From: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
To: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: tml <tarantool-patches@dev.tarantool.org>
Subject: Re: [Tarantool-patches] [PATCH 3/5] qsync: txn_commit_async -- drop redundant variable
Date: Fri, 10 Jul 2020 23:28:26 +0200 [thread overview]
Message-ID: <66e76c8e-3c53-9336-9c37-48dee8fefee8@tarantool.org> (raw)
In-Reply-To: <20200710211020.GI1999@grain>
On 10/07/2020 23:10, Cyrill Gorcunov wrote:
> On Fri, Jul 10, 2020 at 10:35:50PM +0200, Vladislav Shpilevoy wrote:
>> Опять же. Патч технически корректен, но так же и бесполезен.
>> Его полезность сравнима с исправлением опечатки в каком-нибудь
>> не особо нужном комменте. Сори, если токсично звучит.
>>
>> Но не вижу в этом патче нужды.
>
> We've to allocate a variable which we simply don't need. Look,
> the former code reads the flag, puts it into variable then
> immediately read it and that's all :/ I think we should not
> spread @is_sync but read the flag as much as possible for
> better grep'ability.
Do you have a proof that this change improves anything? That
the variable 'allocation' on the stack actually happens, and
costs even 1 ns?
next prev parent reply other threads:[~2020-07-10 21:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 7:56 [Tarantool-patches] [PATCH 0/5] qsync: code cleanup Cyrill Gorcunov
2020-07-10 7:56 ` [Tarantool-patches] [PATCH 1/5] qsync: eliminate redundant writes Cyrill Gorcunov
2020-07-10 20:31 ` Vladislav Shpilevoy
2020-07-10 21:04 ` Cyrill Gorcunov
2020-07-10 7:56 ` [Tarantool-patches] [PATCH 2/5] qsync: add a comment about sync txn in journal allocation Cyrill Gorcunov
2020-07-10 20:33 ` Vladislav Shpilevoy
2020-07-10 20:34 ` Vladislav Shpilevoy
2020-07-10 21:07 ` Cyrill Gorcunov
2020-07-10 21:08 ` Vladislav Shpilevoy
2020-07-11 16:08 ` Vladislav Shpilevoy
2020-07-10 7:56 ` [Tarantool-patches] [PATCH 3/5] qsync: txn_commit_async -- drop redundant variable Cyrill Gorcunov
2020-07-10 20:35 ` Vladislav Shpilevoy
2020-07-10 21:10 ` Cyrill Gorcunov
2020-07-10 21:28 ` Vladislav Shpilevoy [this message]
2020-07-10 21:36 ` Cyrill Gorcunov
2020-07-11 14:10 ` Vladislav Shpilevoy
2020-07-11 15:18 ` Cyrill Gorcunov
2020-07-10 7:56 ` [Tarantool-patches] [PATCH 4/5] qsync: txn_commit -- use txn flag instead of caching variable Cyrill Gorcunov
2020-07-10 20:36 ` Vladislav Shpilevoy
2020-07-10 21:27 ` Cyrill Gorcunov
2020-07-10 7:56 ` [Tarantool-patches] [PATCH 5/5] qsync: sanitize txn_limbo_on_rollback Cyrill Gorcunov
2020-07-10 20:38 ` Vladislav Shpilevoy
2020-07-11 15:46 ` Cyrill Gorcunov
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=66e76c8e-3c53-9336-9c37-48dee8fefee8@tarantool.org \
--to=v.shpilevoy@tarantool.org \
--cc=gorcunov@gmail.com \
--cc=tarantool-patches@dev.tarantool.org \
--subject='Re: [Tarantool-patches] [PATCH 3/5] qsync: txn_commit_async -- drop redundant variable' \
/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
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox