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Date:   Tue, 22 Sep 2020 16:14:25 +0530
From:   Krishnamraju Eraparaju <krishna2@chelsio.com>
To:     Sagi Grimberg <sagi@grimberg.me>, Max Gurtovoy <maxg@mellanox.com>
Cc:     linux-rdma@vger.kernel.org,
        Potnuri Bharat Teja <bharat@chelsio.com>
Subject: reduce iSERT Max IO size
Message-ID: <20200922104424.GA18887@chelsio.com>
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Hi,

Please reduce the Max IO size to 1MiB(256 pages), at iSER Target.
The PBL memory consumption has increased significantly after increasing
the Max IO size to 16MiB(with commit:317000b926b07c).
Due to the large MR pool, the max no.of iSER connections(On one variant
of Chelsio cards) came down to 9, before it was 250.
NVMe-RDMA target also uses 1MiB max IO size.

Thanks,
Krishnam Raju.