* Re: [gentoo-portage-dev] [PATCH] Add repoman check to warn if src_prepare/src_configure are used in EAPI 0/1
@ 2014-01-20 6:02 99% ` Alec Warner
0 siblings, 0 replies; 1+ results
From: Alec Warner @ 2014-01-20 6:02 UTC (permalink / raw
To: gentoo-portage-dev
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On Sun, Jan 19, 2014 at 9:47 PM, Mike Frysinger <vapier@gentoo.org> wrote:
> On Sunday 19 January 2014 11:59:36 Mike Gilbert wrote:
> > On Sun, Jan 19, 2014 at 4:44 AM, Mike Frysinger <vapier@gentoo.org>
> wrote:
> > > Chromium OS for a long time was restricted to EAPI 4 for two reasons --
> > > it had an old portage version (and upgrading to a newer one regressed
> > > performance significantly, so we held off until we could figure out
> why)
> >
> > I am curious to know more about the performance regression if you can
> > share. Is that something that got fixed, or did you disable some
> > features (like the slot-operator stuff)?
>
> we finally tracked it down (was due to new the new FEATURES=merge-sync
> option.
> when you're installing 200 to 500 binary packages (with like 32 in
> parallel),
> that can easily choke your throughput. some systems saw really excessive
> latencies (which i would guess was due to their drive taking longer to
> process
> dirty blocks). but it took us some time to figure that out as we were
> making a
> large version jump and we didn't have too much time to dedicate to
> tracking it
> down. lots o bugs to fix.
> -mike
>
Are you still doing crazy crap like disabling all of the portage locking? ;p
-A
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2014-01-19 16:59 [gentoo-portage-dev] [PATCH] Add repoman check to warn if src_prepare/src_configure are used in EAPI 0/1 Mike Gilbert
2014-01-20 5:47 ` Mike Frysinger
2014-01-20 6:02 99% ` Alec Warner
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