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Jan
27
answered Anybody tried to use graphic card as a precision clock on a Windows server?
Jan
27
comment Is there a way to get an email when system starts using swap space for memory?
You want to know if your server isn't responding or isn't responding well. Don't try to look for memory usage specifically. (Except perhaps in addition to basic response monitoring.)
Jan
27
answered Iperf udp test show only 50 % of bandwidth
Jan
26
comment Linux: how many disk I/O does it take to read a file? How to minimize it?
Exactly. This is a consequence of very limited RAM and a filesystem design based around the idea that RAM is scarce and precious.
Jan
26
comment FTP Transfer Very Slow When Windows Firewall Enabled
It's not unusual for more than one thing to be wrong. Trust me, it's much better to fix things before they cause breakage than after. What else is the firewall blocking?
Jan
26
answered redundant network handling in linux box
Jan
26
answered Apache+FastCGI Timeout Error: “has failed to remain running for 30 seconds given 3 attempts, its restart interval has been backed off to 600 seconds”
Jan
26
comment Linux Server eating all my memory
You don't have to compile the kernel, you just have to install the new parameters to your boot loader. With grub2, that's a script. What distribution is this?
Jan
26
comment Linux Server eating all my memory
It depends what boot loader you use to boot the kernel. For grub, it's usually in /boot/grub.conf. Some distributions have a separate file that holds kernel parameters which you have to edit and then 'compile' or install somehow.
Jan
26
comment Linux Server eating all my memory
You can change the kernel command line (add mem=512M). You can ask the administrator of the machine to reduce the memory made available to the OS.
Jan
26
answered Linux Server eating all my memory
Jan
25
comment FTP Transfer Very Slow When Windows Firewall Enabled
Without ICMP, the FTP packets may get fragmented, which results in greater packet loss and reduced network utilization efficiency. (See my link.)
Jan
25
answered FTP Transfer Very Slow When Windows Firewall Enabled
Jan
25
comment Why did MySQL suddenly move it's 'real' memory usage to swap and freed up the difference? img attached
No. It will not shrink. This is data that will most likely never be accessed, but the system cannot prove it will never be accessed. So the system has to keep it on disk just in case the application ever reads it. You should not care about large page size if there's low paging activity.
Jan
25
answered Why did MySQL suddenly move it's 'real' memory usage to swap and freed up the difference? img attached
Jan
25
comment FTP Transfer Very Slow When Windows Firewall Enabled
Check to see if ICMP is blocked.
Jan
24
awarded  Nice Answer
Jan
23
comment IP Address Conflict with Router/Firewall
@jwegner When you sniff ARP traffic, do you see an ARP for 192.2.40.17 from the router? Or do you not see such an ARP? (The answer to that question splits the problem space in half.)
Jan
21
comment What is the best approach to wiping all data off a HDD instantly?
The NSA uses a grenade and an enclosure specifically designed for this purpose. I really do know this from experience.
Jan
19
comment Name Server for a domain name is its own sub domain - How to do that?
The difference is that they'll need the IP addresses as well and they'll need to add glue records. When nameservers serve their own zone, you can't very well ask them for their own IP addresses. (Because you need to already know the IP address in order to query.)