From: Paul Eggert <eggert@cs.ucla.edu>
To: Pip Cet <pipcet@gmail.com>
Cc: 36597@debbugs.gnu.org
Subject: bug#36597: 27.0.50; rehash hash tables eagerly in pdumper
Date: Sat, 20 Jul 2019 23:32:03 -0700 [thread overview]
Message-ID: <0a45d364-73ee-4ef3-62de-4d8d42578036@cs.ucla.edu> (raw)
In-Reply-To: <CAOqdjBeV0sbCCQLdFRm9ikfLQouhkqv7xk1nY_PQYq05oUKcrA@mail.gmail.com>
Pip Cet wrote:
> I don't see anything in there that
> would drastically affect performance or memory footprint.
The drastic change to the memory footprint occurs because the old code
incorrectly computed the length of the hash table's vectors, and over-allocated
them in some cases. The over-allocation factor could get worse with each hash
table resize, following a Fibonacci-like sequence. I think this was a bug I
introduced in 2011-07-21T17:41:20!eggert@cs.ucla.edu.
next prev parent reply other threads:[~2019-07-21 6:32 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-11 14:05 bug#36597: 27.0.50; rehash hash tables eagerly in pdumper Pip Cet
2019-07-14 14:39 ` Paul Eggert
2019-07-14 15:01 ` Pip Cet
2019-07-14 15:49 ` Paul Eggert
2019-07-14 16:54 ` Pip Cet
2019-07-15 14:39 ` Pip Cet
2019-07-19 7:23 ` Pip Cet
2019-07-19 7:46 ` Eli Zaretskii
2019-07-20 12:38 ` Pip Cet
2019-07-21 3:18 ` Paul Eggert
2019-07-21 5:34 ` Pip Cet
2019-07-21 6:32 ` Paul Eggert [this message]
2019-07-21 6:32 ` Pip Cet
2020-08-09 19:27 ` Lars Ingebrigtsen
2020-08-10 11:51 ` Pip Cet
2020-08-10 13:04 ` Lars Ingebrigtsen
2020-08-11 9:33 ` Paul Eggert
2020-08-11 9:40 ` Pip Cet
2020-08-11 11:50 ` Lars Ingebrigtsen
2020-08-11 14:52 ` Eli Zaretskii
2020-08-11 15:30 ` Paul Eggert
2020-08-11 17:00 ` Eli Zaretskii
2020-08-11 18:11 ` Paul Eggert
2020-08-11 18:35 ` Eli Zaretskii
2020-08-11 18:55 ` Eli Zaretskii
2020-08-11 23:43 ` Paul Eggert
2020-08-12 14:10 ` Eli Zaretskii
2020-08-12 14:46 ` Eli Zaretskii
2020-08-12 19:11 ` Paul Eggert
2020-08-12 19:28 ` Eli Zaretskii
2020-08-12 20:41 ` Andy Moreton
2020-08-11 15:59 ` Pip Cet
2020-08-11 17:00 ` Eli Zaretskii
2020-08-11 17:31 ` Paul Eggert
2020-08-11 18:27 ` Andy Moreton
2020-08-11 18:32 ` Eli Zaretskii
2019-07-18 5:39 ` Eli Zaretskii
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