There are two mount options for timeouts of an NFS request. # timeo: a timeout value. the unit is 1/10 seconds. # retrans: a retrans count.An NFS client waits an RPC response for timeo before issuing an RPC request. If the request is timed out, the NFS client retransmits the request and waits a response again for tomeo*2. The timeout valueis doubled until it reachs a maximum value. The maximum timeout is timeo*(retrans+1) in TCP, is NFS_MAX_UDP_TIMEOUT in UDP. The RPC timeout is called minor timeout. If the timeout reaches maximum...
Friday, 29 July 2011
Tuesday, 26 July 2011
How to check or read email with telnet
Posted on 14:51 by Unknown
Do following :#telnet example.com 110#user username@example.com#pass yourpasswordgoeshere#list#retr id#dele idquitD...
How to check or read email with telnet
Posted on 14:49 by Unknown
Do following :#telnet example.com 25#ehlo example.com#mail from: username@example.com#rcpt to: friend@hotmail.com, friend2@yahoo.com#dataSubject: My Telnet Test EmailHello,This is an email sent by using the telnet command.Your friend,Me.d...
Tuesday, 19 July 2011
How linux calls happens while it starts ?
Posted on 13:06 by Unknown
We start the Linux kernel first from C code executed from ''startup_32:'' asm label:|startup_32: |start_kernel |lock_kernel |trap_init |init_IRQ |sched_init |softirq_init |time_init |console_init |#ifdef CONFIG_MODULES |init_modules |#endif |kmem_cache_init |sti |calibrate_delay |mem_init |kmem_cache_sizes_init |pgtable_cache_init |fork_init |proc_caches_init |vfs_caches_init |buffer_init |page_cache_init |signals_init ...
How to use ethtool ?
Posted on 13:02 by Unknown
#ethtool -g|--show-ring eth0#ethtool -A ethX [autoneg on|off] [rx on|off] [tx on|off]#ethtool -c|--show-coalesce ethX#ethtool -C|--coalesce ethX //change coalesce valuesTo avoid flooding the host system with too many interrupts, packets are collected and one single interrupt is generated for multiple packets. This is called interrupt coalescing.#ethtool -G|--set-ring ethX [rx N] [rx-mini N] [rx-jumbo N] [tx N]#ethtool -i|--driver ethX#ethtool -k|--show-offload ethX#ethtool -K|--offload ethX [rx on|off] [tx on|off] [sg on|off] [tso...
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