kernel mem for one socket connection.

Sushil Agrawal (sushil@cse.iitk.ac.in)
Fri, 10 Sep 1999 17:43:42 +0530 (IST)

Hi,
How much kernel memory does a connected socket occupy? I know of
following :
For the fields which are declared pointer to some structure, i am taking
the size of that structure because eventually it will be kmalloced().

- the file table entry (struct file, struct file_operations, struct
dentry) = 260 bytes.

- the inode table (struct inode, struct inode_operations, struct
super_block, struct file_lock) >= 716 bytes.

- struct socket + struct proto_ops = 104 bytes.

Other structures in the network subsystem for a connected socket - How
much ?

Thanks,
Sushil.

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