NetNews Usenet Archive 1993 #1/NN_1993_1.iso/spool/comp/protocol/nfs/3077

Internet Message Format | 1993-01-11 | 1.6 KB

Xref: sparky comp.protocols.nfs:3077 comp.sys.sun.hardware:6780
Newsgroups: comp.protocols.nfs,comp.sys.sun.hardware
Path: sparky!uunet!wupost!spool.mu.edu!yale.edu!ira.uka.de!sol.ctr.columbia.edu!eff!ckd
From: [e-mail] (Christopher Davis)
Subject: Re: Does a Prestoserve S-bus card improve local disk access too?
In-Reply-To: [e-mail]'s message of Thu, 24 Dec 1992 07:48:40 GMT
Message-ID: <[e-mail]>
Sender: [e-mail] (NNTP News Poster)
Nntp-Posting-Host: loiosh.eff.org
Organization: Electronic Frontier Foundation Tech Central
References: <[e-mail]>
Date: Mon, 11 Jan 1993 06:19:32 GMT
Lines: 19

SD> == Steve Dyer <[e-mail]>

 SD> I know that the Prestoserve board works to speed NFS writes by saving
 SD> the data to NVRAM and returning immediately to the client RPC, rather
 SD> than requiring the client process to block until the disk write
 SD> finishes.  I'm wondering if the support also speeds local operations
 SD> on the exported disks which are implicitly synchronous (at least with
 SD> the UFS file system).

Yes, and the same for unexported disks unless you configure it otherwise.

Note that unlink() is synchronous; /bin/rm -rf * runs REAL fast on a
PrestoServed machine.  Be even MORE careful than you used to be, because a
quick Ctrl-C may not save enough of your bacon.
--
Christopher K. Davis      | ``Usenet seems to run much like the Kif (or,
<[e-mail]>   EFF #14   |   for the TV generation, Klingon) high command.
System Administrator, EFF |   Whoever takes action and can be heard wins.''
[phone]  [CKD1]   |   --Peter da Silva <[e-mail]>