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Jul
24
comment Effects of IW10 (initcwnd 10 initrwnd 10) on high speed LAN based TCP/IP communications?
IW10 can also increase retransmit rates due to it's more "bursty" behaviour. Google measured that increase being around 0.5%.
Jul
24
awarded  Disciplined
Jul
22
reviewed Approve How to securely join two networks together over the Internet?
Jul
22
reviewed Approve How to securely join two networks together over the Internet?
Jul
22
reviewed Approve How to securely join two networks together over the Internet?
Jul
21
answered centos doesn't reply to icmp request
Jun
25
reviewed Approve Cannot access network shares by hostname over SSL VPN
Jun
25
reviewed Approve PHP/FastCgi - Which is the threshold over which to use nginx instead of apache
Jun
25
reviewed Approve IPv6 users see different site than IPv4 users
Jun
2
comment Test if nginx variable is set
try set_if_empty from github.com/openresty/set-misc-nginx-module
Jun
1
comment strace not showing anything for thread at 100% 'system' CPU
have you tried perf?
May
30
awarded  Yearling
May
26
awarded  Great Question
Mar
5
comment High %sys utilization in Nginx cache node
If THP is causing issues that most likely means that you are doing too many memcpy/memmove operations (you have those in your perf report). That is probably because of your lua scripts. To further improve performance of the server you can try minimizing number of memory copies in your code.
Feb
19
answered Linux - NTP stopped working after recent update
Feb
10
comment Nginx uses both writev() and sendfile()
Also TLS will require using writev since (at least for now) kernel can not encrypt data for you.
Nov
29
awarded  Caucus
Nov
24
answered Oops in syslog and freeze the server with docker
Sep
30
awarded  Explainer
Sep
20
answered Linux Network tuning to prevent tcp rcvpruned and backlogdrop?