Date: Sat, 10 Apr 2004 17:37:29 -0700 From: Jaye Mathisen <mrcpu@internetcds.com> To: "Brian F. Feldman" <green@freebsd.org> Cc: current@freebsd.org Subject: Re: Monumentally slow directory performance. Message-ID: <20040411003729.GB60706@backmaster.cdsnet.net> In-Reply-To: <200404101538.i3AFcZSu079448@green.homeunix.org> References: <20040409202236.GQ43765@backmaster.cdsnet.net> <200404101538.i3AFcZSu079448@green.homeunix.org>
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I know. if I start off with an empty dir, it goes really really fast
until I get around 2000-2500 or so. And then it just gets slower and
slower.
If it's samba, I have no idea what. I'm running a current samba,
pretty much the default config. On large files I see 12-13MB/second.
If my switch supported jumbo frames I'm sure it'd be even faster.
I'll do some of the tests from the command prompt, see if I see the same thing.
On Sat, Apr 10, 2004 at 11:38:35AM -0400, Brian F. Feldman wrote:
> Jaye Mathisen <mrcpu@internetcds.com> wrote:
> >
> >
> > Running a 5.2 supped as of 4/9.
> >
> > I have the UFS_DIRHASH stuff compiled into my kernel. Is there some other
> > frob to actually "turn" it on?
> >
> > I run softupdates, and moving files from my local box over gig ethernet to a directory
> > with 5000 files in it is moving about 1 file every 6-7 seconds.
> >
> > If I move the same files to an empty directory, they move so fast I can' even
> > read the names, which is more "normal".
> >
> > Even directories with 2500 or so files seem really, really, really, really slow.
> > at least for adding/removing.
> >
> > My FS is UFS2, on a 3ware RAID controller. I would love any ideas. smbd
> > is burning up 60-70% of the CPU, I've tried kernels with and without all
> > the witness/diagnostic and all that stuff.
>
> Burning up 60-70% of the CPU? Just writing a file every 6-7 seconds to a
> pretty small directory?
>
> {"/home/green"}$ ls Mail/current | wc -l
> 64109
> {"/home/green"}$ date; touch Mail/current/rand$RANDOM;\
> > date; touch Mail/current/rand$RANDOM; date
> Sat Apr 10 11:37:55 EDT 2004
> Sat Apr 10 11:37:55 EDT 2004
> Sat Apr 10 11:37:55 EDT 2004
>
> You should be getting "many" a second. Samba must be doing something wrong/
> stuck on something.
>
> --
> Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\
> <> green@FreeBSD.org \ The Power to Serve! \
> Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\
>
>
>
> !DSPAM:407814fe446531253994025!
>
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