Displaying 2 results from an estimated 2 matches for "fromdual".
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2014 Oct 16
2
Proxy problem: "imap-login: Error: proxy(USERNAME): connect(10.x.x.178, 993) failed: Cannot assign requested address (after 0 secs, local=10.x.x.104)"
...e outgoing connections.
We already optimized:
---- snip ----
net.ipv4.tcp_fin_timeout=5
# down from 30s
net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_tw_recycle=1
# http://redis4you.com/articles.php?id=012&name=Redis+high+traffic+connection+issue
net.ipv4.ip_local_port_range=10000 65000
# http://www.fromdual.com/huge-amount-of-time-wait-connections
net.ipv4.netfilter.ip_conntrack_max=524288
---- snip ----
But still we get (once the load is rising beyond some point):
# fgrep "Cannot assign requested address" /var/log/dovecot/dovecot.log |awk '{print $NF}' | sort | uniq -c | sort -n...
2012 Apr 27
5
How to cap table with active record
We want to use SQL/active record for logging but limit the table size
so that older messages disappear off of the table Some process has to
run periodically to do that.
Suppose I want to keep my table size to not much bigger than
50,000,000 rows or so. What is the easiest, most efficient way to
delete any extra rows that there may be ? This is an SQL/active record
problem I have not encountered