Messages in this thread | | | Date | Sat, 23 Jul 2005 20:16:20 -0300 | From | Márcio Oliveira <> | Subject | Re: Memory Management |
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Neil,
>The best way I can think to do that is take a look at /proc/slabinfo. That will >likely give you a pointer to which area of code is eating up your memory. > > OK. I will monitor the /proc/slabinfo file.
>Based on the sysrq-m info you posted it looks like due to fragmentation the >largest chunk of memory you can allocate is 2MB (perhaps less depending on >address space availability). If you can build a test kernel to do a show_state >rather than a show_mem at the beginning of oom_kil, then you should be able to >tell who is trying to do an allocation that leads to kswapd calling >out_of_memory. > > Neil, I'm trying to recompile the kernel source 2.4.21-32.0.1 and get some error messages:
In file included from /usr/src/linux-2.4.21-32.0.1.EL/include/linux/prefetch.h:13, from /usr/src/linux-2.4.21-32.0.1.EL/include/linux/list.h:6, from /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:12, from 3w-xxxx.c:172: /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:61: warning: parameter names (without types) in function declaration /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:61: field `loops_per_jiffy_R_ver_str' declared as a function /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:84: invalid suffix on integer constant /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:84: syntax error before numeric constant /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:84: warning: function declaration isn't a prototype /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:269: invalid suffix on integer constant /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:269: syntax error before numeric constant /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:269: warning: function declaration isn't a prototype /usr/src/linux-2.4.21-32.0.1.EL/include/asm/processor.h:273: warning: parameter names (without types) in function declaration In file included from 3w-xxxx.c:172: /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:190: invalid suffix on integer constant /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:190: syntax error before numeric constant /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:190: `inter_module_register_R_ver_str' declared as function returning a function /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:190: warning: function declaration isn't a prototype /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:191: invalid suffix on integer constant /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:191: syntax error before numeric constant /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:191: `inter_module_unregister_R_ver_str' declared as function returning a function /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:191: warning: function declaration isn't a prototype /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:192: `inter_module_get_R_ver_str' declared as function returning a function /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:192: warning: parameter names (without types) in function declaration /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:193: `inter_module_get_request_R_ver_str' declared as function returning a function /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:193: warning: parameter names (without types) in function declaration /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:194: invalid suffix on integer constant /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:194: syntax error before numeric constant /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:194: `inter_module_put_R_ver_str' declared as function returning a function /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:194: warning: function declaration isn't a prototype /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:203: `try_inc_mod_count_R_ver_str' declared as function returning a function /usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h:203: warning: parameter names (without types) in function declaration make[3]: *** [3w-xxxx_10200033.o] Error 1 make[3]: Leaving directory `/usr/src/linux-2.4.21-32.0.1.EL/drivers/addon/3w-xxxx_10200033' make[2]: *** [_modsubdir_3w-xxxx_10200033] Error 2 make[2]: Leaving directory `/usr/src/linux-2.4.21-32.0.1.EL/drivers/addon' make[1]: *** [_modsubdir_addon] Error 2 make[1]: Leaving directory `/usr/src/linux-2.4.21-32.0.1.EL/drivers' make: *** [_mod_drivers] Error 2
Is there any relationship between the sysrq-m changes to do show_state() rather than a show_mem() and the compiling erros?
/usr/src/linux-2.4.21-32.0.1.EL/include/linux/prefetch.h, line 13: #include <asm/processor.h>
/usr/src/linux-2.4.21-32.0.1.EL/include/linux/list.h ,line 6: #include <linux/prefetch.h>
/usr/src/linux-2.4.21-32.0.1.EL/include/linux/module.h, line 12: #include <linux/list.h>
3w-xxxx.c, line 172: #include <linux/module.h>
Any ideia about the kernel compiling erros?
(If I try to recompile a kernel.org kernel, it is compiled fine).
Thanks again.
Márcio.
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