From: Bruce Fields <bfields@fieldses.org>
To: dai.ngo@oracle.com
Cc: Chuck Lever III <chuck.lever@oracle.com>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH RFC v5 0/2] nfsd: Initial implementation of NFSv4 Courteous Server
Date: Wed, 1 Dec 2021 13:03:39 -0500 [thread overview]
Message-ID: <20211201180339.GC26415@fieldses.org> (raw)
In-Reply-To: <20211201174205.GB26415@fieldses.org>
On Wed, Dec 01, 2021 at 12:42:05PM -0500, Bruce Fields wrote:
> On Wed, Dec 01, 2021 at 09:36:30AM -0500, Bruce Fields wrote:
> > OK, good to know. It'd be interesting to dig into where nfsdcltrack is
> > spending its time, which we could do by replacing it with a wrapper that
> > runs the real nfsdcltrack under strace.
> >
> > Though maybe it'd be better to do this on a system using nfsdcld, since
> > that's what we're transitioning to.
>
> Trying that on a test VM here, I see each upcall doing 3 fdatasyncs() of
> an sqlite-journal file. On my setup, each of those is taking a few
> milliseconds. I wonder if it an do better.
If I understand the sqlite documentation correctly, I *think* that if we
use journal_mode WAL with synchronous FULL, we should get the assurances
nfsd needs with one sync per transaction.
--b.
next prev parent reply other threads:[~2021-12-01 18:03 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-29 0:56 [PATCH RFC v5 0/2] nfsd: Initial implementation of NFSv4 Courteous Server Dai Ngo
2021-09-29 0:56 ` [PATCH RFC v5 1/2] fs/lock: add new callback, lm_expire_lock, to lock_manager_operations Dai Ngo
2021-09-29 0:56 ` [PATCH RFC v5 2/2] nfsd: Initial implementation of NFSv4 Courteous Server Dai Ngo
2021-10-01 20:53 ` [PATCH RFC v5 0/2] " J. Bruce Fields
2021-10-01 21:41 ` dai.ngo
2021-10-01 23:03 ` J. Bruce Fields
2021-11-16 23:06 ` dai.ngo
2021-11-17 14:14 ` J. Bruce Fields
2021-11-17 17:59 ` dai.ngo
2021-11-17 21:46 ` dai.ngo
2021-11-18 0:34 ` J. Bruce Fields
2021-11-22 3:04 ` dai.ngo
2021-11-29 17:13 ` dai.ngo
2021-11-29 17:30 ` J. Bruce Fields
2021-11-29 18:32 ` dai.ngo
2021-11-29 19:03 ` Chuck Lever III
2021-11-29 19:13 ` Bruce Fields
2021-11-29 19:39 ` dai.ngo
2021-11-29 19:36 ` dai.ngo
2021-11-29 21:01 ` dai.ngo
2021-11-29 21:10 ` Chuck Lever III
2021-11-30 0:11 ` dai.ngo
2021-11-30 1:42 ` Chuck Lever III
2021-11-30 4:08 ` Trond Myklebust
2021-11-30 4:47 ` Chuck Lever III
2021-11-30 4:57 ` Trond Myklebust
2021-11-30 7:22 ` dai.ngo
2021-11-30 13:37 ` Trond Myklebust
2021-12-01 3:52 ` dai.ngo
2021-12-01 14:19 ` bfields
2021-11-30 15:36 ` Chuck Lever III
2021-11-30 16:05 ` Bruce Fields
2021-11-30 16:14 ` Trond Myklebust
2021-11-30 19:01 ` bfields
2021-11-30 7:13 ` dai.ngo
2021-11-30 15:32 ` Bruce Fields
2021-12-01 3:50 ` dai.ngo
2021-12-01 14:36 ` Bruce Fields
2021-12-01 14:51 ` Bruce Fields
2021-12-01 18:47 ` dai.ngo
2021-12-01 19:25 ` Bruce Fields
2021-12-02 17:53 ` Chuck Lever III
2021-12-01 17:42 ` Bruce Fields
2021-12-01 18:03 ` Bruce Fields [this message]
2021-12-01 19:50 ` Bruce Fields
2021-12-03 21:22 ` Bruce Fields
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