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Process accounting should help track down which process is loading down the system. In Centos the package name is psacct. Tecmint has an article on starting with process accounting.


As per source code you will got this message when there is a differnce in version of sysstat package.Please make sure both server uses same sysstat package sa_common.c void handle_invalid_sa_file(int *fd, struct file_magic *file_magic, char *file, int n) { fprintf(stderr, _("Invalid system activity file: %s\n"), file); ...

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