With this change,
pkill -SIGUSR1 -f runtornado
will dump the stack and SIGUSR2 will enable an interactive debugging
session.
This fixes#613 for Tornado which was the original motive for that
ticket; I'm not sure whether we want to do this for our Django
processes as well, but it would be easy to do so if we did.
(imported from commit a7de7c6070f4bf0404bed6f434e6a6b291d66a26)
Even though they look like images, they're not -- you need to
append ?dl=1 to get the image version.
(imported from commit 2a05e7c58f475c908687110d9191f8709425c660)
At Ksplice we used /usr/bin/python because we shipped dependencies as Debian /
Red Hat packages, which would be installed against the system Python. We were
also very careful to use only Python 2.3 features so that even old system
Python would still work.
None of that is true at Humbug. We expect users to install dependencies
themselves, so it's more likely that the Python in $PATH is correct. On OS X
in particular, it's common to have five broken Python installs and there's no
expectation that /usr/bin/python is the right one.
The files which aren't marked executable are not interesting to run as scripts,
so we just remove the line there. (In general it's common to have libraries
that can also be executed, to run test cases or whatever, but that's not the
case here.)
(imported from commit 437d4aee2c6e66601ad3334eefd50749cce2eca6)
Previously we were doing 100 queries for new messages being sent to
the main hacker school channels; they were faster than many similar
instances because they were all done within 1 transaction, but still,
send_message_backend would be spending up to 200ms (and 148 queries)
querying the database with the previous code on prod; this new version
should do a fixed number of database queries per message.
(imported from commit 3799e63aebb6f017932ddb0fe1f6209281c0ddcf)
To work around the issue we're having with queue draining between
parallel blocking connections, use the same rabbitmq queue for both
activity and presence events, keyed on a 'type' flag in the message
itself.
(imported from commit 188e8fda1695734e52c5740db2195072cfc81479)
This cuts the MIT Zephyr home page load time and also #subscriptions
database-sourced load time for me from about a second to about 50ms on
my laptop. The home page still takes about 600ms to load due to
templating.
(imported from commit 1cfd8c750301abe6b6a881be4b2857532be947ec)
SimpleQueueClient was not thread-safe as the pika method
calls that we are using might disconnect and end up in a bad
state if two threads enqueue messages at the same time.
In order to avoid this, each user of the rabbitmq queue
gets its own instance of a SimpleQueueClient.
(imported from commit 694083b75cd58a60b8de282a8f40eb92a864c5ce)
Note: When deploying, restarting the process-user-activity-commandline script is needed
(imported from commit 63ee795c9c7a7db4a40170cff5636dc1dd0b46a8)
Adds a new db table for storing presences, and an API for setting
an individual user's idleness as well as fetching all idle status
for all users in a realm
(imported from commit 5aad3510d4c90c49470c130d6dfa80f0d36b0057)
Code like this is dangerous:
class SimpleQueue(object):
queues = set()
because all instances will share the same 'queues' set object.
We don't really need multiple instances, but neither is there a reason to break
them. So do the normal Python thing instead.
(imported from commit a56bb8414dd549cfd312c9565df198cf9d20f08a)
This will give us flexibility in the future to add new properties to the
list.
In order to support that, we now do a list comprehension rather than just
returning the gather_subscriptions list in get_stream_colors.
(imported from commit a3c0f749a3320f647440f800105942434da08111)
