170 reputation
6
bio website
location
age
visits member for 3 years, 4 months
seen Sep 22 at 19:10

Oct
8
awarded  Popular Question
Mar
18
accepted MySQL: Does sync_binlog 0 delay replication?
Mar
13
asked MySQL: Does sync_binlog 0 delay replication?
Mar
13
awarded  Popular Question
Mar
13
asked MongoDB CPU usage in top is confusing
May
2
comment MySQL high “sy” (kernel) CPU time
The storage is an XFS partition on an EBS volume. There does appear to be some relationship between IO wait and system CPU time, but even so--why would kernel time be 10x larger than user time on a MySQL server?
May
2
comment MySQL high “sy” (kernel) CPU time
OK, added mpstat output to OP
May
2
revised MySQL high “sy” (kernel) CPU time
Added mpstat output
May
2
asked MySQL high “sy” (kernel) CPU time
Aug
12
awarded  Supporter
Aug
12
awarded  Scholar
Aug
12
comment Have Apache log requests when they come in, rather than when they finish
This is what I was looking for, but it doesn't look like I can just wipe out this log periodically (rm /var/log/apache2/forensic.log every hour) or forensic logging just breaks until I restart apache. Ideas?
Aug
12
accepted Have Apache log requests when they come in, rather than when they finish
Aug
9
asked Have Apache log requests when they come in, rather than when they finish
Aug
9
comment Server responds to pings, but won't accept SSH connections until reboot. 0% CPU
@MirceaVutcovici let us continue this discussion in chat
Aug
9
comment Server responds to pings, but won't accept SSH connections until reboot. 0% CPU
Amazon's EC2 is monitoring the VM for some basic stats like disk IO, network IO, CPU usage, etc., from outside the virtual machine (which is running in Xen, I believe). When I attempt to SSH in, I don't get a single byte back from the server, but I do get a TCP connection opened.
Aug
9
comment Server responds to pings, but won't accept SSH connections until reboot. 0% CPU
Nope, looks like nscd isn't running (ps aux | grep nscd) or installed (whereis nscd).
Aug
9
comment Server responds to pings, but won't accept SSH connections until reboot. 0% CPU
I don't think VM is swapping, since the disk usage is at 0% right along with CPU usage as soon as the machine stops responding. That also wouldn't explain the failure of a 1-minute-interval cron job to even attempt to start even when I let the crashed server alone for hours.
Aug
9
revised Server responds to pings, but won't accept SSH connections until reboot. 0% CPU
added 139 characters in body
Aug
9
awarded  Editor