* [ANN] raindrops 0.18.0 - real-time stats for preforking Rack servers
@ 2017-03-23 2:48 5% Eric Wong
0 siblings, 0 replies; 3+ results
From: Eric Wong @ 2017-03-23 2:48 UTC (permalink / raw)
To: ruby-talk, raindrops-public; +Cc: unicorn-public, Simon Eskildsen, Jeremy Evans
raindrops is a real-time stats toolkit to show statistics for Rack HTTP
servers. It is designed for preforking servers such as unicorn, but
should support any Rack HTTP server on platforms supporting POSIX shared
memory. It may also be used as a generic scoreboard for sharing atomic
counters across multiple processes.
* https://bogomips.org/raindrops/
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* git clone git://bogomips.org/raindrops.git
* https://bogomips.org/raindrops/NEWS.atom.xml
* Demo site: https://raindrops-demo.bogomips.org:8443/
Changes:
raindrops 0.18.0
The most notable feature of this release is the addition of
FreeBSD and OpenBSD TCP_INFO support. This includes the
Raindrops::TCP for portably mapping TCP state names to
platform-dependent numeric values:
https://bogomips.org/raindrops/Raindrops.html#TCP
Thanks to Jeremy Evans and Simon Eskildsen on the
unicorn-public@bogomips.org mailing list for inspiring
these changes to raindrops.
There's also a few internal cleanups, and documentation
improvements, including some fixes to the largely-forgotten
Raindrops::Aggreage::PMQ class:
https://bogomips.org/raindrops/Raindrops/Aggregate/PMQ.html
20 changes since 0.17.0:
test_inet_diag_socket: fix Fixnum deprecation warning
TODO: add item for IPv6 breakage
ext: fix documentation for C ext-defined classes
TCP_Info: custom documentation for #get!
TypedData C-API conversion
test_watcher: disable test correctly when aggregate is missing
tcp_info: support this struct under FreeBSD
define Raindrops::TCP hash for TCP states
linux_inet_diag: reduce stack usage and simplify
avoid reading errno repeatedly
aggregate/pmq: avoid false sharing of lock buffers
aggregate/pmq: remove io-extra requirement
aggregate/pmq: avoid File#stat allocation
Merge remote-tracking branch 'origin/freebsd'
Merge remote-tracking branch 'origin/aggregate-pmq'
doc: remove private email support address
doc: update location of TCP_INFO-related stuff
build: avoid olddoc for building the RubyGem
doc: document Raindrops::TCP hash
aggregate/pmq: update version numbers for Ruby and Linux
^ permalink raw reply [relevance 5%]
* [PATCH 0/3] aggregate/pmq: various fixes and cleanups
@ 2017-03-16 3:14 7% Eric Wong
2017-03-16 3:14 6% ` [PATCH 2/3] aggregate/pmq: remove io-extra requirement Eric Wong
0 siblings, 1 reply; 3+ results
From: Eric Wong @ 2017-03-16 3:14 UTC (permalink / raw)
To: raindrops-public
Now that we rely on Ruby 1.9+, we can rely on IO.copy_stream
and remove the io-extra requirement. Future Rubies may even
have pread/pwrite support natively.
Eric Wong (3):
aggregate/pmq: avoid false sharing of lock buffers
aggregate/pmq: remove io-extra requirement
aggregate/pmq: avoid File#stat allocation
lib/raindrops/aggregate/pmq.rb | 22 ++++++++++++++--------
raindrops.gemspec | 1 -
2 files changed, 14 insertions(+), 9 deletions(-)
^ permalink raw reply [relevance 7%]
* [PATCH 2/3] aggregate/pmq: remove io-extra requirement
2017-03-16 3:14 7% [PATCH 0/3] aggregate/pmq: various fixes and cleanups Eric Wong
@ 2017-03-16 3:14 6% ` Eric Wong
0 siblings, 0 replies; 3+ results
From: Eric Wong @ 2017-03-16 3:14 UTC (permalink / raw)
To: raindrops-public
IO.copy_stream is standard in 1.9+ and can use pread when
given an offset. We do not need to use pwrite with fcntl
locking, actually.
---
lib/raindrops/aggregate/pmq.rb | 12 ++++++++----
raindrops.gemspec | 1 -
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/lib/raindrops/aggregate/pmq.rb b/lib/raindrops/aggregate/pmq.rb
index f543302..5a6a1f6 100644
--- a/lib/raindrops/aggregate/pmq.rb
+++ b/lib/raindrops/aggregate/pmq.rb
@@ -3,8 +3,8 @@
require "aggregate"
require "posix_mq"
require "fcntl"
-require "io/extra"
require "thread"
+require "stringio"
# \Aggregate + POSIX message queues support for Ruby 1.9 and \Linux
#
@@ -19,7 +19,6 @@
# or libraries:
#
# * aggregate (tested with 0.2.2)
-# * io-extra (tested with 1.2.3)
# * posix_mq (tested with 1.0.0)
#
# == Design
@@ -84,6 +83,7 @@ def initialize(params = {})
@wr = File.open(t.path, "wb")
@rd = File.open(t.path, "rb")
end
+ @wr.sync = true
@cached_aggregate = @aggregate
flush_master
@mq_send = if opts[:lossy]
@@ -151,7 +151,10 @@ def aggregate
@cached_aggregate ||= begin
flush
Marshal.load(synchronize(@rd, RDLOCK) do |rd|
- IO.pread rd.fileno, rd.stat.size, 0
+ dst = StringIO.new
+ dst.binmode
+ IO.copy_stream(rd, dst, rd.stat.size, 0)
+ dst.string
end)
end
end
@@ -163,7 +166,8 @@ def flush_master
dump = Marshal.dump @aggregate
synchronize(@wr, WRLOCK) do |wr|
wr.truncate 0
- IO.pwrite wr.fileno, dump, 0
+ wr.rewind
+ wr.write(dump)
end
end
diff --git a/raindrops.gemspec b/raindrops.gemspec
index c00a6b5..4651fa9 100644
--- a/raindrops.gemspec
+++ b/raindrops.gemspec
@@ -22,7 +22,6 @@
s.test_files = test_files
s.add_development_dependency('aggregate', '~> 0.2')
s.add_development_dependency('test-unit', '~> 3.0')
- s.add_development_dependency('io-extra', [ '~> 1.2', '>= 1.2.3'])
s.add_development_dependency('posix_mq', '~> 2.0')
s.add_development_dependency('rack', [ '>= 1.2', '< 3.0' ])
s.add_development_dependency('olddoc', '~> 1.0')
--
EW
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2017-03-16 3:14 7% [PATCH 0/3] aggregate/pmq: various fixes and cleanups Eric Wong
2017-03-16 3:14 6% ` [PATCH 2/3] aggregate/pmq: remove io-extra requirement Eric Wong
2017-03-23 2:48 5% [ANN] raindrops 0.18.0 - real-time stats for preforking Rack servers Eric Wong
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