Re: Any issue to be considered if ethernet send buffer is modified
Sebastian Andrzej Siewior <[email protected]>
| Newsgroups | gmane.linux.newbie,gmane.linux.rt.user |
|---|---|
| Message-ID | <[email protected]> |
* Ashoka K | 2013-08-30 13:51:14 [+0530]: >Hi, Hi, >I use embedded system with 2.6.33, Preempt patch. To reduce the >latency of sending data by our application, the ethernet send buffer >is modified with setsockopt(). > >Before modification the send buffer size by default was shown as 16384 bytes. >But on proc system value shown is different, both default and max are same: >/proc/sys/net/core/wmem_default = 108544 > >Eventhough the above value is not modified, why the default is shown >as 16384 instead 108544. Did kernel change these values during sending >traffic ? > >If send buffer is set by setsockopt(), is this value modified by >kernel during run time? Try to grep for sysctl_wmem_default. Atleast on v3.10 this value is initialized at compile time and only updated via sysctl and not by the kernel. >AK Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs