Re: Vacuuming the operating system documentation - Mailing list pgsql-hackers

From Magnus Hagander
Subject Re: Vacuuming the operating system documentation
Date
Msg-id CABUevEzvGpFpSxAtpVPuQUROgkmGejaRh2mF0+DcxtqTd3+OCQ@mail.gmail.com
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In response to Re: Vacuuming the operating system documentation  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Vacuuming the operating system documentation  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers


On Sat, Jun 6, 2020 at 4:41 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
> On 2020-06-06 06:57, Thomas Munro wrote:
>> We're carrying a bunch of obsolete and in one case insecure advice on
>> kernel settings.  Here's an attempt to clean some of that up.

> These changes seem sensible to me.

+1

+1 as well.


>> HP-UX:
>> * Drop advice for v10.  11.x came out 23 years ago.

> We still have a version 10 in the build farm. :)

Yeah, but I don't need advice on installing PG on that ;-).  In general,
I think the filter rule could be: is it likely that someone would try to
install PG 13-or-later from scratch (with no pre-existing installation)
on this OS version?  If there is a pre-existing install, they'll already
have dealt with any kernel configuration issues.

So I concur with dropping all this stuff, and while we're at it I'd vote
for getting rid of the oom_adj para.  RHEL6 will be fully EOL around the
time PG13 comes out, so I don't believe anyone's making brand new installs
there either.


Let's hope PG13 isn't that late -- the end of Extended Lifecycle Support is June 30, 2024 for RHEL 6. (It *enters* ELS around the time of pg 13).

And yes, given that, you'd be surprised how many people make brand new installs on that. That said, they *shoudln't*, so I'm fine with dropping the instructions for those as well. With luck it might encourage some people to realize it's a bad idea...

//Magnus

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