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cr0
2008 Jun 23
2
1 week after full migration to 1.1v
...ion of about 240K users from one server
with qmail, courier imap, maildrop and ldap to postfix, dovecot, lda
+sieve. Before the migration the server and the storage were always on
high load.
Before migration:
Storage IOPs = 4600
Read average = ?2800
?Write average = 1800
Storage CPU (Raid5)
Crl0 = 50%
Crl1 = 50%
Server Load = 120
%user = 35
%system = 60
%iowait = 5
%idle = 0
After migration:
?Storage IOPs = 3000
Read average = ?1200
?Write average = 1800
Storage CPU (Raid5)
Crl0 = 40%
Crl1 = 40%
Server Load = 25
%user = 10
%system = 27
%iowait = 40
%idle = 23
And now the server re...