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Apr
19
comment Shell command slow when using pipe, fast with intermediate file
I'll second the recommendation for strace. My guess would be that gs turns off IO buffering when outputting to a pipe instead of to a file.
Apr
19
answered RedHat 5: HP Server ethtool not working
Mar
18
comment Could high MaxClient value cause CPU load issues no matter actual server stress caused by visits?
@Saix: MaxRequestsPerChild has nothing to do with the number of concurrent requests the server is capable of handling. It just means that after a certain amount of requests, the child exists, thus it's useful as a workaround for memory leaks, application hangs and other bugs. You need to determine what is a suitable value for your environment.
Mar
18
answered Could high MaxClient value cause CPU load issues no matter actual server stress caused by visits?
Mar
13
answered rsync incremental history
Mar
1
answered RAID 10 Vs RAID 5
Feb
23
comment Maximum number of users logged simultaneously into Linux
Note that MaxSessions, per the manpage, is "maximum number of open sessions permitted per network connection". AFAIK there is no builtin hard limit on the number of total sessions other than available resources (free ports, memory, whatever).
Feb
23
comment Maximum number of users logged simultaneously into Linux
@OsamaHussain: /etc/ssh/ssh_config is the config file for the ssh client. If you install the "openssh-server" package you get the server, including the /etc/ssh/sshd_config file.
Feb
22
answered Windows 2008 NFS, find command not working recursively on unix client
Feb
21
answered How long does it take to fsck a volume?
Jan
27
awarded  linux
Dec
29
answered How to track down the file a process is executed from on disk?
Dec
29
answered Backup process flushes disk cache
Dec
29
answered Interpreting munin graph and committed memory
Dec
20
comment Linux Stealth Process
Do crackware authors think that naming an executable "stealth" will make it invisible to admins? :)
Dec
2
awarded  Nice Answer
Nov
8
answered How dangerous is NFS async when RAID BBU and UPS are present?
Nov
4
comment High system cpu load (%sys), system locks
Ah, you can check e.g. /proc/softirq; unfortunately I don't know of any tool that displays individual softirqs over time. Alternatively, run something like "dstat -ar --socket --tcp" when you get a spike and post the results.
Nov
4
comment High system cpu load (%sys), system locks
That %si corresponds to time spent in softirq handlers? Well, if you don't believe me or some other documentation you might find, you can read the kernel source code.
Nov
3
answered High system cpu load (%sys), system locks