Sean Reifschneider

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4,573 reputation
11119
bio website tummy.com/journals/users/jafo
location Fort Collins, CO
age 44
visits member for 4 years, 10 months
seen Mar 28 at 17:45

Linux system administrator specializing in Linux in the data center.


Dec
12
awarded  Great Answer
Oct
8
answered Is this a critical RAID error?
Oct
8
comment Is this a critical RAID error?
The array is still optimal, which means that the array thinks that it can still recover from a drive failure. The reality of this may be different depending on whether you have run a media verify on the array yet. In my case, I was getting this error and smartctl (see the other answer) says there were 115 uncorrected read errors. It could be that it got a read error, calculated the data from the other discs and re-wrote that missing data, correcting the device marginal block.
Aug
31
awarded  Yearling
Jul
27
awarded  Necromancer
Mar
2
answered How to broadcast ARP update to all neighbors in Linux?
Mar
2
comment How to broadcast ARP update to all neighbors in Linux?
@TomTom: Yes, if you are failing over via heartbeat/corosync, whatever. However, if you manually move services from one machine to another, particularly if you are on Cisco gear, manually sending a gratuitous ARP is extremely useful. I agree that it isn't something you do frequently, but as someone who has also been doing IT for 20 years, I have found myself in a number of situations where I needed to do it.
Jan
9
awarded  Revival
Oct
20
awarded  Good Answer
Aug
31
awarded  Yearling
May
22
awarded  Nice Answer
Feb
3
awarded  Nice Answer
Jan
30
awarded  Nice Answer
Jan
27
awarded  Necromancer
Jan
23
awarded  Necromancer
Jan
20
comment How can I configure Apache to use more of my CPU?
Your point about being able to rule out the CPU as the bottle-neck is a good one. Otherwise, your message could be more helpful: References to the other apache performance Q&As, what information is missing from the httpd.conf file, you ask a lot of questions, without providing information on how Ryan can get those answers.
Jan
20
comment How can I configure Apache to use more of my CPU?
@symcbean, your comment could be more useful. If you have something you prefer over "uptime" to see the system load average, don't keep us in suspense. strace is shockingly useful in cases like this.
Jan
20
comment How to figure out why a process is stuck
file descriptor 0 is stdin, it sounds like this process is reading something from it's terminal or a pipe, and it is waiting for that. Are you sure you are running the command properly (passing input to it on stdin when necessary)? Is there a command in a pipe in front of this that maybe is hanging and not sending data to this process?
Jan
20
answered How can I configure Apache to use more of my CPU?
Jan
17
awarded  Peer Pressure