On Wed, 16 Apr 2008, Bill Moran wrote:
bgwriter_delay = 10000ms # 10-10000ms between rounds
bgwriter_lru_maxpages = 1000 # 0-1000 max buffers written/round
Have you watched closely under load to ensure that you're not seeing a
huge performance hit every 10s when the bgwriter kicks off?
bgwriter_lru_maxpages = 1000 means that any background writer pass can
write at most 1000 pages = 8MB. Those are buffered writes going into the
OS cache, which it will write out at its own pace later. That isn't going
to cause a performance hit when it happens.
That isn't the real mystery though--where's the RAID5 rant I was expecting
from you?
--
* Greg Smith [EMAIL PROTECTED] http://www.gregsmith.com Baltimore, MD
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