Re: DB logging (was: Problem with the numbers I reported yesterday) - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: DB logging (was: Problem with the numbers I reported yesterday)
Date
Msg-id 199802170315.WAA17854@candle.pha.pa.us
Whole thread Raw
In response to Re: DB logging (was: Problem with the numbers I reported yesterday)  (ocie@paracel.com)
Responses Re: DB logging (was: Problem with the numbers I reported yesterday)  (ocie@paracel.com)
List pgsql-hackers
> What exactly do you mean by "raw devices" that it is not offered by
> Linux?  If I take a partition of one of my hard drives and I don't
> make a filesystem on it, I can perform reads and writes on the "raw
> device" /dev/hd?? or /dev/sd??  I didn't think these writes were
> buffered (if that's what you're referring to), but I could be wrong.

Your /dev/hd* goes through the the buffer cache, the raw versions
/dev/rhd* does not.

--
Bruce Momjian
maillist@candle.pha.pa.us

pgsql-hackers by date:

Previous
From: ocie@paracel.com
Date:
Subject: Re: DB logging (was: Problem with the numbers I reported yesterday)
Next
From: "Vadim B. Mikheev"
Date:
Subject: Re: Subselects open issue Nr. NEW