Date: Sun, 02 Jan 2000 02:16:34 -0800 From: R Joseph Wright <rjoseph@nwlink.com> To: Kent Stewart <kstewart@3-cities.com>, freebsd-questions@FreeBSD.org Subject: Re: some performance issues Message-ID: <386F2582.E5910672@nwlink.com> References: <386C023E.680FC31@inna.net> <386C0676.F39EC477@3-cities.com> <386C2354.ABD1ED54@nwlink.com> <386C3173.1D695393@3-cities.com> <386C543D.6E59C9DF@nwlink.com> <19991231104441.C2609@emu.sourcee.com> <386CE8AB.29A140B5@nwlink.com> <386CF9DC.B71A9887@3-cities.com> <386D3D3C.C92D02A3@nwlink.com> <386D5C88.B8257D45@3-cities.com> <386D8ABD.C2894A91@nwlink.com> <386D9271.C3B7DD95@3-cities.com>
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Kent Stewart wrote: > > R Joseph Wright wrote: > > > > > > I recompiled my kernel and changed the flags from 0x80ff80ff to > > > > 0xa0ffa0ff. What is a good program to use to see if I can really tell a > > > > difference? I tried out some of my bigger programs like star office and > > > > gimp. Star Office still took a little while to load, gimp seemed to fly > > > > (when it wasn't crashing). > > > > > > I use "iozone -s 160m" because I have 128MB of memory. The size of the > > > file needs to be larger than memory so you aren't benchmarking the > > > cache. You can find it in the packages/benchmark area of the CDROM. > > > > > > Kent > > > > Kent, I tried that, only for me it worked doing "iozone 160". Here is > > my results: > > > > 11483869 bytes/second for reading > > 15155142 bytes/second for writing > > > > Is that really slow? It's nowhere near 33MB/second. I have a Maxtor > > 7000rpm with UDMA66 capabilities, although I'll have to wait for -STABLE > > to support that, and a new motherboard as well. I may recompile with > > the old flags just to see the difference. > > > > What you will see with the old flags is probably 6-7MB/s. Remember > that UDMA66 is the rate that the buffer transfers data. The continuous > rate off of the HD is MUCH less :). I think the lvd IBM Scsi's are > rated at 20.2MB/s continuous and not the 80MB/s of the interface. > > Kent I didn't have to rebuild with the old flags, I just rebooted the old one. The results were noticeably lower: 8918121 bytes/second read 10599623 bytes/second write I looked back in the book and saw another option, 0x1000 for LBA addressing. So, I recompiled with flags 0xb0ffb0ff. Here are the results for that: 11652108 bytes/second read 15219586 bytes/second write Slightly higher than with 0xa0ffa0ff. I'm getting the hang of this. > > > Happy New Year (why am I sitting at this computer 8-) )! > > Well, if it makes you feel better, there are two of us doing the same > thing. I hit my first 2000 problem. I wanted to do an update from > today's Stock Market with Quicken 99 and I suddenly had 3 accounts > that were each worth $10-40M US. Something overflowed. The smallest > account was the one that jumped to $40M. The system was quickly > restored from the last backup and now I'm installing Quicken 2000. > People believe stuff like this. All I could do was chuckle. It is also > the first time I ran Quicken since I upgraded to Windows 2000 gold. I just had my first y2k problem too. After eating too much celebratory ben&jerry's ice cream last night, I proceeded to delete the contents of my /usr/bin directory. I tried a number of things like just going in to /usr/src/usr.bin and doing 'make'. I didn't have 'make' anymore. Luckily, I had an unused partition on my hard drive. I decided to install a 4.0 snapshot from a cdrom onto it. From there, I mounted my -STABLE /usr and copied the contents from the 4.0 /usr/bin into the -STABLE. Then I rebooted the -STABLE, and tried to remake the /usr/bin directory again using the -STABLE sources. I got an error message that said something like "This isn't NetBSD. You lose!" I thought that was cruel. So I cvsup'ed the latest -STABLE sources again and did make world, just to make sure everything was just right. Now it's working beautifully. I knew I could fix it without reinstalling! > > I did watch some of the stuff in Times Square in NY. In Washington > State, they cancelled a cellebration around the Space Needle because > they caught terrorist's coming in to WA from Canada. That part is > enough to keep you home on the computer :). > > Kent I actually live in downtown Seattle and had a beautiful view of the fireworks at the Space Needle from my roof. I guess they only cancelled allowing people in to Seattle Center to get a real close-up view. The most amazing thing though, was the sound of people cheering from all directions and cars honking for many minutes nonstop. That was pretty darn cool. Joseph > -- > Kent Stewart > Richland, WA > > mailto:kstewart@3-cities.com > http://www.3-cities.com/~kstewart/index.html > FreeBSD News http://daily.daemonnews.org/ > > SETI(Search for Extraterrestrial Intelligence) @ HOME > http://setiathome.ssl.berkeley.edu/ > > Hunting Archibald Stewart, b 1802 in Ballymena, Antrim Co., NIR > http://www.3-cities.com/~kstewart/genealogy/archibald_stewart.html -- You will do foolish things, but do them with enthusiasm. Colette. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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