On 29/05/17 06:03, Sumit Lakra wrote: > I think I am near done with dividing the buffer pool into the number of > nodes available in a NUMA machine. There is one thing left to do - to > check for the presence of 'libnuma' library in the server.
Based on https://jira.mariadb.org/browse/MDEV-12924 I probably broke it in ab0e5031e41d0aa72dd77a6dced9eacc8be5c548 > As of now I > have explicitly defined HAVE_LIBNUMA in the > CMakeList.txt to check my code. CMakeList.txt in which directory? I'd suggest refering to publicly pushed code/branches for review. A branch on https://github.com/theGodlessLakra/server would be good. > Also, to test whether the control of execution reaches within a function > A, I tried to print out a message on the scree like 'fprintf(stderr, In > function A);' This seems to work in main(), my_init(), sys_var_init() > etc, but not in buf0buf.cc. The function which creates the buffer pool > is called by 'buf_pool_init()', which is called by > 'innobase_start_on_create_for_mysql()', which in turn is called by > 'innobase_init()', but I couldn't find where an d how is this function > called. Its called by function pointer -> see maria_declare_plugin in storage/innobase/handler/ha_innodb.cc which is called by the plugin initialization code. > Seems like the output to bot stdout and stderr is being > redirected somewhere and I can't find where (in code). reopen_fstreams in sql/{mysqld,log}.cc > Having this printing stuff is a quick way of testing the flow of control > and although my code is working, You can also run mysqld in gdb and the use "break" to set a breakpoint at a function/file:line and step through form there. > I would like to know about this > redirections if someone can tell me. add --verbose to the mysqld argument. > Also, which part of code calls the 'innobase_init()' function ? sql/plugin.cc:plugin_initialize in the call to plugin->init() > I have attached a screenshot of the server running on my NUMA emulated > pc with and without --numa-interleave=all. [ PID - 21016 without NUMA, > PID - 21058 with NUMA] > > At present it just ALLOCATES a buffer pool instance on each numa node. > Need to work on specific node binding and stuff. _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : maria-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
