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Unread 12-10-2006, 02:01 PM   #6
blue68f100
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Join Date: Jul 2005
Location: Plano, TX
Posts: 3,135
Default Re: Comparing transfer rates with different RAM amounts

100baseT has a max 12.5 Meg/sec, theory. In real world standings I've only seen a max of ~9-10 M/s using SMB (MS drag and drop). FTP can be closer to 11 M/s. I seam to only get around 8M/s (smb).

Would not touch the raid strip size at all.

Ram usage: If you have JVM loaded it by default it will take 25% of total ram, with a min of 25meg. This is the reason for a min of 128meg. If not running JVM you can use up to 50% of your ram for raid cache.

Quote:
config raid cache size (set raid cache size in MB)
threads count (set raid thread count)
The "config raid cache" will report what is being used. My 2200 in raid 1 reports 0 for raid cache. But it has only has 64meg on ram, and can not be upgraded like the 2000. If I recall bsd (unix) will only start up demons as needed. So some testing will be needed to get the best performance. This may only be available for 4x00 (raid5) capable units. Because the data array is 1 drive (mirrored).

The threads can be increased if you have a lot of users, or handling a lot of small files.

But I do not recall if it retains the setting.

Douglas may have some comments or insite on this.
__________________
1 Snap 4500 - 1.0T (4 x 250gig WD2500SB RE), Raid5,
1 Snap 4500 - 1.6T (4 x 400gig Seagates), Raid5,
1 Snap 4200 - 4.0T (4 x 2gig Seagates), Raid5, Using SATA converts from Andy

Link to SnapOS FAQ's http://forums.procooling.com/vbb/showthread.php?t=13820
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