On Thursday 16 February 2012 15:18:05 Piotr Kandziora wrote: > Hi, > > I have two servers with dedicated replication link (WiFI - 48Mbit/s). My > clients are connecting via other network link (100Mbit/s) to SAMBA service.
Rofl! Sorry, spend the 10€ per server to get them dedicated 100MBit cards. It will do you a great favour. But unless you spend 20€ per server for Gigabit cards, it will still be slow as hell... The wifi is not only bad for your throughput: 48MBit/s is low compared to 120MBytes/s for direct disk access. Its actually half of that because wifi is half-duplex by design. 100MBit will be a bit better as you then have ~12MByte/s per direction. Only Gigabit will really keep up with the throughput of the disk. Additionally wifi has the ethernet-latency plus the wireless-latency plus the latency of half-duplex and collision-detection. It is a) no wonder your users will be complaining about the poor performance (mine are still complaining while I have a dedicated GB-link) and b) its no wonder drbd complains and stops the sync... Have fun, Arnold
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