Startup 3.5x faster #2099
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Startup 3.5x faster #2099
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Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)! [ghstack-poisoned]
zdevito
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Dec 10, 2025
Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)! ghstack-source-id: 328300953 Pull Request resolved: #2099
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Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)! [ghstack-poisoned]
zdevito
added a commit
that referenced
this pull request
Dec 10, 2025
Pull Request resolved: #2099 Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. ghstack-source-id: 328496691 @exported-using-ghexport Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)!
Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)! [ghstack-poisoned]
zdevito
added a commit
that referenced
this pull request
Dec 10, 2025
Pull Request resolved: #2099 Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. ghstack-source-id: 328511693 @exported-using-ghexport Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)!
Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)! [ghstack-poisoned]
zdevito
added a commit
that referenced
this pull request
Dec 10, 2025
Pull Request resolved: #2099 Fixing various simple things that claude helped find. 1.7 seconds --> .5 seconds. * Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second! * We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in `inf` for the first message, and just sends it, that way we do not add another 50 ms on every process start. * Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes. ghstack-source-id: 328518444 @exported-using-ghexport Differential Revision: [D88810033](https://our.internmc.facebook.com/intern/diff/D88810033/) **NOTE FOR REVIEWERS**: This PR has internal Meta-specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D88810033/)!
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Stack from ghstack (oldest at bottom):
Fixing various simple things that claude helped find.
1.7 seconds --> .5 seconds.
Don't start the exponential backoff for initial connections at 50ms. We hit these like 20 times in a row and it adds up to 1/2 second!
We need to rethink the batched aggregation interval. We probably need a simple predictor that assumes the average time between messages in
inffor the first message, and just sends it, that way we do not add another 50 ms on every process start.Do not import ipython to check if ipython is active. If it isn't active this adds 1/2 second to startup time because it happens in three processes.
Differential Revision: D88810033
NOTE FOR REVIEWERS: This PR has internal Meta-specific changes or comments, please review them on Phabricator!