BIND >= 9.18, jemalloc and EL7

[Anand Buddhdev]

Hi Ondřej

Thank you for this explanation. I note that none of the official ISC 
BIND packages for EL7 and EL8 link against jemalloc, even though the 
documentation recommends it.

The jemalloc folks have deemed 3.6 as stable, and that's why it's the 
latest version in EPEL7. For EPEL8 and EPEL9, the jemalloc folks deemed 
version 5.2.1 as stable, and that's what's available.

I suppose that on this basis, it *should* be okay to build and use BIND 
with jemalloc on all these versions. However, I will give this some more 
thought for our own RPMs, and see what we want to do. I'm leaning 
towards building without jemalloc for EL7, and with for EL8 and EL9.

Regards,
Anand

On 25/08/2022 15:54, Ondřej Surý wrote:

> Hi Anand,
> 
> I think there's only a risk that ISC doesn't regularly test with older jemalloc versions,
> so you might get a hit by a bug we are not aware of.
> 
> Upstream recommends upgrading to at least 5.1.0 and further releases (up to 5.3.0)
> fixes some bugs introduced in 5.x releases, but it's ultimately your decision
> 
> It's little bit similar with libuv - you will be better running with latest upstream release,
> but you can get away with older versions too.