Re: TCP server app performance

2018-08-15 Thread Michio Honda
On 08/14/2018 09:30 PM, Navdeep Parhar wrote: On 8/12/18 9:50 AM, Honda Michio wrote: Hi, I'm measuring TCP server app performance using my toy web server. It just accept TCP connections and responds back HTTP OK to the clients. It monitors sockets using kqueue, and processes each ready

Re: TCP server app performance

2018-08-12 Thread Michio Honda
Hi Rozhuk, I only use a single CPU core and thread, so SO_REUSEPORT_LB has no effect. Also, I already accept() in loop until getting error, but this is not a point as I use persistent TCP connections... Cheers, - Michio On 08/12/2018 07:50 PM, Rozhuk Ivan wrote: On Sun, 12 Aug 2018

Shutdown fails when there is an active kthread pinned to CPU core 0

2015-07-29 Thread Michio Honda
Hi, When I create a kthread (kthread_add()) and pin it to CPU 0 (sched_bind() in the beginning of its worker function), shutdown (from the command line) is stuck on a message of Waiting (max 60 seconds) for system process `vnlru' to stop..”. If I pin it to CPU 1 there is no problem. I’m using

Re: Changing CPU frequency for Xeon processors

2013-05-27 Thread Michio Honda
Thanks Eric, in case of HP Proliant DL120 G7 server, BIOS's configuration needs to be OS Control Mode. The similar would apply to other systems. Cheers, - Michio On May 18, 2013, at 10:07 PM, Eric van Gyzen wrote: On 05/18/2013 10:09 AM, Michio Honda wrote: Hi, I'm trying to experiment

Changing CPU frequency for Xeon processors

2013-05-18 Thread Michio Honda
Hi, I'm trying to experiment with downclocking CPU. My environment is 10.0-CURRENT amd64. However, my CPU (Xeon E31220) seems not to be supported by the cpufreq module, thus dmesg shows: est0: Enhanced SpeedStep Frequency Control on cpu0 est: CPU supports Enhanced Speedstep, but is not