From: David Howells <dhowells@redhat.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: dhowells@redhat.com, Anna Schumaker <anna.schumaker@netapp.com>,
Trond Myklebust <trond.myklebust@hammerspace.com>,
Jeff Layton <jlayton@redhat.com>,
Steve French <sfrench@samba.org>,
Dominique Martinet <asmadeus@codewreck.org>,
Mike Marshall <hubcap@omnibond.com>,
Miklos Szeredi <miklos@szeredi.hu>,
Shyam Prasad N <nspmangalore@gmail.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-cachefs@redhat.com, linux-afs@lists.infradead.org,
linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org,
ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net,
devel@lists.orangefs.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Canvassing for network filesystem write size vs page size
Date: Fri, 06 Aug 2021 14:44:48 +0100 [thread overview]
Message-ID: <1302765.1628257488@warthog.procyon.org.uk> (raw)
In-Reply-To: <YQx4lx7vEbvmfBnE@casper.infradead.org>
Matthew Wilcox <willy@infradead.org> wrote:
> Filesystems should not make an assumption about this ... I suspect
> the optimum page size scales with I/O bandwidth; taking PCI bandwidth
> as a reasonable proxy, it's doubled five times in twenty years.
There are a lot more factors than you make out. Local caching, content
crypto, transport crypto, cost of setting up RPC calls, compounding calls to
multiple servers.
David
prev parent reply other threads:[~2021-08-06 13:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <YQv+iwmhhZJ+/ndc@casper.infradead.org>
[not found] ` <YQvpDP/tdkG4MMGs@casper.infradead.org>
[not found] ` <YQvbiCubotHz6cN7@casper.infradead.org>
[not found] ` <1017390.1628158757@warthog.procyon.org.uk>
[not found] ` <1170464.1628168823@warthog.procyon.org.uk>
[not found] ` <1186271.1628174281@warthog.procyon.org.uk>
2021-08-05 16:35 ` Canvassing for network filesystem write size vs page size David Howells
2021-08-05 17:27 ` Linus Torvalds
2021-08-05 17:43 ` Trond Myklebust
2021-08-05 22:11 ` Matthew Wilcox
2021-08-06 13:42 ` David Howells
2021-08-06 14:17 ` Matthew Wilcox
2021-08-06 15:04 ` David Howells
2021-08-05 17:52 ` Adam Borowski
2021-08-05 18:50 ` Jeff Layton
2021-08-05 23:47 ` Matthew Wilcox
2021-08-06 13:44 ` David Howells [this message]
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