Date: Thu, 13 Nov 1997 10:02:56 -0700 From: Steve Passe <smp@csn.net> To: Thomas Dean <tomdean@ix.netcom.com> Cc: drussell@saturn-tech.com, gurney_j@resnet.uoregon.edu, bsampley@bsampley.vip.best.com, current@FreeBSD.ORG Subject: Re: make world time???/ Message-ID: <199711131702.KAA01538@Ilsa.StevesCafe.com> In-Reply-To: Your message of "Wed, 12 Nov 1997 16:31:38 PST." <199711130031.QAA02936@ix.netcom.com>
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Hi,
> I don't understand how a simple build, 'make world > log.file' on a
> dual P-133 system with 3.0-current can take 7 hours when you are
> talking about 1.5 hours. Are we doing the same thing? Is there
> something wrong with my machine or setup? I made no changes to the
> files down-loaded, other than add network to /etc/group. Am I doing
> something wrong? There was little other activity on the machine.
> Fetchmail every 5 min.
>
> The time statements from log.file:
>
> --------------------------------------------------------------
> make world started on Mon Nov 10 10:20:31 PST 1997
> --------------------------------------------------------------
> ...
> --------------------------------------------------------------
> make world completed on Mon Nov 10 17:35:28 PST 1997
> --------------------------------------------------------------
On my very similar hardware:
GA586DX, 2 133MHz P5s, 2 older scsiII disks:
--------------------------------------------------------------
make world started on Fri Aug 15 01:45:01 MDT 1997
--------------------------------------------------------------
...
--------------------------------------------------------------
make world completed on Fri Aug 15 07:16:04 MDT 1997
--------------------------------------------------------------
19863.39s real 11352.56s user 8057.75s system
for a total of 5 hours, 31 minutes.
---
then same source, on my GA686DX, 2 200MHz P6s, 1 older 7200rpm disk:
--------------------------------------------------------------
make world started on Fri Aug 15 23:44:00 MDT 1997
--------------------------------------------------------------
...
--------------------------------------------------------------
make world completed on Sat Aug 16 02:58:58 MDT 1997
--------------------------------------------------------------
11698.66s real 4394.25s user 3963.56s system
for a total of 3 hours, 14 minutes
---
finally, on my Intel PR440FX, 2 200MHZ P6s, 2 7200rpm baracudas,
partitioned:
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/sd0a 63503 40437 17986 69% /
/dev/sd0s1h 1203775 459399 648074 41% /usr
/dev/sd0s1e 47599 1164 42628 3% /var
/dev/sd0f 349343 239201 82195 74% /usr/src
/dev/sd1g 190543 141891 33409 81% /usr/obj
--------------------------------------------------------------
make world started on Thu Aug 14 21:32:37 MDT 1997
--------------------------------------------------------------
...
--------------------------------------------------------------
make world completed on Thu Aug 14 23:58:00 MDT 1997
--------------------------------------------------------------
8723.42s real 4387.05s user 4031.71s system
for a total of 2 hours, 25 minutes
---
My guess is that your disk IO is the main diff between your 7hours and my
5hours
for similar hardware. Big wins are:
-pipe
/dev/sd0f on /usr/src (local, noatime)
^^^^^^^
/dev/sd1g on /usr/obj (asynchronous, local, noatime)
^^^^^^^^^^^^ ^^^^^^^
I believe all the above times are pre-parallelmake of the world. Although
somewhat old, they are the last set I have where all 3 systems built the
world at the same time.
There is a big gain when going from P5 to P6, about 2:1
--
Steve Passe | powered by
smp@csn.net | Symmetric MultiProcessor FreeBSD
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