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Feature #4753

closed

increase number of outstanding async writes when sync task is waiting

Added by Christopher Siden over 8 years ago. Updated about 8 years ago.

Status:
Closed
Priority:
Normal
Category:
zfs - Zettabyte File System
Start date:
2014-04-14
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

Matt Ahrens:

When a sync task is waiting for a txg to complete, we should hurry it along by
increasing the number of outstanding async writes (i.e. make
vdev_queue_max_async_writes() return a larger number).  Initially we might just
have a tunable for "minimum async writes while a synctask is waiting" and set
it to 3.

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