3,407 reputation
31436
bio website yandex.ru/search
location Russia
age 27
visits member for 5 years, 6 months
seen 2 days ago

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

Jun
29
comment Does orientation affect hard drive lifespan?
May it be that just 99% of all laptops have HDD mounted upside down, so there is actually no correlation at all?
Jun
27
comment Yesterday-access.log is pointing to a different directory
This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post.
May
5
comment Chef stop and start service in sequence
Oops... My bad. Mistakenly rejected edit. Actually new versions of chef support not only resources(:service => "apache") but also "service[apache]" syntax. Just verified with 11.4.4. See docs at: docs.opscode.com/resource_common_notifications.html
Apr
22
comment ack-grep to ack in ubuntu
Am I the only one who thinks this is not secure?
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
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
Dec
23
comment HPET missing from available clocksources on CentOS
Try upgrading BIOS to 1.0b
Dec
22
comment Tune Linux kernel against SYN flood attack
You could just give an example of some Linux compile-time tunables (i.e. some of them gist.github.com/2407652) it would be more relevant.
Dec
21
comment Tune Linux kernel against SYN flood attack
Digital Unix? Is it even relevant? Question is definitely about Linux and judging by file names Tru64 has a BSD derivative TCP/IP stack.
Oct
30
comment FreeBSD Listen Queue Overflows - can't increase max queue size
Also, did you restart nginx after changing kern.ipc.somaxconn?
Sep
18
comment How are r— directory permissions supposed to work on Linux?
I suppose you can explain mode_t thing a little bit more (esp. part where permissions and file type are stored in same 32bit field)
Sep
4
comment What is the “in-the-wire” size of a ethernet frame? 1518 or 1542?
should we get a little more "physical"? en.wikipedia.org/wiki/8b/10b_encoding
Jul
12
comment Tell the linux kernel to put a file in the disk cache?
There is a tool for that: hoytech.com/vmtouch
Jul
1
comment Anyone else experiencing high rates of Linux server crashes during a leap second day?
FYI, blogpost about Google hacking it's ntpd servers to support "seamless" leap second: Time, technology and leaping seconds
Jun
21
comment GPG - why am I encrypting with subkey instead of primary key?
To make long story short: one should never ever encrypt and sign using the same key otherwise bad things will happen (c)
Jun
18
comment freebsd/vsftpd: file size greater 64kb upload not completing
MTU/MSS troubles? Are those troublesome customers behind some kind of PPPoE/PPTP link encapsulation? I suppose next step is to analyze tcpdumps from BOTH sides.