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From: Konstantin Osipov <kostja@tarantool.org>
To: tarantool-patches@freelists.org
Subject: [tarantool-patches] Re: [PATCH 4/9] gc: run garbage collection in background
Date: Thu, 29 Nov 2018 19:42:06 +0300	[thread overview]
Message-ID: <20181129164206.GD5760@chai> (raw)
In-Reply-To: <79d04c42c94507cdab57ab4e0621001a818bf90c.1543419109.git.vdavydov.dev@gmail.com>

* Vladimir Davydov <vdavydov.dev@gmail.com> [18/11/28 19:16]:
> Currently, garbage collection is executed synchronously by functions
> that may trigger it, such as gc_consumer_advance or gc_add_checkpoint.
> As a result, one has to be very cautious when using those functions as
> they may yield at their will. For example, we can't shoot off stale
> consumers right in tx_prio handler - we have to use rather clumsy WAL
> watcher interface instead. Besides, in future, when the garbage
> collector state is persisted, we will need to call those functions from
> on_commit trigger callback, where yielding is not normally allowed.
> 
> Actually, there's no reason to remove old files synchronously - we could
> as well do it in the background. So this patch introduces a background
> garbage collection fiber that executes gc_run when woken up. Now all
> functions that might trigger garbage collection wake up this fiber
> instead of executing gc_run directly.

OK to push.


-- 
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.io - www.twitter.com/kostja_osipov

  reply	other threads:[~2018-11-29 16:42 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-28 16:14 [PATCH 0/9] Allow to limit size of WAL files Vladimir Davydov
2018-11-28 16:14 ` [PATCH 1/9] wal: separate checkpoint and flush paths Vladimir Davydov
2018-11-29 16:24   ` [tarantool-patches] " Konstantin Osipov
2018-11-28 16:14 ` [PATCH 2/9] wal: remove files needed for recovery from backup checkpoints on ENOSPC Vladimir Davydov
2018-11-29 16:31   ` [tarantool-patches] " Konstantin Osipov
2018-11-29 17:42     ` Vladimir Davydov
2018-11-28 16:14 ` [PATCH 3/9] recovery: restore garbage collector vclock after restart Vladimir Davydov
2018-11-29 16:37   ` [tarantool-patches] " Konstantin Osipov
2018-11-29 17:42     ` Vladimir Davydov
2018-11-28 16:14 ` [PATCH 4/9] gc: run garbage collection in background Vladimir Davydov
2018-11-29 16:42   ` Konstantin Osipov [this message]
2018-11-29 17:43     ` [tarantool-patches] " Vladimir Davydov
2018-11-28 16:14 ` [PATCH 5/9] gc: do not use WAL watcher API for deactivating stale consumers Vladimir Davydov
2018-11-29 17:02   ` [tarantool-patches] " Konstantin Osipov
2018-11-28 16:14 ` [PATCH 6/9] wal: simplify watcher API Vladimir Davydov
2018-11-29 17:33   ` [tarantool-patches] " Konstantin Osipov
2018-11-28 16:14 ` [PATCH 7/9] box: rewrite checkpoint daemon in C Vladimir Davydov
2018-11-30  8:58   ` [tarantool-patches] " Konstantin Osipov
2018-11-30  9:41     ` Vladimir Davydov
2018-12-05 16:21       ` Vladimir Davydov
2018-11-28 16:14 ` [PATCH 8/9] wal: pass struct instead of vclock to checkpoint methods Vladimir Davydov
2018-11-30  9:00   ` [tarantool-patches] " Konstantin Osipov
2018-11-30  9:43     ` Vladimir Davydov
2018-12-03 20:20       ` Konstantin Osipov
2018-11-28 16:14 ` [PATCH 9/9] wal: trigger checkpoint if there are too many WALs Vladimir Davydov
2018-12-03 20:34   ` [tarantool-patches] " Konstantin Osipov
2018-12-04 11:25     ` Vladimir Davydov
2018-12-04 12:53       ` Konstantin Osipov

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