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- Newsgroups: comp.unix.bsd
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- From: mad@math.keio.ac.jp (MAEDA Atusi)
- Subject: Re: bonnie i/o test results
- In-Reply-To: eoahmad@ntuix.ntu.ac.sg's message of Sun, 8 Nov 1992 15: 26:11 GMT
- Message-ID: <MAD.92Nov9195616@amber.math.keio.ac.jp>
- Lines: 92
- Sender: news@math.keio.ac.jp
- Nntp-Posting-Host: amber
- Reply-To: mad@math.keio.ac.jp
- Organization: Faculty of Sci. and Tech., Keio Univ., Yokohama, Japan.
- References: <CGD.92Nov6232822@eden.CS.Berkeley.EDU>
- <1992Nov8.152611.26176@ntuix.ntu.ac.sg>
- Date: Mon, 9 Nov 1992 10:56:19 GMT
-
- Sorry for those who are bored with disk benchmark stuff. This is
- (hopefully) my last article about on this topic.
-
- In article <1992Nov8.152611.26176@ntuix.ntu.ac.sg> eoahmad@ntuix.ntu.ac.sg (Othman Ahmad) writes:
-
- >Chris G. Demetriou (cgd@eden.CS.Berkeley.EDU) wrote:
-
- >: PLEASE, before posting any more benchmarks:
- >: (1) learn about disk architecture.
-
- At least, no one now dare to say "take away buffer cache from Unix fs".
- A progress (somehow).
-
- In article <1992Nov8.152611.26176@ntuix.ntu.ac.sg> eoahmad@ntuix.ntu.ac.sg (Othman Ahmad) writes:
-
- >No benchmark is perfect but at least we have figures. I'm fed up of people
- >who only say but do not produce any figure. Those who say the most does not
- >mean that they are right.
- [..deleted..]
- > Some e-mail me in saying that he can get 5Mbyte/second. It is faster
- >than any workstation that I've tested. However I do not trust it so much
- >until he posts the complete test details.
-
- Ok, ok, here's figures. I would not claim ANY conclusions. JUST figures.
-
- System: PC Direct 486dxe
- CPU: 486DX/33MHz
- Cache: 256K 25ns
- RAM: 8MB 70ns
- Controller: Noname IDE
- DISK: Alps HD-A312C (200M IDE, 12ms)
- OS: Linux 0.98pl3
- Minix fs
-
- Result of `iozone auto' from console (single user, no active background tasks).
-
-
- IOZONE: Performance Test of Sequential File I/O -- V1.15 (5/1/92)
- By Bill Norcott
-
- Operating System: POSIX 1003.1-1988
-
- IOZONE: auto-test mode
-
- MB reclen bytes/sec written bytes/sec read
- 1 512 1777247 4032984
- 1 1024 2139951 4993219
- 1 2048 2231012 5518821
- 1 4096 2231012 5825422
- 1 8192 2231012 5825422
- 2 512 1613193 3813003
- 2 1024 1855886 4877097
- 2 2048 1906501 5377312
- 2 4096 1923992 5518821
- 2 8192 1941807 5518821
- 4 512 1421797 3554494
- 4 1024 1547713 4712701
- 4 2048 1625699 5053378
- 4 4096 1638400 5178153
- 4 8192 1632024 5309245
- 8 512 554435 59692
- 8 1024 559613 60271
- 8 2048 715751 113038
- 8 4096 1026757 192885
- 8 8192 562616 227025
- 16 512 509171 59741
- 16 1024 536184 61749
- 16 2048 563750 105570
- 16 4096 562239 183578
- 16 8192 568912 265294
- Completed series of tests
-
- Now you can see the reason why I said "1MB is meaningless if you want
- to measure disk performance". In previous article, I (naively)
- assumed this also holds on 386bsd. 265KB/s reading rate looks too
- slow, but that's another story (I woudn't try to discuss here).
-
- And `free' command just after the test prints:
-
- total used cache free shared
- memory: 7376 908 6388 80 304
- swap0: 8268 0 8268 0
-
-
- It means 6388 1k-pages are allocated for buffer cache.
-
- ;;; Benchmarking without analysis
- ;;; is as useless as analysis
- ;;; without benchmarking.
- ;;;
- ;;; MAEDA Atusi (In Japan we write our family names first.)
- ;;; mad@math.keio.ac.jp
-