All of lore.kernel.org
 help / color / mirror / Atom feed
From: David Teigland <teigland@redhat.com>
To: Heming Zhao <heming.zhao@suse.com>
Cc: Martin Wilck <mwilck@suse.de>,
	"linux-lvm@redhat.com" <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] system boot time regression when using lvm2-2.03.05
Date: Thu, 5 Sep 2019 11:55:19 -0500	[thread overview]
Message-ID: <20190905165519.GB30473@redhat.com> (raw)
In-Reply-To: <370ba3fa-53df-7213-8876-d37ef1a3b57e@suse.com>

On Thu, Sep 05, 2019 at 12:35:53PM +0000, Heming Zhao wrote:
> In pvscan_cache_cmd, the code in below area "#if 0 .. #endif take a huge 
> time. When I used below modified code to boot, the time reduced from 
> 1min to 1.389s.

That stops the command from doing any work.  I suspect that in your tests,
the "fast" case is not doing any activation, and the "slow" case is.
Please check where the LVs are being activated in the fast case.

  reply	other threads:[~2019-09-05 16:55 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-29 13:52 [linux-lvm] system boot time regression when using lvm2-2.03.05 Heming Zhao
2019-08-29 14:37 ` David Teigland
2019-09-03  5:02   ` Heming Zhao
2019-09-03 15:17     ` David Teigland
2019-09-04  8:13       ` Heming Zhao
2019-09-05 12:35         ` Heming Zhao
2019-09-05 16:55           ` David Teigland [this message]
2019-09-06  4:31             ` Heming Zhao
2019-09-06  5:01               ` Heming Zhao
2019-09-06  6:51                 ` Martin Wilck
2019-09-06  8:46                   ` Heming Zhao
2019-09-06 14:15                     ` David Teigland
2019-09-06 14:26                     ` David Teigland
2019-09-06 14:03                   ` David Teigland
2019-09-09 11:42                     ` Heming Zhao
2019-09-09 14:09                       ` David Teigland
2019-09-10  8:01                         ` Martin Wilck
2019-09-10 15:20                           ` David Teigland
2019-09-10 20:38                             ` Zdenek Kabelac
2019-09-11  7:17                               ` Martin Wilck
2019-09-11  9:13                                 ` Zdenek Kabelac
2019-09-12 13:58                                   ` Martin Wilck

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=20190905165519.GB30473@redhat.com \
    --to=teigland@redhat.com \
    --cc=heming.zhao@suse.com \
    --cc=linux-lvm@redhat.com \
    --cc=mwilck@suse.de \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.