Re: [PATCH v2] fio: add hipri option to sg engine

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 1/25/21 1:26 PM, Douglas Gilbert wrote:
> Adds hipri option to the Linux sg driver engine. This turns on the
> SGV4_FLAG_HIPRI flag in recent sg drivers (January 2021) on READ
> and WRITE commands (and not on UNMAP (trim), VERIFY, etc). Uses
> blk_poll() and the mq_poll() callback in SCSI LLDs. The mechanism
> is also called "iopoll".
> 
> The Linux sg engine in fio uses the struct sg_io_hdr based interface
> known as the sg driver "v3" interface.
> Linux sg drivers in the kernel prior to January 2021 (sg version
> 4.0.12) will just ignore the SGV4_FLAG_HIPRI flag and do normal
> completions where LLDs indicate command completion with a (software)
> interrupt or similar mechanism.
> 
> Update fio.1 (manpage) with new hipri sg engine option.

Applied - but you forgot the HOWTO that I mentioned, I added that
one.

-- 
Jens Axboe




[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux