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Note to self, and everyone else: Make sure you type disabled instead of disable when you give up and instead decides to disable selinux! cat /etc/sysconfig/selinux # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux ...


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Improved perl script #!/usr/bin/perl # sub counthugepages { my $pid=$_[0]; open (NUMAMAPS, "/proc/$pid/numa_maps") || die "can't open numa_maps"; my $HUGEPAGECOUNT=0; while (<NUMAMAPS>) { if (/huge.*dirty=(\d+)/) { $HUGEPAGECOUNT+=$1; } } close NUMAMAPS; return ($HUGEPAGECOUNT); } printf "%d huge ...


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I thought I'd put an answer with my observations because there are a lot of comments. Based off of your output at https://gist.github.com/christian-marie/7bc845d2da7847534104 We can determine the following: The GFP_MASK for the memory allocation tried is allowed to do the following. Can access emergency pools (I think this means access data below the ...


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Linux kernels 3.0 - 3.8 should be avoided or upgraded to address IO performance degradation Linux kernel IO performance degradation demonstrated by Josh Berkus using a private benchmark workload running against PostgreSQL 9.3 on Ubuntu 12.04 with kernel 3.2.0. "...you really need to avoid every kernel between 3.0 and 3.8. While RHEL has been sticking to ...


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You can use systemtap which will print the size and pid.



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