From: Alexander Duyck <alexander.h.duyck@linux.intel.com>
To: dan.j.williams@intel.com, linux-nvdimm@lists.01.org
Cc: alexander.h.duyck@linux.intel.com, zwisler@kernel.org
Subject: [nvdimm PATCH 0/6] Label initialization time optimizations
Date: Wed, 10 Oct 2018 16:36:15 -0700 [thread overview]
Message-ID: <20181010233428.12228.26106.stgit@localhost.localdomain> (raw)
This patch set is intended to improve NVDIMM label read times by first
increasing the upper limit on the label read/write size, and then
reducing the number of reads by making use of the free label bitmap in
the index to determine what labels are actually populated and only read
those labels. In my testing on a system populated with 24 NVDIMM modules
I see the total label init time drop from about 24 seconds down to 2 to
3 seconds.
In the process of coding this up I came across a few minor issues that
I felt should be addressed so I have added a few patches for those fixes
along the way.
---
Alexander Duyck (5):
nvdimm: Sanity check labeloff
nvdimm: Clarify comment in sizeof_namespace_index
nvdimm: Remove empty if statement
nvdimm: Split label init out from the logic for getting config data
nvdimm: Use namespace index data to reduce number of label reads needed
Dan Williams (1):
libnvdimm, dimm: Maximize label transfer size
drivers/nvdimm/dimm.c | 6 --
drivers/nvdimm/dimm_devs.c | 60 +++++++------------
drivers/nvdimm/label.c | 142 ++++++++++++++++++++++++++++++++++++++++++--
drivers/nvdimm/label.h | 4 -
drivers/nvdimm/nd.h | 2 +
5 files changed, 163 insertions(+), 51 deletions(-)
--
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
next reply other threads:[~2018-10-10 23:36 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 23:36 Alexander Duyck [this message]
2018-10-10 23:38 ` [nvdimm PATCH 1/6] libnvdimm, dimm: Maximize label transfer size Alexander Duyck
2018-10-10 23:38 ` [nvdimm PATCH 2/6] nvdimm: Sanity check labeloff Alexander Duyck
2018-10-10 23:38 ` [nvdimm PATCH 3/6] nvdimm: Clarify comment in sizeof_namespace_index Alexander Duyck
2018-10-10 23:39 ` [nvdimm PATCH 4/6] nvdimm: Remove empty if statement Alexander Duyck
2018-10-10 23:39 ` [nvdimm PATCH 5/6] nvdimm: Split label init out from the logic for getting config data Alexander Duyck
2018-10-10 23:39 ` [nvdimm PATCH 6/6] nvdimm: Use namespace index data to reduce number of label reads needed Alexander Duyck
2018-10-12 1:35 ` Dan Williams
2018-10-11 4:48 ` [nvdimm PATCH 0/6] Label initialization time optimizations Dan Williams
2018-10-12 15:36 ` Kani, Toshi
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=20181010233428.12228.26106.stgit@localhost.localdomain \
--to=alexander.h.duyck@linux.intel.com \
--cc=dan.j.williams@intel.com \
--cc=linux-nvdimm@lists.01.org \
--cc=zwisler@kernel.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).