[mythtv] Which filesystem?

[Monty Walls]

On Mon, 27 Jan 2003 11:08:01 -0800 (PST)
"Micah Morton" <micah at oregontech.net> wrote:

> XFS Isn't faster than EXT3, but it has been documented as being stable.
> EXT3 is in a constant state of development, where as XFS has been used
> consistantly by large corporations for 3 or 4 years now with good sucess.
> I am sorry to hear, however, that you had a problem with XFS. I have seen
> nothing but good from it.  However, XFS has been benchmarked (I'll find
> the site again) slightly higher than EXT3, ext2 had the highest, but isn't
> journaling. limiting it as an FS. However, its not my job to determine
> what kernel you people use.  I was simply stating what my experiences
> were.  Also note that different versions of your kernel can DRASTICALLY
> affect how much performance you gain/lose from a FS up/down-grade.
> 

What I noticed was that the overhead for journalling on ext3 with
a quasi-realtime task (vcr/myth) using a low-latency/preemption patched
kernel (using a AMD Athlon 2100XP, Symbios LVD scsi controller on to
a U2W 47mb/s Hitachi 10,000rpm drive) was causing drops due to writer task
not flushing frames fast enough.  But by changing to ext2 for the 
partition that the captures goto, I stopped having frame drops.

(kernel RH 7.3 2.4.18-5 + preemption+low-latency )

I've also tried it on ide with the later ide patches with much the 
same results.

My normal mount options were for ext3 = noatime,data=writeback
My normal mount options for ext2 = noatime

--
-Monty Walls (mwalls at castor.oktax.state.ok.us)
-	MIS, Oklahoma Tax Commission
-
- My opinions are my own, my employer knows nothing about it.