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At 10:07 10-2-2002 -0500, Roger wrote:
>ef8b47d.jpg Best Logfile size for
>XFS.ems<file://c:\stuff\eudora\attach\Best Logfile size for XFS.ems
><0880.0002>>
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>
>*** PGP Signature Status: good
>*** Signer: Roger <rogerz@xxxxxxxxxxxx> (Invalid)
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>
>ok. saw something in the archives about logfile size asked within the
>past 2 days but it really didn't give any clues to this question.
>
>As the FAQ states, specifing an alternate logfile size (and also other
>options) at the time of mkfs, can increase performance.
>
>here's a quick layout of my partitions on (using an add-on Promise
>Ultra100 ide controller card):
>
>Filesystem Size Used Avail Use% Mounted on
>/dev/hde1 576M 69M 507M 12% /
>/dev/hde5 4.3G 2.3G 2.0G 53% /home
>/dev/hde6 207M 280k 206M 1% /tmp
>/dev/hde7 3.0G 2.5G 571M 82% /usr
>/dev/hde8 787M 84M 704M 11% /var
>/dev/hdf5 6.2G 2.8G 3.4G 45% /usr/src/RPM
>/dev/hdg6 16G 14G 3.3G 80% /mnt/win_c2
>/dev/hdg5 21G 33M 19G 1% /extra1
>/dev/hdf6 3.4G 3.3G 165M 96% /mnt/win_d2
>
>I'm mainly concerned about /dev/hdg5 (/extra1). I'm using it for video
>capturing and am curious as to optimizing it for write performance.
>
>Logfile size recommendations? other options?
A large logfile size will not help that much. Having a larger log helps a
lot when you touch a lot of smaller files many times.
If you are writing large files the default log will suffice nicely which is
8MB large afaik. The largest you can go is 32768 == 32 MB.
You can also mount with logbufs=4 or 8 which means that more updates are
journaled but you lose more of them during a crash. This has the same
effect as making the log bigger which means there can be more updates going
on at one time.
Cheers
- --
Seth
Every program has two purposes one for which
it was written and another for which it wasn't
I use the last kind.
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