alexclear

diff -u -r .//arch/alpha/include/asm/pgalloc.h ../linux-2.6.32/arch/alpha/include/asm/pgalloc.h
--- .//arch/alpha/include/asm/pgalloc.h 2009-12-03 06:51:21.000000000 +0300
+++ ../linux-2.6.32/arch/alpha/include/asm/pgalloc.h    2012-07-22 21:06:48.000000000 +0400
@@ -38,10 +38,15 @@
 }
 
 static inline pmd_t *
+__pmd_alloc_one(struct mm_struct *mm, unsigned long address, gfp_t gfp_mask)
+{
+       return (pmd_t *)__get_free_page(gfp_mask | __GFP_ZERO);

alexclear

#!/usr/bin/perl
use strict;
use warnings;

print "Processing ${ARGV[0]}, filtering domain ${ARGV[1]}\n";
open INPUT, ${ARGV[0]} or die $!;
open OUTPUT, ">${ARGV[0]}.filtered.xml" or die $!;

my $skip = 0;
while (my $line = <INPUT>) {

alexclear

[root@cellar sb]# sysbench --test=fileio --file-total-size=18G --file-test-mode=rndrw --max-time=300 --max-requests=0 run
sysbench 0.4.12:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1

Extra file open flags: 0
128 files, 144Mb each
18Gb total file size
Block size 16Kb

alexclear

[client]
port            = 3306
socket          = /var/run/mysqld/mysqld.sock

[mysqld_safe]
socket          = /var/run/mysqld/mysqld.sock
nice            = 0

[mysqld]
user            = mysql

alexclear

#!/bin/sh

. /usr/share/initramfs-tools/hook-functions

PREREQ=""
prereqs()
{
     echo "$PREREQ"
}

alexclear

server {
        listen   {{ grafana_ext_ip }}:{{ grafana_http_port }}; ## listen for ipv4; this line is default and implied
        #listen   [::]:80 default ipv6only=on; ## listen for ipv6

        root /usr/share/nginx/www/grafana/src;
        index index.html index.htm;

        auth_basic      "Restricted";
        auth_basic_user_file  htpasswd.grafana;

alexclear

root@hypervisor02 ~ mount -o ro,recovery /dev/sdc3 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/sdc3,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.
root@hypervisor02 ~ 

alexclear

When I start "recover node <storage_node_name>" message of type QUEUE_ID_RECOVERY_NODE seems to be
blocking processing of other messages (mainly, QUEUE_ID_PER_OBJECT ones).

I tried to visualize message processing using StatsD:
http://ns2.1888.spb.ru/2015-02-24-024731_1366x768_scrot.png
A graph at the lower right corner depicts calls to
handle_call({consume, ?QUEUE_ID_RECOVERY_NODE, MessageBin}).
It is my understanding that recover_node_callback(Node) should generate a lot
of QUEUE_TYPE_PER_OBJECT messages synchronously for a single QUEUE_ID_RECOVERY_NODE
message but the graph shows that QUEUE_ID_RECOVERY_NODE messages are constantly processed.

alexclear

root@fe5 ~ find /opt/graphite/storage/whisper -name "*.wsp" | wc -l
18398
root@fe5 ~ 

alexclear

export https_proxy="https://student:[email protected]:8080/"
export http_proxy="https://student:[email protected]:8080/"
cd /home/student
sudo apt-get update
sudo apt-get install git
git clone https://github.com/alexclear/nginx.git
sudo apt-get install libpcre3-dev zlib1g-dev
cd /home/student/nginx
./auto/configure
make