[SPDK] Re: Query regarding SPDK NVMe-oF TCP performance.

Hi Senthil,

This report used the POSIX socket but not the URING socket implementation in SPDK.
And in the test we use nvme bdev, the uring_bdev (which using the kernel devices) are not included in the test report.




Best Regards,
Ziye Yang

-----Original Message-----
From: Senthil Kumar Veluswamy <Senthil.Kumar.Veluswamy(a)wdc.com> 
Sent: Wednesday, March 10, 2021 3:56 PM
To: Storage Performance Development Kit <spdk(a)lists.01.org>
Subject: [SPDK] Query regarding SPDK NVMe-oF TCP performance.

Hi,
   I’m looking at NVMe-oF TCP performance report for SPDKv20.10 from URL https://ci.spdk.io/download/performance-reports/SPDK_tcp_perf_report_2010.pdf.

Would like to know whether it was measured by enabling io_uring support at bdev layer?

As per v19.04 change log, it looks like io_uring was supported from that version onwards.

io_uring
A bdev module that issues I/O to kernel block devices using the new io_uring Linux kernel API was added. This module requires liburing.

Regards,
Senthil Kumar V.
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