Feature #5183: [PATCH] openssl: add OP_NO_COMPRESSION constant

• Status: Closed
• Assignee: MartinBosslet (Martin Bosslet)
• Target version: 1.9.3

[normalperson (Eric Wong)]

Disabling OpenSSL compression can save memory since zlib buffers
enforce a rather large per-connection overhead. For
memory-constrained systems that have OpenSSL built against zlib,
there can be a drastic reduction in memory usage with 1000 open
connections:

Compression enabled
VmRSS: 596132 kB
Compression disabled
VmRSS: 21924 kB

The above was generated with openssl 1.0.0.d-3 on Debian testing
(x86_64). The NOCOMP environment variable controls compression
in the attached script.

If you prefer: git pull git://bogomips.org/ruby openssl-no-compression

• Status changed from Open to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r32973.
Eric, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• ext/openssl/ossl_ssl.c: Support disabling OpenSSL compression.
• test/openssl/test_ssl.rb: Add a test for it.
  Thanks to Eric Wong for the patch.
  [Ruby 1.9 - Feature #5183] [ruby-core:38911]

[MartinBosslet (Martin Bosslet)]

• Target version changed from 2.0.0 to 1.9.3

I can only repeat what Motohiro said the other day - thanks a lot
for your contribution, Eric!

I also backported this to 1.9.3, as I can only see benefit in this
patch.

It shouldn't affect the stability of 1.9.3. But please object if
anyone thinks different, then I would revert the commit right away.

[kosaki (Motohiro KOSAKI)]

2011/8/15 Martin Bosslet [e-mail]:

Issue #5183 has been updated by Martin Bosslet.

Target version changed from 1.9.x to 1.9.3

I can only repeat what Motohiro said the other day - thanks a lot
for your contribution, Eric!

I also backported this to 1.9.3, as I can only see benefit in this
patch.

It shouldn't affect the stability of 1.9.3.

At least, I agree with you. :)

But please object if
anyone thinks different, then I would revert the commit right away.