Date: Wed, 12 Jul 2023 13:56:09 +0900 From: Tatsuki Makino <tatsuki_makino@hotmail.com> To: Guido Falsi <mad@madpilot.net>, "ports@FreeBSD.org" <ports@freebsd.org>, George Mitchell <george+freebsd@m5p.com> Subject: Re: Problem with the package builds Message-ID: <SI2PR01MB50362B2FD1174FD36FC22594FA36A@SI2PR01MB5036.apcprd01.prod.exchangelabs.com> In-Reply-To: <d6769539-ef64-93b9-8fd0-d19bec98d4be@madpilot.net> References: <CAN6yY1sxpdmkRr0enxeLH0BUXH8DXZ5WjoyAqX%2BSz=UzQh3=-w@mail.gmail.com> <ZKtcTeZTA9chjo8q@kib.kiev.ua> <SI2PR01MB503665F754B1A08F3B50E350FA30A@SI2PR01MB5036.apcprd01.prod.exchangelabs.com> <CAN6yY1uXX=wYZiry9g2Oe6Nim2AFDqDgziwve3RXFzCYz_3Xog@mail.gmail.com> <SI2PR01MB5036BA215BEDBF0A48F97162FA30A@SI2PR01MB5036.apcprd01.prod.exchangelabs.com> <9427bead-362b-29e9-d7ce-5a038280a8ea@freebsd.org> <SI2PR01MB5036F6DF57C95EB3B031A529FA30A@SI2PR01MB5036.apcprd01.prod.exchangelabs.com> <d6769539-ef64-93b9-8fd0-d19bec98d4be@madpilot.net>
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Guido Falsi wrote on 2023/07/11 16:27:
> Anyway you can monitor "vfs.freevnodes" and "vfs.numvnodes" to discover if that's an issue for you. If numvnodes is very near or above maxvnodes nad at the same time freevnodes is very low you have a problem. Another indicator could be vfs.vnodes_created incrementing very fast together with the previously described condition.
Thank you.
For now, here are the values as they run now.
kern.maxvnodes has been increased to a good number :) (+427921)
# env TZ=Etc/UTC sysctl kern.boottime kern.maxvnodes vfs.numvnodes vfs.freevnodes vfs.vnodes_created
kern.boottime: { sec = 1687490420, usec = 560972 } Fri Jun 23 03:20:20 2023
kern.maxvnodes: 1048576
vfs.numvnodes: 1048572
vfs.freevnodes: 409882
vfs.vnodes_created: 137552034
As a point of concern,
A value where vfs.numvnodes is close to kern.maxvnodes.
The value of vfs.freevnodes is not far from the increased value of kern.maxvnodes.
What do they mean? Hmmm? :)
George Mitchell wrote on 2023/07/10 23:43:
> Dang, I was hoping we could blame it on SCHED_ULE. -- George
I also think ULE is somewhat strange.
For example, the following two.
nice of the shell that will run them is 0.
nice -n 1 process-that-accesses-some-disk
nice -n 20 process-that-accesses-some-disk
It seems that the chance to use the CPU is obtained as per the nice value.
However, I don't think it follows the value that it gets a chance to access the disk.
As a result, even if the scheduling priority is low, it can be terminated first.
This is only a matter of my feeling :)
There is no basis for feeling. Because all the behaviors are written in the program :)
Regards.
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