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Subject: RE: Please review bsd compile option change
Date: Mon, 28 Jan 2008 18:07:33 -0700
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E07FB51B3@onstor-exch02.onstor.net>
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Thread-Topic: Please review bsd compile option change
Thread-Index: AchiEt2r8MjJLoY2R82uajcNaJ+1IQAADI/w
References: <BB375AF679D4A34E9CA8DFA650E2B04E07FB4FDD@onstor-exch02.onstor.net> <20080128170404.41a9db16@ripper.onstor.net>
From: "Ed Kwan" <ed.kwan@onstor.com>
To: "Andy Sharp" <andy.sharp@onstor.com>

The defect number is 21730.
BrianN has been testing with 16 instances of scripts from LSI, plus =
"system copy all" in nfxsh. =20
I'll check with Max.

Thanks,
Ed

> -----Original Message-----
> From: Andy Sharp
> Sent: Monday, January 28, 2008 5:04 PM
> To: Ed Kwan
> Subject: Re: Please review bsd compile option change
>=20
> On Mon, 28 Jan 2008 14:41:47 -0800 "Ed Kwan" <ed.kwan@onstor.com> =
wrote:
>=20
> > Hi Andy,
> >
> > This is for the BSD compile option change that I mentioned a week or
> > 2 ago.  It's to increase the kmem_map from the default 4MB to 16 MB.
> > From the OpenBSD options(4) man page:
> >
> >      option NKMEMCLUSTERS=3Dvalue
> >      Size of kernel malloc area in CLBYTES-sized logical pages.  =
This
> > area is covered by the kernel submap kmem_map.
> > See /usr/include/machine/param.h for the default value, which is =
port
> > specific.  Increase this value if =E2out of space in kmem_map=E2
> >
> > The change number is 27485.
> >
> > Thanks,
> > Ed
> >
> > =3D=3D=3D=3D //depot/dev/openbsd/src/sys/arch/pmonmips/conf/BOBCAT#1
> > - /homes/edk/p4/dev/openbsd/src/sys/arch/pmonmips/conf/BOBCAT =
=3D=3D=3D=3D
> > 150a151,153
> > >
> > > # Increase kmem_map from the default 4MB to 16MB.
> > > option NKMEMCLUSTERS=3D4096
>=20
> OK, it's coming back to me a little bit.  Has this proven to solve any
> problem(s) that we are having?  I'm worried about what effect this
> change will have on other problems in the memory area but not in this
> area, like user space processes wanting large amounts of memory.  I'm
> also thinking about a large variety of configurations and what effect
> this might have on some configuration(s) that currently work but might
> be perturbed by this w/o our knowing.  Until we get a case #.  OK, so =
I
> guess those are really the same thing.  We only have 256MiB - 48MiB to
> begin with....
>=20
> Did you run this one by Max?  He might have some latent knowledge of
> the effect of increasing this.
