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Jan
15
answered Server virtual processors and processing units
Jan
13
comment kworker consuming +90% IO and zero disk write
You may want to use perf to find out what kworker is doing as a troubleshooting step.
Jan
13
comment Where is my RAM going?
Use slabtop to see if it's the dentry cache.
Jan
7
comment Linux is sending ARP requests to hosts in other subnets?
Something is probably wrong in the netmasks or routing table on host A.
Jan
6
answered Why wouldn't I want to enable swap?
Jan
6
comment svchost.exe -k regsvc using over 1.2 GB RAM
How did you determine that it was using over 1.2 GB of RAM? (Please be as specific as possible. What tool did you use? What exactly did it report?)
Jan
5
awarded  Nice Answer
Jan
5
comment Where did my RAM go?
@Benjamin I don't know any way to see what's in the dentry cache. But running strace may be instructive. Do you use libcurl? What's your app doing?
Jan
5
comment Where did my RAM go?
@Benjamin Follow my link for one example of how this can happen. Also, look at what the web application is actually doing.
Jan
5
answered Where did my RAM go?
Jan
2
answered What happen if a systemd service reach its MemoryLimit?
Jan
2
comment Clearing Memory (RAM) Cache on CentOS
Are you seriously asking how to get your computer to waste more memory rather than using it efficiently?
Jan
2
comment How many bits of entropy per byte read from /dev/random and /dev/urandom?
@DanielKauffman I have no idea what that means.
Jan
2
comment How many bits of entropy per byte read from /dev/random and /dev/urandom?
@DanielKauffman You can already read however many bytes you want/need from /dev/urandom directly. Hashing is really only helpful if you want to combine entropy from multiple sources.
Dec
31
answered How many bits of entropy per byte read from /dev/random and /dev/urandom?
Dec
30
comment Data Transfer Speed Hardware Config
@Alan When it maxed out, what maxed out? CPU? Memory? I/O?
Dec
30
comment multiple internet connection at office
@Krunal Support for enterpricey features like tunnels.
Dec
24
comment Iptables block connection from specific IP - to another IP
@Beginner Something is very wrong with your understanding of something because the comment above is incoherent. What does it mean for a host name to use an IP address as a DNS server? And what traffic are you trying to block? Traffic to a DNS server?
Dec
16
comment HP Procurve 2920 VLANs with DHCP cannot ping
That doesn't make sense. If the server already has an IP address inside 192.168.x.0, it shouldn't need a route. And if it doesn't have an IP address inside 192.168.x.0, it shouldn't know how to reach 192.168.x.2 without a route that would also work for the rest of 192.168.x.0/24.
Dec
11
comment Swap 99% but regular memory fine
What is swappiness set to?