From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Douglas Gilbert <dgilbert@interlog.com>
Cc: linux-scsi@vger.kernel.org, martin.petersen@oracle.com,
jejb@linux.vnet.ibm.com, hare@suse.de, Damien.LeMoal@wdc.com
Subject: Re: [PATCH v4 05/14] scsi_debug: improve command duration calculation
Date: Mon, 13 Apr 2020 18:50:59 -0400 [thread overview]
Message-ID: <yq1imi3vw30.fsf@oracle.com> (raw)
In-Reply-To: <20200225062351.21267-6-dgilbert@interlog.com> (Douglas Gilbert's message of "Tue, 25 Feb 2020 01:23:42 -0500")
Doug,
> The action prior to this patch was to always do the timer based
> delay. After this patch, for ndelay values less than 1
> millisecond, this driver will complete the command immediately.
> And in the case where the user specified delay was 7
> microseconds, a timer delay of 600 nanoseconds will be set
> ((7 - 6.4) * 1000).
Looks OK.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2020-04-13 22:53 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-25 6:23 [PATCH v4 00/14] scsi_debug: host managed ZBC + doublestore Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 01/14] scsi_debug: randomize command completion time Douglas Gilbert
2020-04-13 22:24 ` Martin K. Petersen
2020-02-25 6:23 ` [PATCH v4 02/14] scsi_debug: add doublestore option Douglas Gilbert
2020-04-13 22:36 ` Martin K. Petersen
2020-02-25 6:23 ` [PATCH v4 03/14] scsi_debug: implement verify(10), add verify(16) Douglas Gilbert
2020-04-13 22:48 ` Martin K. Petersen
2020-02-25 6:23 ` [PATCH v4 04/14] scsi_debug: weaken rwlock around ramdisk access Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 05/14] scsi_debug: improve command duration calculation Douglas Gilbert
2020-04-13 22:50 ` Martin K. Petersen [this message]
2020-02-25 6:23 ` [PATCH v4 06/14] scsi_debug: implement pre-fetch commands Douglas Gilbert
2020-04-13 22:57 ` Martin K. Petersen
2020-04-19 18:01 ` Douglas Gilbert
2020-04-19 18:22 ` Julian Wiedmann
2020-04-19 21:53 ` Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 07/14] scsi_debug: expand zbc support Douglas Gilbert
2020-04-13 23:00 ` Martin K. Petersen
2020-04-13 23:05 ` Damien Le Moal
2020-04-13 23:06 ` Damien Le Moal
2020-04-14 1:55 ` Martin K. Petersen
2020-04-14 5:38 ` Damien Le Moal
2020-02-25 6:23 ` [PATCH v4 08/14] scsi_debug: add zone commands Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 09/14] scsi_debug: add zbc parameter Douglas Gilbert
2020-04-15 2:10 ` Martin K. Petersen
2020-02-25 6:23 ` [PATCH v4 10/14] scsi_debug: re-arrange parameters alphabetically Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 11/14] scsi_debug: zone_max_open module parameter Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 12/14] scsi_debug: zone_nr_conv " Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 13/14] scsi_debug: zone_size_mb " Douglas Gilbert
2020-02-25 6:23 ` [PATCH v4 14/14] scsi_debug: bump to version 1.89 Douglas Gilbert
2020-04-13 23:19 ` [PATCH v4 00/14] scsi_debug: host managed ZBC + doublestore Martin K. Petersen
2020-04-14 2:49 ` Douglas Gilbert
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