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Date:      Tue, 12 Feb 2013 13:11:12 +0100
From:      CeDeROM <cederom@tlen.pl>
To:        =?UTF-8?Q?Bernhard_Fr=C3=B6hlich?= <decke@freebsd.org>
Cc:        freebsd-emulation@freebsd.org, freebsd-stable@freebsd.org
Subject:   Re: 9.1 AMD64 multitasking efficiency low
Message-ID:  <CAFYkXjkQMsEP5kgwOv324adGAVXa6n_6L3_aGqJnrpBrWFKRsw@mail.gmail.com>
In-Reply-To: <CAFYkXjk-k%2BkscQs3JZO-CHGuYwDaXBGWv-rLuuaXrewbgGVdKQ@mail.gmail.com>
References:  <CAFYkXjkACs=2RaCb_BaoNT6PM%2B5gkQSGoKP5G4bR_284v_Eoig@mail.gmail.com> <CAE-m3X3KvNsb7AbQ_yRXEmyisFZ44Qdp4_xFv7HcJ%2BqjgJ0tQg@mail.gmail.com> <CAFYkXjm9Oa4T_7a=o2rkogj7CYfOPHbx6EjyucBp6phvB5WrPA@mail.gmail.com> <CAE-m3X0OpWxvxUv1tBYQu-XBDNw%2BD9UMej3p8niNJicUN8U2_w@mail.gmail.com> <CAFYkXjmXhPLempgUQsPynUwZizW-QShXoD1oGddT2x%2BFY6wN0w@mail.gmail.com> <CAFYkXjk-k%2BkscQs3JZO-CHGuYwDaXBGWv-rLuuaXrewbgGVdKQ@mail.gmail.com>

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On Mon, Feb 11, 2013 at 11:35 PM, CeDeROM <cederom@tlen.pl> wrote:
> I can work on VESA xorg driver, I can have no multimedia drivers, but
> the system performance is really important factor for me and working
> like this is really unpleasant on a pretty modern machine :-(

I made a short movie to show how bad this looks :-) After some time of
moving data from ext2 sata partition to ufs2 usb partition I have
started Xorg, the speed is a disaster, then I have shutdown the Xorg,
stopped file transfer and starter Xorg again, things were okay, then
started transfer again and things get worse and worse again...

http://youtu.be/5pLODViX3JY

Now when all of the data are back on the sata drive with UFS2 things
seems a lot better. Do you think this may be the EXT2 issue? Still
when swap starts working there is a slowdown to the whole system.

What are recommended flags to build the kernel for efficiency?

Does debug symbols in kernel can slow things down?

Any hints welcome! :-)
Tomek

-- 
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info



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