel read-ahead and at 
> worst io-cache is degrading the performance for workloads that doesn't 
> involve re-read. Given that VFS already have both these functionalities, I am 
> proposing to have these two translators turned off by default for native fuse 
> mounts.
> 
> For non-native fuse mounts like gfapi (NFS-ganesha/samba) we can have these 
> xlators on by having custom profiles. Comments?
> 
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=1665029 
> <https://bugzilla.redhat.com/show_bug.cgi?id=1665029>
> 
> regards,
> Raghavendra
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