3,397 reputation
31437
bio website yandex.ru/search
location Russia
age 27
visits member for 5 years, 6 months
seen Dec 11 at 22:58

Mad Skillz:

 - Programming
 - System Administration
 - L2/L3/L4 network knowledge
 - FreeBSD and Linux experience
 - Highload passion
 - HPC(GPFS/Infiniband) user
 - IPv6 evangelist
 - nginx fan
 - p2p lover

Apr
26
revised FreeBSD performance tuning. Sysctls, loader.conf, kernel
Formatting, clarifications, thanks and disclaimer
Apr
26
revised FreeBSD performance tuning. Sysctls, loader.conf, kernel
added 273 characters in body
Apr
22
comment ack-grep to ack in ubuntu
Am I the only one who thinks this is not secure?
Apr
8
revised Apache2 reload and System Crash
added 14 characters in body
Apr
8
revised Apache2 reload and System Crash
added 31 characters in body
Apr
8
awarded  Analytical
Apr
8
answered Apache2 reload and System Crash
Apr
3
awarded  Stellar Question
Mar
3
comment Segfault PHP-FPM, Nginx, Freebsd
What is you APC version?
Feb
28
comment Segfault PHP-FPM, Nginx, Freebsd
Also, if you are not confident about debugging C/C++ code then you better off with something like updating APC/php from ports maybe with even slightly different make config
Feb
28
comment Segfault PHP-FPM, Nginx, Freebsd
set sysctl kern.coredump=1 and sysctl kern.corefile="/var/tmp/%U.%N.core" - path should have according permissions (i.e. 1777). Also don't forget to turn them off after debug.
Feb
25
comment Segfault PHP-FPM, Nginx, Freebsd
Turn on coredumps and analyze segfault dump with gdb - for the start simple bt is enough
Feb
25
comment Segfault PHP-FPM, Nginx, Freebsd
Do you use APC (pecl.php.net/package/APC) ?
Feb
7
revised FreeBSD performance tuning. Sysctls, loader.conf, kernel
added KSTACK_PAGES parameter
Feb
5
awarded  Nice Answer
Feb
5
revised Kernel Errors Present: EXT4-fs
proper lkml link
Feb
1
comment Linux process swap usage is greater than the overall system swap usage
Very accurate: one can take a look at man top from Debian/Ubuntu procps package which has patched(./debian/patches/top_1_swap.patch) man page that explains precisely how SWAP is computed in top: manpages.ubuntu.com/manpages/precise/en/man1/top.1.html
Feb
1
answered How to differentiate intentional reboot and power failure from logs
Jan
30
revised Why change net.inet.tcp.tcbhashsize in FreeBSD?
deleted 24 characters in body
Jan
30
revised FreeBSD performance tuning. Sysctls, loader.conf, kernel
added 116 characters in body