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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
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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.
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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