Client connection timeout checkout/export/update

  Hello,

I am hosting a lot of repositories for my company projects since years and
since server upgrade to 1.8 (from 1.6) some users report connection timeout
when running their project checkout or export.

My server is Debian Jessie, first running provided 1.8.10 packages but now
WanDisco 1.8.16 packages. Protocol is either https or http, with WebDAV
module in Apache 2.4.10 (from debian)

Reports concern TortoiseSVN but I also reproduce connection timeout from
Linux with latest 1.9.4 client package from WanDisco.

checkout or export often stucks when processing zip files.

What is even strange, svn process segfaults when running under strace, and
also segfaults without strace some time.

When interrupting client, another invocation gets further but stucks to
other files.

May it be possible these troubles come from 1.8 server-side caching logic
or compression ?

Thank you in advance for your help

-- 
Yves Martin