Re: [Gluster-users] Disabling read-ahead and io-cache for native fuse mounts

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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 <rgowdapp@xxxxxxxxxx> wrote:


On Tue, Feb 12, 2019 at 5:38 PM Raghavendra Gowdappa <rgowdapp@xxxxxxxxxx> 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?


regards,
Raghavendra
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