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
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