Bug #3827 | MyISAM refuses to cache more than ~1,688,000 key blocks | ||
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Submitted: | 19 May 2004 2:49 | Modified: | 23 Sep 2005 6:45 |
Reporter: | Alex Seropian | Email Updates: | |
Status: | No Feedback | Impact on me: | |
Category: | MySQL Server: MyISAM storage engine | Severity: | S3 (Non-critical) |
Version: | 4.0.18-standard-log | OS: | MacOS (Mac OS X Server 10.3.3) |
Assigned to: | CPU Architecture: | Any |
[19 May 2004 2:49]
Alex Seropian
[29 May 2004 0:50]
Matthew Lord
It looks like we're unable to use beyond approx. 1.75GB of memory although in apple's docs they state that there is up to 4GB of addressable space allocated to a process. They do also state that the each process has it's own 32 bit virtual address space.
[25 Jun 2004 20:31]
Alex Seropian
If this is something that needs support from Apple, I'd be more than happy to donate a code-level Technical Support Incident ( http://developer.apple.com/faq/techsupport.html ) to get it resolved.
[29 Sep 2004 11:53]
MySQL Verification Team
I have done some inquiries and analysis and 1.8 Gb is a maximum value that is allocatable for a single chunk of memory on 10.3. This is something done by trial and error and is not documented anywhere. It was even possible to build a binary on G5 to allocate more, but as soon as 1.8 Gb limit is passed, server was killed by kernel. This will be fixed when Apple releases 64-bit version of OS.
[13 Jul 2005 23:16]
Alex Seropian
Mac OS X 10.4 "Tiger" is fully 64-bit; this bug should be re-opened.
[23 Aug 2005 6:45]
Sergei Golubchik
Do you mean, the same behaviour (MyISAM refuses to cache more than ...) is observed on Mac OS X 10.4 "Tiger" even when mysqld binary is compiled in 64-bit mode ?
[23 Sep 2005 23:00]
Bugs System
No feedback was provided for this bug for over a month, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open".