Date: Wed, 9 Feb 2005 00:25:42 -0400 (AST) From: "Marc G. Fournier" <scrappy@hub.org> To: Greg 'groggy' Lehey <grog@FreeBSD.org> Cc: freebsd-questions@freebsd.org Subject: Re: vinum in 4.x poor performer? Message-ID: <20050209002232.B94338@ganymede.hub.org> In-Reply-To: <20050209034624.GN28715@wantadilla.lemis.com> References: <20050208231208.B94338@ganymede.hub.org> <20050209034624.GN28715@wantadilla.lemis.com>
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On Wed, 9 Feb 2005, Greg 'groggy' Lehey wrote:
> On Tuesday, 8 February 2005 at 23:21:54 -0400, Marc G. Fournier wrote:
>>
>> I have a Dual-Xeon server with 4G of RAM, with its primary file system
>> consisting of 4x73G SCSI drives running RAID5 using vinum ... the
>> operating system is currently FreeBSD 4.10-STABLE #1: Fri Oct 22 15:06:55
>> ADT 2004 ... swap usage is 0% (6149) ... and it performs worse then any of
>> my other servers, and I have less running on it then the other servers ...
>>
>> I also have HTT disabled on this server ... and softupdates enabled on the
>> file system ...
>>
>> That said ... am I hitting limits of software raid or is there something I
>> should be looking at as far as performance is concerned? Maybe something
>> I have misconfigured?
>
> Based on what you've said, it's impossible to tell. Details would be
> handy.
Like? I'm not sure what would be useful for this one ... I just sent in
my current drive config ... something else useful?
systat -v output help:
4 users Load 4.64 5.58 5.77 Feb 9 00:24
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 1904768 137288 3091620 381128 159276 count
All 3850780 221996 1078752 605460 pages
7921 zfod Interrupts
Proc:r p d s w Csw Trp Sys Int Sof Flt 242 cow 681 total
24 9282 949 8414***** 678 349 8198 566916 wire ahd0 irq16
2527420 act 67 ahd1 irq17
54.6%Sys 0.2%Intr 45.2%User 0.0%Nice 0.0%Idl 608208 inact 157 em0 irq18
| | | | | | | | | | 146620 cache 200 clk irq0
===========================>>>>>>>>>>>>>>>>>>>>> 12656 free 257 rtc irq8
daefr
Namei Name-cache Dir-cache 7363 prcfr
Calls hits % hits % react
46106 46005 100 13 0 pdwake
pdpgs
Disks da0 da1 da2 da3 da4 pass0 pass1 intrn
KB/t 5.32 9.50 12.52 16.00 9.00 0.00 0.00 204096 buf
tps 23 2 4 3 1 0 0 1610 dirtybuf
MB/s 0.12 0.01 0.05 0.04 0.01 0.00 0.00 512000 desiredvnodes
% busy 3 1 1 1 0 0 0 397436 numvnodes
166179 freevnodes
Drives da1 -> da4 are used on the vinum array da0 is just the system drive
...
----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664
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