Date: Fri, 4 Dec 2015 09:35:54 +0800 From: "=?utf-8?B?R2F2aW4gTXU=?=" <gavin.mu@qq.com> To: "=?utf-8?B?ZnJlZWJzZC1zdGFibGU=?=" <freebsd-stable@freebsd.org> Subject: application coredump behavior differences between FreeBSD 7.0 and FreeBSD 10.1 Message-ID: <tencent_16AD659A73E203C91A0E112F@qq.com>
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Hi, We have an application running on old FreeBSD 7.0, and we are upgrading the base system to FreeBSD 10.1. The application uses sysv_shm, and will allocate a lot of share memory, though most of time only a part of the allocated memory is used. aka. large SIZE and small RES from /usr/bin/top view. When the application core dump, the core dump file will be large, and in FreeBSD 7.0, it uses only a little more memory to do core dump, but in FreeBSD 10.1, it seems all share memory are touched and uses a lot of physical memory (RES in /usr/bin/top output will increase very much) and cause memory drain. I have been debugging but can not find any clue yet. Could someone provide some points where the issue happen? Thanks. Regards, Gavin Mu
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