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 Yearling
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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?
May
30
awarded  Yearling
Apr
24
comment FreeBSD Established Connections Maxing out at 300
It's most likely application scalability issue not connected to kernel.
Apr
24
comment “show_signal_msg: N callbacks suppressed” then pegged at 100% and machine unresponsive
No, I just suggested that "unresponsiveness" can be connected to codedumps being written to disk.
Apr
23
comment “show_signal_msg: N callbacks suppressed” then pegged at 100% and machine unresponsive
If 12 callbacks from show_signal_msg were suppressed that means that something segfaulted 13 times in a row. Do you have coredumps enabled on that box?
Apr
17
comment kvm hypervisor kernel panic
Memory failure? What does SEL (System Event Log) says?
Apr
11
reviewed Reject What is the t in drwxrwxrwt or the value of t?