Minor buildfarm HOWTO comment

Started by Tom Laneover 20 years ago4 messages
#1Tom Lane
tgl@sss.pgh.pa.us

BTW, I noticed that the buildfarm HOWTO says

... Finally, I set up a
cron job on the mirror machine to update the mirror every 15 minutes - this
should not be too big a deal, as CVSup is extremely efficient, and even
doing this so frequently should not incur a lot of bandwidth use.

AFAIK the Postgres anonymous-CVS server is only updated from the master
once an hour, and so there is no point in CVSup'ing from it more than
once an hour.

If you are a committer with direct access to the master CVS server then
maybe there's some point in CVSup'ing your local copy every 15 minutes,
but I think the HOWTO shouldn't recommend that.

(CVS mirrors used only for buildfarm purposes should probably mirror the
slave CVS server anyway, even if you have access rights to the master
server, on grounds of security and bandwidth conservation ...)

regards, tom lane

#2Andrew Dunstan
andrew@dunslane.net
In reply to: Tom Lane (#1)
Re: Minor buildfarm HOWTO comment

Tom Lane wrote:

BTW, I noticed that the buildfarm HOWTO says

... Finally, I set up a
cron job on the mirror machine to update the mirror every 15 minutes - this
should not be too big a deal, as CVSup is extremely efficient, and even
doing this so frequently should not incur a lot of bandwidth use.

AFAIK the Postgres anonymous-CVS server is only updated from the master
once an hour, and so there is no point in CVSup'ing from it more than
once an hour.

If you are a committer with direct access to the master CVS server then
maybe there's some point in CVSup'ing your local copy every 15 minutes,
but I think the HOWTO shouldn't recommend that.

I was told, quite possibly incorrectly, and I forget by whom, that the 1
hour delay didn't apply to CVSup.

(CVS mirrors used only for buildfarm purposes should probably mirror the
slave CVS server anyway, even if you have access rights to the master
server, on grounds of security and bandwidth conservation ...)

I will change it.

cheers

andrew

#3Neil Conway
neilc@samurai.com
In reply to: Andrew Dunstan (#2)
Re: Minor buildfarm HOWTO comment

On 7/18/05 5:13 AM, "Andrew Dunstan" <andrew@dunslane.net> wrote:

I was told, quite possibly incorrectly, and I forget by whom, that the 1
hour delay didn't apply to CVSup.

I think that might have been me -- if you're syncing from
mcvsup.postgresql.org, there should be no delay.

-Neil

#4Andrew Dunstan
andrew@dunslane.net
In reply to: Neil Conway (#3)
Re: Minor buildfarm HOWTO comment

Neil Conway wrote:

On 7/18/05 5:13 AM, "Andrew Dunstan" <andrew@dunslane.net> wrote:

I was told, quite possibly incorrectly, and I forget by whom, that the 1
hour delay didn't apply to CVSup.

I think that might have been me -- if you're syncing from
mcvsup.postgresql.org, there should be no delay.

I used:

*default host=cvsup.postgresql.org

cheers

andrew