Date: Fri, 12 Jul 2013 09:43:52 +0200 From: "Ronald Klop" <ronald-freebsd8@klop.yi.org> To: freebsd-amd64 <freebsd-amd64@freebsd.org>, freebsd-stable <freebsd-stable@freebsd.org>, "Chris H" <bsd-lists@1command.com> Subject: Re: What are the ideal ranges for kern.ipc.shm*? Message-ID: <op.wz3mfeby8527sy@ronaldradial.versatec.local> In-Reply-To: <4640843f1a35075d295f99aa9e8ed951.authenticated@ultimatedns.net> References: <4640843f1a35075d295f99aa9e8ed951.authenticated@ultimatedns.net>
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On Fri, 12 Jul 2013 05:24:55 +0200, Chris H <bsd-lists@1command.com> wrote:
> Greetings,
> Over the years using the xfce4 desktop, I would occasionally receive
> SHM ERROR messages. As they never interfered (so's I could notice), I
> always put off attempting to track the cause down. However, now having
> performed a fairly major upgrade (~1yr since last), The error appears
> to greatly affect KDE4 (used to use kde3) applications I run within
> xfce4. The windows don't re-draw correctly, and I receive additional
> errors,as well:
> ...
> Resource id: 0x0
> X Error: BadDrawable (invalid Pixmap or Window parameter) 9
> Major opcode: 62 (X_CopyArea)
> Resource id: 0x0
> X Error: BadDrawable (invalid Pixmap or Window parameter) 9
> Major opcode: 62 (X_CopyArea)
> Resource id: 0x0
> X Error: BadDrawable (invalid Pixmap or Window parameter) 9
> Major opcode: 62 (X_CopyArea)
> Resource id: 0x0
> X Error: BadDrawable (invalid Pixmap or Window parameter) 9
> Major opcode: 62 (X_CopyArea)
> Resource id: 0x0
> QCoreApplication::postEvent: Unexpected null receiver
> ...
> After much searching, it would appear to be related to the
> kern.ipc.shm* values.
> pertinent details follow:
> FreeBSD udns 8.4-STABLE FreeBSD 8.4-STABLE #3: Tue Jul 2 13:41:21 PDT
> 2013
> root@udns:/usr/obj/usr/src/sys/AMD64 amd64
> with 64Gb ram, and 3 cores, and nvidia-driver-308.88_1.
> # ipcs -M
> shminfo:
> shmmax: 33554432 (max shared memory segment size)
> shmmin: 1 (min shared memory segment size)
> shmmni: 192 (max number of shared memory identifiers)
> shmseg: 128 (max shared memory segments per process)
> shmall: 8192 (max amount of shared memory in pages)
My 9.1-STABLE amd64 with 4GB RAM has these default settings:
ipcs -M
shminfo:
shmmax: 536870912 (max shared memory segment size)
shmmin: 1 (min shared memory segment size)
shmmni: 1024 (max number of shared memory identifiers)
shmseg: 1024 (max shared memory segments per process)
shmall: 131072 (max amount of shared memory in pages)
Regards,
Ronald.
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