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
next prev parent reply other threads:[~2021-08-06 13:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-05 10:19 Could it be made possible to offer "supplementary" data to a DIO write ? David Howells
2021-08-05 12:37 ` Matthew Wilcox
2021-08-05 13:07 ` David Howells
2021-08-05 13:35 ` Matthew Wilcox
2021-08-05 14:38 ` David Howells
2021-08-05 15:06 ` Matthew Wilcox
2021-08-05 15:38 ` David Howells
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]
2021-08-05 17:45 ` Could it be made possible to offer "supplementary" data to a DIO write ? Adam Borowski
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