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Michael Hanselmann authored
We noticed that “ganeti-masterd” can use large amounts of memory,
especially on large clusters. Measurements showed a single PycURL client
using about 500 kB of heap memory (the actual usage depends on versions,
build options and settings).

The RPC client uses a per-thread HTTP client pool with one client per
node. At this time there are 41 non-main threads (25 for the job queue
and 16 for client requests). This means the HTTP client pools use a lot
of memory (ca. 200 MB for 10 nodes, ca. 1 GB for 50 nodes).

This patch disables the per-thread HTTP client pool. No cleanup of
unused code is done. That will be done in the master branch only.

Signed-off-by: default avatarMichael Hanselmann <hansmi@google.com>
Reviewed-by: default avatarIustin Pop <iustin@google.com>
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