3
votes
3answers
234 views

MySQL hangs if connection comes from outside the LAN

I have a MySQL Server operating just fine if I access him from his local LAN (192.168.100.0/24). If I try to access hin from another LAN (192.168.113.0/24 in this case) it hangs for a really long time ...
0
votes
1answer
101 views

strace vs. log4cxx performance hit?

I need to debug some issue on a production server, and I'm trying to decide whether to use strace or the log4cxx logging library; one crucial characteristic I need to know before, is which of the two ...
1
vote
1answer
558 views

which pid to use to strace my apache

My apache2 is using running slowly. A single PHP file is takes long time to process. The server is live. I dont want to restart it. So I thought I attach strace to it and check whats happening. So ...
6
votes
3answers
2k views

Monitor system CPU / system calls in Linux

I have a couple processes that are eating up a lot of system CPU time (as determined by looking at vmstat). Is there an easy way to find out what kind of system calls are being made? I know there ...
1
vote
1answer
112 views

Performance problem when launching GUI applications under gnome while connected to VPN

I'm experiencing a severe performance problem starting apps but only when connected to my office VPN. It appears to be related to gnome-session. I believe the following is the relevant strace from ...