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SNC 450x User’s Guide
109
TCP/IP Window and Buffer Sizes
The TCP/IP windows and buffer sizes controls the amount of data gathered together for processing. The
larger the window and buffer size, the less processing power required for processing the data.
Linux Configuration
The configuration of these parameters is through the “/proc” interface. For example, the following shell script
sets the window and I/O buffer sizes to 512K.
#!/bin/sh
MAX_BUF=524288
echo "Configuring socket parameters TO 512k "
echo "4096 $MAX_BUF $MAX_BUF" > /proc/sys/net/ipv4/tcp_rmem
echo "4096 $MAX_BUF $MAX_BUF" > /proc/sys/net/ipv4/tcp_wmem
echo $MAX_BUF > /proc/sys/net/core/rmem_max
echo $MAX_BUF > /proc/sys/net/core/rmem_default
echo $MAX_BUF > /proc/sys/net/core/wmem_max
echo $MAX_BUF > /proc/sys/net/core/wmem_default
Detailed information on Linux TCP/IP performance tuning is available in the Linux kernel source tree. Refer
to the file
LINUX-SOURCE_DIR/Documentation/networking/ip-sysctl.txt
Consult your operating system manuals for TCP/IP network parameter administration.
The TCP/IP standard allows maximum window sizes to be set to 64K, unless scalable windows are
supported.
Summary of Contents for SNC 4500
Page 1: ...www adic com ADVANCED DIGITAL INFORMATION CORPORATION SNC 450xUser sGuide...
Page 6: ...vi Contents...
Page 20: ...14 Getting Started Figure 4 Scalar 100 with Four LTO 1 or SDLT Drives...
Page 23: ...SNC 450x User s Guide 17 Figure 6 Scalar 100 with Four LTO 2 Drives...
Page 30: ...24 Getting Started...
Page 46: ...40 Using the SNC Manager Interface...
Page 112: ...106 Removal and Replacement Procedures...
Page 116: ...110 iSCSI Performance Tuning...
Page 119: ...SNC 450x User s Guide 113 BSMI Notice...
Page 120: ...114 Regulatory Notices...