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From: bugzilla@busybox.net
To: buildroot@uclibc.org
Subject: [Buildroot] [Bug 14996] Too many directories in BR2_EXTERNAL causes hang during make
Date: Fri, 16 Sep 2022 16:16:32 +0000	[thread overview]
Message-ID: <bug-14996-163-lQ0vzys3gh@https.bugs.busybox.net/> (raw)
In-Reply-To: <bug-14996-163@https.bugs.busybox.net/>

https://bugs.busybox.net/show_bug.cgi?id=14996

Yann E. MORIN <yann.morin.1998@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned@buildroot.uclibc |yann.morin.1998@free.fr
                   |.org                        |
                 CC|                            |yann.morin.1998@free.fr
             Status|NEW                         |ASSIGNED

--- Comment #1 from Yann E. MORIN <yann.morin.1998@free.fr> ---
David, All,

Thanks for the report, and the detailed explanations (which I did not yet
entirely
groked, and will need a bit more time before I see the issue).

How many br2-external trees are you using? I've done a bit of testing
with 0 to 1000 br2-external trees, and here are the results:

$ time make BR2_EXTERNAL='' list-defconfigs
real    0m0.129s

$ time make BR2_EXTERNAL='(1 item)' list-defconfigs
real    0m0.138s

$ time make BR2_EXTERNAL='(10 item)' list-defconfigs
real    0m0.262s

$ time make BR2_EXTERNAL='(100 item)' list-defconfigs
real    0m1.912s

$ time make BR2_EXTERNAL='(1000 item)' list-defconfigs
real    0m19.344s

So, what we can see, is that it is roughly linear to the number of br2-external
trees. Even the 1000-tree case is far from appearing stuck (granted, it is a
bit
long, but after seeing 2s for 100 items, it did not feel excruciating to wait).

Also, I do not have any message from make 4.2.1 that reports any infinite
recursion.

Can you provide a bit more details on your configuration?

Regards,
Yann E. MORIN.

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  reply	other threads:[~2022-09-16 16:16 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-16 13:58 [Buildroot] [Bug 14996] New: Too many directories in BR2_EXTERNAL causes hang during make bugzilla
2022-09-16 16:16 ` bugzilla [this message]
2022-09-16 16:53 ` [Buildroot] [Bug 14996] " bugzilla
2022-09-16 17:39 ` bugzilla
2022-09-16 17:56 ` bugzilla
2022-09-16 18:40 ` bugzilla
2022-09-16 18:45 ` bugzilla
2022-09-16 19:19 ` bugzilla
2022-09-17  6:54 ` bugzilla
2022-09-17  7:36 ` bugzilla
2022-09-19 17:27 ` bugzilla
2022-09-19 21:06 ` bugzilla
2022-09-20 19:58 ` bugzilla
2022-09-20 20:00 ` bugzilla
2023-01-07 20:11 ` bugzilla

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