Date: 02 Nov 2000 12:02:13 -0500 From: Randell Jesup <rjesup@wgate.com> To: Matt Dillon <dillon@earth.backplane.com> Cc: Marius Bendiksen <mbendiks@eunet.no>, Randell Jesup <rjesup@wgate.com>, arch@FreeBSD.ORG Subject: Re: Like to commit my diskprep Message-ID: <ybupukecnoq.fsf@jesup.eng.tvol.net.jesup.eng.tvol.net> In-Reply-To: Matt Dillon's message of "Thu, 2 Nov 2000 08:32:35 -0800 (PST)" References: <Pine.BSF.4.05.10011021602500.10193-100000@login-1.eunet.no> <200011021632.eA2GWZ138286@earth.backplane.com>
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Matt Dillon <dillon@earth.backplane.com> writes:
>:/ 64m
>:/var 128m
>:/usr 50%
>:/home 50%
>:
>:That would yield more flexibility, at a (hopefully) low additional cost in
>:code.
Not that hard. I'll look into it in my mods.
> With the size of hard disks today I'm not sure there would be much
> need, since generally you will want to specify fixed size partitions
> for all but the last one. For me:
Perhaps. Everyone has their own preference and own situation.
For you all-but-one fixed works. I might want all of them defined as
percentages perhaps, or all but /.
> One thing I am finding myself doing a lot these days is increasing the
> block size for things like /data1 - that will often have fewer larger
> files. FreeBSD4 reserves 16K of VM per struct buf no matter what, so
> increasing the block size from 8K to 16K is a breeze. Larger block
> sizes will put more pressure on the buffer cache and may still have
> heavy-load deadlock situations , but should also generally work.
The defaults for -b and -f and -c for newfs/etc are WOEFULLY
out-of-date. See the sysinstall checkin comment I referenced. I use 16K
myself. It's possible larger might be better, especially for large
partitions - perhaps make it variable on partition size.... And 16 for cpg
is truely criminal (can you say thousands of spare root blocks? And very
slow newfs?)
--
Randell Jesup, Worldgate Communications, ex-Scala, ex-Amiga OS team ('88-94)
rjesup@wgate.com
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