asked upstream about it. The patches are indeed in RHEL4, so they should
be tested by now. They don't seem to qualify as-is to upstream though:
20:52 < ajax> you trade more clients for fewer resources per client
21:05 < ajax> the XID space is carved up weird
21:06 < ajax> (when i say "resources" i mean "protocol objects with an XID")
21:06 < ajax> top three bits are reserved (f*** you lisp), next eight bits are
client id, the
rest are for the client to allocate however it likes.
21:08 < ajax> so, with 256 clients, each of them can create up to 2 ^ (32 - 8 -
3) ~= 2
million resources
21:08 < ajax> 512 clients, one million resources each. etc.
21:09 < ajax> XIDs are allocated client-side to avoid round-tripping to the
server on every
resource creation, but that means you have to be able to allocate
unique ids
within each client. so you have to have some partition...
21:10 < ajax> i suppose the right way to fix this is to do a field survey of
how many
resources a typical "small" app and a typical "big" app use.
21:13 < ajax> on my machine, metacity is far and away the one with the most
resources, and
it's still down around the 2000 mark
21:13 < ajax> you do still want a fairly sizable allocation per client since
XID reuse is
pretty fast and furious, and requires a round trip through xc-misc
21:14 < ajax> and, you can't know that you're talking to an xlib that's new
enough to know
about the newer version of xc-misc
21:18 < ajax> this _might_ be a case where you could do protocol 11.1
meaningfully
21:18 < ajax> which would let the server assign huge ranges to 11.0 clients and
tiny ones to
11.0 clients
21:18 < ajax> uh, tiny ones to 11.1 clients
so, we can fix this in our packages, but it would not be the final
solution.
** Changed in: xorg-server (Ubuntu)
Importance: Undecided => Wishlist
Status: New => Confirmed
** Changed in: x11proto-core (Ubuntu)
Importance: Undecided => Wishlist
Status: New => Confirmed
--
Xorg needs client limit raised
https://bugs.launchpad.net/bugs/260138
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