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Re: ti0: cluster allocation failed -- packet dropped!



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From: ¹®È­ÁØ <hjmoon@cintel.co.kr>
Subject: ti0: cluster allocation failed -- packet dropped! 
Date: Thu, 12 Dec 2002 21:57:14 +0900

> 3Com GIGA NIC °¡ ÅöÇϸé Á×¾î¹ö¸³´Ï´Ù.
> ¾Æ·¡´Â freeBSD 4.4¿¡¼­ ³ª¿À´Â ¸Þ¼¼ÁöÀÔ´Ï´Ù. 
> ti0: cluster allocation failed -- packet dropped! 
> ¿ä·±¸Þ¼¼Áö°¡ ³ª¿À¸é¼­ µ¿ÀÛÀÌ ¾ÈµË´Ï´Ù.
> 
> ¿Ö ±×·±Áö ¾Ë·ÁÁÖ¼¼¿ä.. ºÎʵ右´Ï´Ù.
> Âü°í·Î ÀÌ·±Çö»óÀÌ ÀÖÀ»¶§ ³»¸° ¸í·ÉÀÔ´Ï´Ù.
> BSD# netstat -m
> 1677/51456/98304 mbufs in use (current/peak/max):
>         1589 mbufs allocated to data
>         88 mbufs allocated to packet headers
> 1303/49152/49152 mbuf clusters in use (current/peak/max)
  -------------------

¿©±â º¸½Ã¸é mbuf clusterÀÇ peakÄ¡°¡ maxÄ¡¿Í °°À½À» ¾Ë ¼ö ÀÖ½À´Ï´Ù.
ÀÌ´Â mbuf clusterÀÇ ½ÇÁ¦ »ç¿ë(peak)°¡ ½Ã½ºÅÛ Çã¿ëÄ¡(max)¸¦ ³Ñ¾ú´Ù´Â
ÀǹÌÀ̹ǷΠmbuf cluster¸¦ ´Ã·Á ÁÖ½Ã¸é µÇ°Ú³×¿ä.

Çѵ¥ 4.x¿¡¼­´Â sysctlµîÀ» »ç¿ëÇØ¼­ µ¿ÀûÀ¸·Î mbuf cluster¸¦ ´Ã¸± ¼ö°¡
¾ø½À´Ï´Ù.. ÇѹøÀº ¸®ºÎÆÃÇØ¾ß ÇÕ´Ï´Ù. /boot/loader.conf.local¿¡

# large ipc buffer
kern.ipc.nmbclusters="131072"

¸¦ Ãß°¡ÇϽðí(ÆÄÀÏÀÌ ¾øÀ¸¸é ¸¸µå½Ã¸é µË´Ï´Ù) ´Ù½Ã ¸®ºÎÆÃÇϼ¼¿ä.
À§ °ªÀÌ ¸ðÀÚ¶ó¸é ´õ ´ÃÀÌ¸é µË´Ï´Ù¸¸ ±×·¯¸é ´Ù¸¥ ½Ã½ºÅÛ °ªµµ ´Ã·Á¾ß
ÇÒÁöµµ ¸ð¸£°Ú½À´Ï´Ù. Á÷Á¢ ÇØ º¸½Ã°í ÆÇ´ÜÇϼ¼¿ä.

> 111168 Kbytes allocated to network (22% of mb_map in use)
> 5089 requests for memory denied
> 7 requests for memory delayed
> 0 calls to protocol drain routines
> --
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