Date: Fri, 28 Jan 2005 15:02:23 -0500 From: Mike Tancsa <mike@sentex.net> To: Robert Watson <rwatson@freebsd.org> Cc: freebsd-performance@freebsd.org Subject: Re: FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion Message-ID: <6.2.0.14.0.20050128145435.098e3d48@64.7.153.2> In-Reply-To: <Pine.NEB.3.96L.1050128095110.68140C-100000@fledge.watson.o rg> References: <6.2.0.14.0.20050127213817.02f19220@64.7.153.2> <Pine.NEB.3.96L.1050128095110.68140C-100000@fledge.watson.org>
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At 04:52 AM 28/01/2005, Robert Watson wrote:
>Just to get started, using dd to read and write at various block sizes is
>probably a decent start. Take a few samples, make sure there's a decent
>sample size, etc, and don't count the first couple of runs.
I started over and installed the OS on a separate drive, so that the RAID5
partition was one big partition. Bonnie seems fairly equal on the 2
platforms. I am just putting together all the IOZONE tests as well which I
will post later tonight / over the weekend.
-------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
F 2000 33789 25.8 34065 8.3 14038 3.8 47484 44.6 67316 9.5
2873.7 5.7
L 2000 28073 62.0 22391 4.3 12189 2.0 17577 35.5 102132 5.5
1853.7 2.5
F=RELENG_5
L=2.6.10 LINUX
However, on the postmark tests, there seems to be quite a bit more difference.
RELENG_5 #2
[nfs]# time dd if=/dev/zero of=/mnt/test bs=16k count=2000
32768000 bytes transferred in 0.724865 secs (45205661 bytes/sec)
0.000u 0.066s 0:00.73 8.2% 33+281k 0+250io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=32k count=2000
65536000 bytes transferred in 1.731888 secs (37840788 bytes/sec)
0.000u 0.122s 0:01.74 6.8% 28+283k 0+500io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=64k count=2000
131072000 bytes transferred in 3.131403 secs (41857273 bytes/sec)
0.000u 0.245s 0:03.14 7.6% 25+335k 0+1000io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=128k count=2000
262144000 bytes transferred in 6.973014 secs (37594073 bytes/sec)
0.000u 0.509s 0:07.00 7.1% 26+510k 0+2000io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=256k count=2000
524288000 bytes transferred in 14.253915 secs (36782035 bytes/sec)
0.000u 1.003s 0:14.30 6.9% 25+784k 0+4000io 0pf+0w
[nfs]# time dd if=/dev/zero of=/mnt/test bs=512k count=2000
1048576000 bytes transferred in 28.135716 secs (37268502 bytes/sec)
0.008u 2.165s 0:28.21 7.6% 24+1386k 0+8000io 0pf+0w
[nfs]#
LINUX 2.6.10
pm>set size 300 100000
pm>set location /mnt
pm>set transactions 400000
pm>run
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Time:
1504 seconds total
1503 seconds of transactions (266 per second)
Files:
200107 created (133 per second)
Creation alone: 500 files (500 per second)
Mixed with transactions: 199607 files (132 per second)
199905 read (133 per second)
199384 appended (132 per second)
200107 deleted (133 per second)
Deletion alone: 889 files (889 per second)
Mixed with transactions: 199218 files (132 per second)
Data:
12715.55 megabytes read (8.45 megabytes per second)
12728.92 megabytes written (8.46 megabytes per second)
pm>
RELENG_5.
PostMark v1.5 : 3/27/01
pm>set location /mnt
pm>size 300 100000
Eh?
pm>set size 300 100000
pm>set location /mnt
pm>set transactions 400000
pm>run
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Time:
2490 seconds total
2487 seconds of transactions (160 per second)
Files:
200107 created (80 per second)
Creation alone: 500 files (500 per second)
Mixed with transactions: 199607 files (80 per second)
199905 read (80 per second)
199384 appended (80 per second)
200107 deleted (80 per second)
Deletion alone: 889 files (444 per second)
Mixed with transactions: 199218 files (80 per second)
Data:
12715.55 megabytes read (5.11 megabytes per second)
12728.92 megabytes written (5.11 megabytes per second)
pm>
RELENG_4 (Note, this was on a different partition on the RAID5 card
pm>set size 300 100000
pm>set location /card0-a
pm>set transactions 400000
pm>run
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Time:
1219 seconds total
1219 seconds of transactions (328 per second)
Files:
200107 created (164 per second)
Creation alone: 500 files (500 per second)
Mixed with transactions: 199607 files (163 per second)
199905 read (163 per second)
199384 appended (163 per second)
200107 deleted (164 per second)
Deletion alone: 889 files (889 per second)
Mixed with transactions: 199218 files (163 per second)
Data:
12715.55 megabytes read (10.43 megabytes per second)
12728.92 megabytes written (10.44 megabytes per second)
pm>
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