For second test I have changed I/O scheduler only Nothing changed in terms of adding speed!
Test start Test stop Test duration Num users User/sec
19.4.2013 19.4.2013 min 5759,00 742837 128,99 14:37:45 16:13:34 sec 95,98333
[root@spr1 /]# cat /sys/block/sda/queue/scheduler noop [anticipatory] deadline cfq
Total DISK READ: 0.00 B/s | Total DISK WRITE: 7.91 M/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 4165 be/4 root 0.00 B/s 1307.21 K/s 0.00 % 99.99 % [flush-8:0] 2058 be/3 root 0.00 B/s 0.00 B/s 0.00 % 99.99 % [jbd2/sda3-8] 4144 be/4 openldap 0.00 B/s 2.23 M/s 0.00 % 0.00 % slapd -h ldap:/// -F /opt/openldap/etc/openldap/slapd.d -g openldap -u openldap 4145 be/4 openldap 0.00 B/s 2.18 M/s 0.00 % 0.00 % slapd -h ldap:/// -F /opt/openldap/etc/openldap/slapd.d -g openldap -u openldap 4146 be/4 openldap 0.00 B/s 2.28 M/s 0.00 % 0.00 % slapd -h ldap:/// -F /opt/openldap/etc/openldap/slapd.d -g openldap -u openldap 4157 be/4 openldap 0.00 B/s 2.19 M/s 0.00 % 0.00 % slapd -h ldap:/// -F /opt/openldap/etc/openldap/slapd.d -g openldap -u openldap 1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init
On second server I/O is different
Total DISK READ: 0.00 B/s | Total DISK WRITE: 9.92 M/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 2141 be/3 root 0.00 B/s 0.00 B/s 0.00 % 99.99 % [jbd2/sda3-8] 4284 be/4 root 0.00 B/s 1580.46 K/s 0.00 % 73.88 % [flush-8:0] 4201 be/4 openldap 0.00 B/s 56.76 M/s 0.00 % 0.00 % slapd -h ldap:/// -F /opt/openldap/etc/openldap/slapd.d -g openldap -u openldap
I/O difference?