From: Marc Eshel <eshel.marc@gmail.com>
To: "Mkrtchyan, Tigran" <tigran.mkrtchyan@desy.de>
Cc: Olga Kornievskaia <aglo@umich.edu>,
schumaker anna <schumaker.anna@gmail.com>,
linux-nfs <linux-nfs@vger.kernel.org>,
Trond Myklebust <trondmy@hammerspace.com>
Subject: Re: NFS client to pNFS DS
Date: Tue, 10 Sep 2024 22:54:42 -0700 [thread overview]
Message-ID: <4c90da07-6de7-4158-ae8b-5eba1d39e367@gmail.com> (raw)
In-Reply-To: <2102290340.59910889.1725952999821.JavaMail.zimbra@desy.de>
Hi Tigran,
Thank you for the information, but still why there are more 512K reads
than 1M, I see now about 5 reads of size 512K for every 1M read.
Marc.
On 9/10/24 12:23 AM, Mkrtchyan, Tigran wrote:
> Hi Marc,
>
> AFAIK, 1M is the max IO size that linux nfs client will use.
>
> linux/nfs_xdr.h:#define NFS_MAX_FILE_IO_SIZE (1048576U)
>
> Best regards,
> Tigran.
>
> ----- Original Message -----
>> From: "marc eshel" <eshel.marc@gmail.com>
>> To: "Tigran Mkrtchyan" <tigran.mkrtchyan@desy.de>, "Olga Kornievskaia" <aglo@umich.edu>
>> Cc: "schumaker anna" <schumaker.anna@gmail.com>, "linux-nfs" <linux-nfs@vger.kernel.org>, "Trond Myklebust"
>> <trondmy@hammerspace.com>
>> Sent: Tuesday, 10 September, 2024 01:23:43
>> Subject: Re: NFS client to pNFS DS
>> Can someone explain why the NFS client is reading 1M followed by 2 reads
>> of 1/2M and repeats this pattern. For pNFS or NFS4.
>>
>> The mount was for 4M rsize=4194304.
>>
>> Thanks, Marc.
next prev parent reply other threads:[~2024-09-11 5:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <c4f1d8bf-745b-4a98-9d38-2da4c355d691@gmail.com>
2024-07-29 21:56 ` NFS client failure marc eshel
2024-08-05 21:51 ` NFS client to pNFS DS marc eshel
2024-08-08 14:22 ` Anna Schumaker
2024-08-08 22:07 ` Olga Kornievskaia
2024-08-09 13:06 ` Anna Schumaker
2024-08-09 14:29 ` marc eshel
[not found] ` <8ab0fd49-0c90-42bd-a34e-9dcf63a99bd5@gmail.com>
2024-08-09 15:15 ` Olga Kornievskaia
2024-08-09 16:26 ` marc eshel
2024-08-10 21:20 ` Olga Kornievskaia
2024-08-11 19:41 ` Mkrtchyan, Tigran
2024-08-11 19:50 ` marc eshel
2024-08-12 6:52 ` Mkrtchyan, Tigran
2024-08-12 14:37 ` marc eshel
2024-09-09 23:23 ` marc eshel
2024-09-10 7:23 ` Mkrtchyan, Tigran
2024-09-11 5:54 ` Marc Eshel [this message]
2024-09-13 16:46 ` pNFS client is not using the stripe value marc eshel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4c90da07-6de7-4158-ae8b-5eba1d39e367@gmail.com \
--to=eshel.marc@gmail.com \
--cc=aglo@umich.edu \
--cc=linux-nfs@vger.kernel.org \
--cc=schumaker.anna@gmail.com \
--cc=tigran.mkrtchyan@desy.de \
--cc=trondmy@hammerspace.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.