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- Newsgroups: comp.unix.bsd
- Path: sparky!uunet!think.com!ames!agate!tfs.com!julian
- From: julian@tfs.com (Julian Elischer)
- Subject: IOZONE results (benchmarks in general)
- Message-ID: <1992Nov10.024031.9467@tfs.com>
- Organization: Trw Financial Systems
- Date: Tue, 10 Nov 1992 02:40:31 GMT
- Lines: 101
-
-
- Below are the results of an IOZONE auto.
- they are from the same hardware, without rebooting.
- they are from two different filesystems on the same disk.
- One is an 8k filesystem (/usr on ref.tfs.com) and the other
- is a 4kfilesystem (/usr/home on ref.tfs.com)
-
- notice that one gives about twice the performance of the other.
- notice also the effect of disk caching etc. on the figures for small
- files.(especially writes).
-
- This leads me to 2 conclusions:
- if not all information is given, benchmarks are dangerous.
-
- and
-
- my driver is not as slow as eoahmad said it was 8-)
-
- ** 8k filesystem **
- IOZONE: Performance Test of Sequential File I/O -- V1.14b (1/31/92)
- By Bill Norcott
-
- Operating System: POSIX 1003.1-1988
-
- IOZONE: auto-test mode
-
- MB reclen bytes/sec written bytes/sec read
- 1 512 1463129 1048576
- 1 1024 2330169 1014751
- 1 2048 3145728 1031386
- 1 4096 3700856 1014751
- 1 8192 4493897 1048576
- 2 512 1553446 1039910
- 2 1024 918461 1031386
- 2 2048 1039910 1031386
- 2 4096 1075463 1006633
- 2 8192 1175973 1031386
- 4 512 921825 1018859
- 4 1024 908514 1035631
- 4 2048 939023 1035631
- 4 4096 928628 1039910
- 4 8192 873813 1018859
- 8 512 1066348 1044225
- 8 1024 1052963 1012709
- 8 2048 920140 1044225
- 8 4096 998644 1044225
- 8 8192 1035631 1027176
- 16 512 957786 1012709
-
- ** 4k filesystem **
-
- IOZONE: Performance Test of Sequential File I/O -- V1.14b (1/31/92)
- By Bill Norcott
-
- Operating System: POSIX 1003.1-1988
-
- IOZONE: auto-test mode
-
- MB reclen bytes/sec written bytes/sec read
- 1 512 542367 495390
- 1 1024 676501 528694
- 1 2048 723156 524288
- 1 4096 767251 495390
- 1 8192 740171 411206
- 2 512 491520 365782
- 2 1024 467766 447790
- 2 2048 491520 526482
- 2 4096 469512 503316
- 2 8192 457560 526482
- 4 512 430185 470389
- 4 1024 429451 425818
- 4 2048 438429 452623
- 4 4096 425098 508400
- 4 8192 428719 514639
- 8 512 417690 513588
- 8 1024 461758 510981
- 8 2048 470389 514639
- 8 4096 466898 486296
- 8 8192 430922 510463
- 16 512 421362 506865
-
-
- machime :
- "Free technologies" 50MHz DX EISA motherboard. 16MB ram
- Bustek 742a scsi adapter
- 386bsd 0.1
- Seagate ST41651 SCSI disk drive.
- 4k filesystem tuning unknown
- 8k filesystem tuned with tunefs for 1ms delay.
-
- Note: this hardware runs a LITTLE faster (I think) under MACH 2.6
- (same hardware.. results later maybe)
- MACH can get 2MB/sec to a ST42400 2GB drive and about 1.2MB/sec
- to this drive.
-
- +----------------------------------+ ______ _ __
- | __--_|\ Julian Elischer | \ U \/ / On assignment
- | / \ julian@tfs.com +------>x USA \ in a very strange
- | ( OZ ) 2118 Milvia st. Berkeley CA. \___ ___ | country !
- +- X_.---._/ USA+(510) 704-3137(wk) \_/ \\
- v
-