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Extend pipe buffer size error message

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The message now logs the instructions on how to increase the per-process
page limit for pipe buffers. This can happen if fs.pipe-max-size
multiplied by the number of workers exceeds the value of
fs.pipe-user-pages-soft multiplied by 4096.
This commit is contained in:
Markus Mäkelä
2019-09-21 10:20:39 +03:00
parent 6830f517b4
commit 8ac11a97c2
1 changed files with 3 additions and 1 deletions
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4
maxutils/maxbase/src/messagequeue.cc
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@ -148,7 +148,9 @@ MessageQueue* MessageQueue::create(Handler* pHandler)
*/ */
if (fcntl(fds[0], F_SETPIPE_SZ, this_unit.pipe_max_size) == -1) if (fcntl(fds[0], F_SETPIPE_SZ, this_unit.pipe_max_size) == -1)
{ {
MXB_WARNING("Failed to increase pipe buffer size to '%d': %d, %s", MXB_WARNING("Failed to increase pipe buffer size to '%d': %d, %s. "
"Increase pipe-user-pages-soft (sysctl fs.pipe-user-pages-soft) "
"or reduce pipe-max-size (sysctl fs.pipe-max-size).",
this_unit.pipe_max_size, errno, mxb_strerror(errno)); this_unit.pipe_max_size, errno, mxb_strerror(errno));
} }
else else