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Historically, the input and output buffers of a check are allocated by hand during the startup, with a specific size (not necessarily the same than other buffers). But since the recent refactoring of the checks to rely exclusively on the tcp-checks and to use the underlying mux layer, this part is totally buggy. Indeed, because these buffers are now passed to a mux, they maybe be swapped if a zero-copy is possible. In fact, for now it is only possible in h2_rcv_buf(). Thus the bug concretely only exists if a h2 health-check is performed. But, it is a latent bug for other muxes. Another problem is the size of these buffers. because it may differ for the other buffer size, it might be source of bugs. Finally, for configurations with hundreds of thousands of servers, having 2 buffers per check always allocated may be an issue. To fix the bug, we now allocate these buffers when required using the buffer pool. Thus not-running checks don't waste memory and muxes may swap them if possible. The only drawback is the check buffers have now always the same size than buffers used by the streams. This deprecates indirectly the "tune.chksize" global option. In addition, the http-check regtest have been update to perform some h2 health-checks. Many thanks to @VigneshSP94 for its help on this bug. This patch should solve the issue #936. It relies on the commit "MINOR: tcpcheck: Don't handle anymore in-progress send rules in tcpcheck_main". Both must be backport as far as 2.2. bla |
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.. | ||
balance | ||
cache | ||
checks | ||
compression | ||
connection | ||
converter | ||
filters | ||
http-capture | ||
http-cookies | ||
http-errorfiles | ||
http-messaging | ||
http-rules | ||
log | ||
lua | ||
mailers | ||
mcli | ||
peers | ||
sample_fetches | ||
seamless-reload | ||
server | ||
spoe | ||
ssl | ||
stick-table | ||
stickiness | ||
stream | ||
webstats | ||
README |
* Regression testing for HAProxy with VTest * This little README file is about how to compile and run vtest test case files (VTC files) to test HAProxy for any regression. To do so, you will have to compile vtest program sources which depends on Varnish cache application sources. vtest, formerly varnishtest, is a very useful program which has been developed to test Varnish cache application. vtest has been modified in collaboration with Varnish cache conceptor Poul-Henning Kamp to support HAProxy in addition to Varnish cache. See also: doc/regression-testing.txt * vtest compilation * $ git clone https://github.com/vtest/VTest $ cd VTest $ make vtest Then vtest program may be found at the root directory of vtest sources directory. The Varnish cache manuals are located in 'man' directory of Varnish cache sources directory. You will have to have a look at varnishtest(7) and vtc(7) manuals to use vtest. Some information may also be found in doc/regression-testing.txt in HAProxy sources. Note that VTC files for Varnish cache may be found in bin/varnishtest/tests directory of Varnish cache sources directory which may be found here: https://github.com/varnishcache/varnish-cache * vtest execution * You must set HAPROXY_PROGRAM environment variable to give the location of the HAProxy program to test to vtest: $ HAPROXY_PROGRAM=<my haproxy program> vtest [-Dno-htx=] ... The HAProxy VTC files found in HAProxy sources may be run with the reg-tests Makefile target. You must set the VTEST_PROGRAM environment variable to give the location of the vtest program which has been previously compiled. $ VTEST_PROGRAM=<my vtest program> make reg-tests "reg-tests" Makefile target run scripts/run-regtest.sh script. To get more information about this script run it with --help option. Note that vtest is run with -t10 and -l option. -l option is to keep keep vtest temporary directory in case of failed test cases. core files may be found in this directory (if enabled by ulimit). * vtest patches for HAProxy VTC files * When producing a patch to add a VTC regression testing file to reg-tests directory, please follow these simple rules: - If your VTC file needs others files, if possible, use the same basename as that of the VTC file, - Put these files in a directory with the same name as the code area concerned by the bug ('peers', 'lua', 'acl' etc).