Date: Mon, 31 Jan 2005 14:31:37 -0500 From: Mike Tancsa <mike@sentex.net> To: noackjr@alumni.rice.edu Cc: freebsd-performance@freebsd.org Subject: Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion Message-ID: <6.2.1.2.0.20050131131350.0465d010@64.7.153.2> In-Reply-To: <57938.69.53.57.66.1107194753.squirrel@69.53.57.66> References: <6.2.0.14.0.20050127213817.02f19220@64.7.153.2> <Pine.NEB.3.96L.1050128095110.68140C-100000@fledge.watson.org> <6.2.0.14.0.20050128145435.098e3d48@64.7.153.2> <6.2.1.2.0.20050131101913.045736f8@64.7.153.2> <57938.69.53.57.66.1107194753.squirrel@69.53.57.66>
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At 01:05 PM 31/01/2005, Jon Noack wrote:
>Did you enable mpsafevfs on HEAD (as rwatson@ mentioned earlier in this
>thread)? If not, I would be very curious to see how it impacts
>performance. To enable it, set debug.mpsafevfs="1" in /boot/loader.conf
>and reboot (mpsafevm is required, but it is enabled by default).
Just re-ran them now. The seek value is kinda bogus as the machine has 2G
of RAM. I could not run larger files as LINUX does not allow for greater
than 2GB per file on ext3. If anything, postmark shows it to be slower,
bonnie about the same. Just running iozone and will try and get all those
together and post.
[nfs]# sysctl -a | grep mps
debug.mpsafevfs: 1
debug.mpsafenet: 1
debug.mpsafevm: 1
[nfs]#
Seeker 1...Seeker 3...Seeker 2...start 'em...done...done...done...
-------Sequential Output-------- ---Sequential Input--
--Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
--Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2000 35166 28.7 35349 8.3 13192 3.3 49662 46.5 67611 9.1
12250.0 22.8
[nfs]# time dd if=/dev/zero of=/mnt/test bs=16k count=2000
2000+0 records in
2000+0 records out
32768000 bytes transferred in 0.784260 secs (41782060 bytes/sec)
0.000u 0.056s 0:00.78 6.4% 24+206k 0+250io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=32k count=2000
2000+0 records in
2000+0 records out
65536000 bytes transferred in 1.664780 secs (39366159 bytes/sec)
0.000u 0.114s 0:01.67 6.5% 20+198k 1+500io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=64k count=2000
2000+0 records in
2000+0 records out
131072000 bytes transferred in 3.415590 secs (38374629 bytes/sec)
0.000u 0.232s 0:03.43 6.7% 25+332k 6+1000io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=128k count=2000
2000+0 records in
2000+0 records out
262144000 bytes transferred in 6.875836 secs (38125401 bytes/sec)
0.000u 0.486s 0:06.90 6.9% 24+465k 5+2000io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=256k count=2000
2000+0 records in
2000+0 records out
524288000 bytes transferred in 14.336948 secs (36569010 bytes/sec)
0.000u 0.958s 0:14.38 6.6% 27+858k 5+4000io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=512k count=2000
2000+0 records in
2000+0 records out
1048576000 bytes transferred in 28.392467 secs (36931486 bytes/sec)
0.008u 2.079s 0:28.47 7.2% 25+1412k 2+8000io 0pf+0w
[nfs]#
pm>set location /mnt
pm>set size 300 100000
pm>set transactions 400000
pm>run
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Time:
2846 seconds total
2846 seconds of transactions (140 per second)
Files:
200107 created (70 per second)
Creation alone: 500 files (500 per second)
Mixed with transactions: 199607 files (70 per second)
199905 read (70 per second)
199384 appended (70 per second)
200107 deleted (70 per second)
Deletion alone: 889 files (889 per second)
Mixed with transactions: 199218 files (69 per second)
Data:
12715.55 megabytes read (4.47 megabytes per second)
12728.92 megabytes written (4.47 megabytes per second)
pm>
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