Shouldn't your count be a minimum of 98304? bs is in bytes. On Wed, 10 Jan 2007 18:09:53 -0600 "Supriya Sriraman" <sriraman.supriya@xxxxxxxxx> writes: > I want to determine and increase ram size on RHEL 4. > > Can anyone help me with this? > > I need 96MB, so I used a bs of 1024 and count of 93750 for the dd > command. > It failed. > > FAILS (RHEL 4) > ============== > dd if=/dev/zero of=/dev/ram1 bs=1024 count=93750 > dd: writing `/dev/ram1': No space left on device > 16385+0 records in > 16384+0 records out > > dd if=/dev/zero of=/dev/ram1 bs=1024 count=16385 > dd: writing `/dev/ram1': No space left on device > 16385+0 records in > 16384+0 records out > > Count of 16384 works, but nothing higher does. > > WORKS (RHEL 4) > ============== > dd if=/dev/zero of=/dev/ram1 bs=1024 count=16384 > 16384+0 records in > 16384+0 records out > > dd if=/dev/zero of=/dev/ram2 bs=1024 count=16384 > 16384+0 records in > 16384+0 records out > > $ cat /proc/meminfo > MemTotal: 16574352 kB > MemFree: 14907316 kB > Buffers: 253092 kB > Cached: 729308 kB > SwapCached: 140 kB > Active: 865416 kB > Inactive: 272900 kB > HighTotal: 15794176 kB > HighFree: 14891264 kB > LowTotal: 780176 kB > LowFree: 16052 kB > SwapTotal: 20414456 kB > SwapFree: 20414316 kB > Dirty: 8 kB > Writeback: 0 kB > Mapped: 195864 kB > Slab: 496572 kB > CommitLimit: 28701632 kB > Committed_AS: 447724 kB > PageTables: 5084 kB > VmallocTotal: 106488 kB > VmallocUsed: 12016 kB > VmallocChunk: 94152 kB > HugePages_Total: 0 > HugePages_Free: 0 > Hugepagesize: 2048 kB > $ free > total used free shared buffers > cached > Mem: 16574352 1667100 14907252 0 253092 > 729308 > -/+ buffers/cache: 684700 15889652 > Swap: 20414456 140 20414316 > > I have a machine with a Debian distribution on which the dd command > with > 24 count=93750: > > DEBIAN: > dd if=/dev/zero of=/dev/ram1 bs=1024 count=93750 > 93750+0 records in > 93750+0 records out > > > $ cat > /proc/meminfo > > total: used: free: shared: buffers: cached: > Mem: 1585790976 1579163648 6627328 0 33210368 1361088512 > Swap: 1073733632 14704640 1059028992 > MemTotal: 1548624 kB > MemFree: 6472 kB > MemShared: 0 kB > Buffers: 32432 kB > Cached: 1327956 kB > SwapCached: 1232 kB > Active: 938112 kB > Inactive: 428852 kB > HighTotal: 1048576 kB > HighFree: 2860 kB > LowTotal: 500048 kB > LowFree: 3612 kB > SwapTotal: 1048568 kB > SwapFree: 1034208 kB > $ > free > > total used free shared buffers > cached > Mem: 1548624 1542228 6396 0 32432 > 1328008 > -/+ buffers/cache: 181788 1366836 > Swap: 1048568 14360 1034208 > > > Thanks! > -- > redhat-list mailing list > unsubscribe > mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
