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re in the meantime, the problem has occured on more MySQL deployments. I have recompiled glibc with --disable-experimental-malloc and hope this helps. If you hear nothing from me within a week, assume it has helped. Regards, Michael Brunnbauer On Sat, Aug 12, 2017 at 04:19:38PM +0200, Michael Brunnbauer wrote: > > hi all, > > since upgrading from glibc-2.23 to 2.26, I have observed out of memory errors > in 2 different mysql deployments after 2-3 days of runtime: > > 170812 15:51:42 [ERROR] /usr/bin/mysqld: Out of memory (Needed 1675264 bytes) > 170812 15:52:01 [ERROR] /usr/bin/mysqld: Out of memory (Needed 1677712 bytes) > > I've never had such Problems with those mysql deployments before and one > of them is configured for very modest memory usage. > > I use mysql 5.5.57 and Kernel 3.16.46. glibc has been compiled with gcc-4.9.4 > like this: > > echo "CFLAGS += -march=i686" > configparms > ../configure --enable-add-ons --prefix=/usr --enable-kernel=2.6.25 --host=i686-pc-linux-gnu > > MySQL has not been recompiled since upgrading glibc and gcc (previous version > 4.8.5). > > Have there been any changes that can explain this, e.g. the per-thread cache > for malloc? > > Regards, > > Michael Brunnbauer > > -- > ++ Michael Brunnbauer > ++ netEstate GmbH > ++ Geisenhausener Straße 11a > ++ 81379 München > ++ Tel +49 89 32 19 77 80 > ++ Fax +49 89 32 19 77 89 > ++ E-Mail brunni@netestate.de > ++ http://www.netestate.de/ > ++ > ++ Sitz: München, HRB Nr.142452 (Handelsregister B München) > ++ USt-IdNr. DE221033342 > ++ Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer > ++ Prokurist: Dipl. Kfm. (Univ.) Markus Hendel -- ++ Michael Brunnbauer ++ netEstate GmbH ++ Geisenhausener Straße 11a ++ 81379 München ++ Tel +49 89 32 19 77 80 ++ Fax +49 89 32 19 77 89 ++ E-Mail brunni@netestate.de ++ http://www.netestate.de/ ++ ++ Sitz: München, HRB Nr.142452 (Handelsregister B München) ++ USt-IdNr. DE221033342 ++ Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer ++ Prokurist: Dipl. Kfm. (Univ.) Markus Hendel
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