Date: Sat, 6 May 2000 10:10:19 -0400 (EDT) From: Zhihui Zhang <zzhang@cs.binghamton.edu> To: Craig Wilson <craig@natsoft.com.au> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: SLOW DIRECTORY LOOKUPS Message-ID: <Pine.SOL.4.21.0005061007440.4855-100000@sol.cs.binghamton.edu> In-Reply-To: <3913998E.2CD4@natsoft.com.au>
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On Sat, 6 May 2000, Craig Wilson wrote:
> I have a stange problem on one of my FreeBSD 2.2.7 servers with
> a DPT SMART RAID IV controller where directory scans are very slow
> ie
> opendir(".");
> with repeated readdir()'s with 5000 files in the directory
> it takes 15 seconds to read this directory 70 times,
> where on our other FreeBSD 2.2.2 & 2.2.6 machines this takes less
> than 1 second.
>
> The machine was performing ok, does anyone know what may have
> caused this.
>
Directory operations are inherently slow due to the design of FFS (now
called ufs). But since you are comparing two versions of FreeBSD, I have
no idea. Are they running on the same hardware configuration? Were the
filesystems created in the same way?
-Zhihui
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