* [ANN] yahns 1.17.0 -_- sleepy app server for Ruby
@ 2019-04-22 7:37 4% Eric Wong
0 siblings, 0 replies; 3+ results
From: Eric Wong @ 2019-04-22 7:37 UTC (permalink / raw)
To: ruby-talk, yahns-public
Earth day release of a server designed for low energy use!
A Free Software, multi-threaded, non-blocking network
application server designed for low _idle_ power consumption.
It is primarily optimized for applications with occasional users
which see little or no traffic. yahns currently hosts Rack/HTTP
applications, but may eventually support other application
types. Unlike some existing servers, yahns is extremely
sensitive to fatal bugs in the applications it hosts.
* git clone https://yhbt.net/yahns.git
* https://yhbt.net/yahns.git/about/
* https://yhbt.net/yahns/NEWS.atom.xml (supported by most "RSS" readers)
* we only accept plain-text email yahns-public@yhbt.net
* and archive all the mail we receive: https://yhbt.net/yahns-public/
* nntp://news.public-inbox.org/inbox.comp.lang.ruby.yahns
lrg nabgure ubeevoyl-anzrq freire :>
Changes:
This releases includes a few kqueue-related bugfixes from
Lin Jen-Shin <godfat@godfat.org>. There's also some
shutdown_timeout-related bugfixes and some cleanups to
reduce dependencies on kgio.
extras/exec_cgi and extras/autoindex both got some minor
updates; the latter of which defaults to a dark scheme to save
power on OLED and CRT displays (it is Earth Day, after all :>)
Eric Wong (25):
doc: fix git URLs in README and HACKING
http_client: do not warn on do_pread overreach
remove IO#close_on_exec= calls
yahns/worker: shrink pipe under Linux
test/test_extras_exec_cgi.rb: improve test reliability
extras/exec_cgi: remove kgio dependency
extras/exec_cgi: update copyright year and use SPDX
extras/exec_cgi: @body_tip is always set
extras/exec_cgi: support Process.spawn options (e.g. RLIMIT_*)
server_mp: favor "Kernel#select" instead of "IO.select"
server_mp: remove redundant srand call
extras/exec_cgi: remove unecessary .freeze calls
server: respect shutdown_timeout
server: extra shutdown timeout debugging
wbuf: use IO#write directly in Ruby 2.5+ for writev
worker: rely on F_SETPIPE_SZ to set mininum value
remove calls to kgio_wait_* able
do not shutdown until listeners are all stopped
README: remove SMTP-based subscription info
sigevent_*: fixup non-eventfd path
README: note HTTPS support for HTTP/1.1
extras/autoindex: use dark colors by default
doc: update homepage to point to cgit install
doc: update wording to avoid "mailing list"
doc: remove inaccurate comment about "GNU-ism"
Lin Jen-Shin (2):
Add QueueQuitter#closed? to queue_quitter_pipe.rb
@srv.shutdown could raise Errno::ENOTCONN
Please note the disclaimer:
yahns is extremely sensitive to fatal bugs in the apps it hosts. There
is no (and never will be) any built-in "watchdog"-type feature to kill
stuck processes/threads. Each yahns process may be handling thousands
of clients; unexpectedly killing the process will abort _all_ of those
connections. Lives may be lost!
yahns hackers are not responsible for your application/library bugs.
Use an application server which is tolerant of buggy applications
if you cannot be bothered to fix all your fatal bugs.
*zzzzzzz*
^ permalink raw reply [relevance 4%]
* [PATCH 2/2] server: extra shutdown timeout debugging
2018-12-30 2:33 5% [PATCH 0/2] shutdown stuff Eric Wong
@ 2018-12-30 2:33 7% ` Eric Wong
0 siblings, 0 replies; 3+ results
From: Eric Wong @ 2018-12-30 2:33 UTC (permalink / raw)
To: yahns-public
Still not sure what's going on with the proxy_pass code,
but something in the Fdmap code is causing shutdowns to
take way longer than expected...
---
lib/yahns/server.rb | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/lib/yahns/server.rb b/lib/yahns/server.rb
index 128b894..2ad65a9 100644
--- a/lib/yahns/server.rb
+++ b/lib/yahns/server.rb
@@ -500,7 +500,18 @@ def dropping(fdmap)
if drop_acceptors[0] || fdmap.size > 0
timeout = @shutdown_expire < Yahns.now ? -1 : @shutdown_timeout
n = fdmap.desperate_expire(timeout)
- return false if timeout == -1
+ return false if n == 0 # all done!
+
+ # FIXME: sometimes shutdowns take a long time when using proxy_pass
+ # Still not sure what's going on and it takes a while to reproduce..
+ if timeout == -1
+ @logger.error(
+"exiting on shutdown_timeout=#@shutdown_timeout #{fdmap.size} FD(s) remain"
+ )
+
+ system('lsof', '-n', '-p', "#$$") if RUBY_PLATFORM =~ /linux/
+ return false
+ end
$0 = "yahns quitting, #{n} FD(s) remain"
true
--
EW
^ permalink raw reply related [relevance 7%]
* [PATCH 0/2] shutdown stuff
@ 2018-12-30 2:33 5% Eric Wong
2018-12-30 2:33 7% ` [PATCH 2/2] server: extra shutdown timeout debugging Eric Wong
0 siblings, 1 reply; 3+ results
From: Eric Wong @ 2018-12-30 2:33 UTC (permalink / raw)
To: yahns-public
Graceful shutdown is still a bit tricky...
Eric Wong (2):
server: respect shutdown_timeout
server: extra shutdown timeout debugging
lib/yahns/server.rb | 13 +++++++++++++
1 file changed, 13 insertions(+)
^ permalink raw reply [relevance 5%]
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2019-04-22 7:37 4% [ANN] yahns 1.17.0 -_- sleepy app server for Ruby Eric Wong
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