Re: lug-bg: Re: HTB:message in my log

[danchev@email.domain.hidden (George Danchev)]

On 18 03 2003 17:47, Nickola Kolev wrote:
<em class="quotelev1">>  Viktor wrote:
<em class="quotelev1">> 
<em class="quotelev1">> [ cut ]
<em class="quotelev1">>
<em class="quotelev2">>  > zdravo,
<em class="quotelev2">>  > na tozi adres, http://sp9wun.republika.pl/linux/shaperd_cbq_en.html,  e
<em class="quotelev2">>  > spomenato za bugfix:
<em class="quotelev2">>  > 
<em class="quotelev2">>  > 03.02.2003 - Version 2.00beta44.
<em class="quotelev2">>  > 	o Probably fixed bug kernel: HTB: quantum of class XXXXX is small.
<em class="quotelev2">>  > Consider r2q change
<em class="quotelev1">>
<em class="quotelev1">> [ cut ]
<em class="quotelev1">> 
<em class="quotelev1">> Íå, òîâà íÿìà ñúâñåì, àìà ñúâñåì íèùî îáùî. Ïúðâî, òîçè ñàéò å ïîñâåòåí íà
<em class="quotelev1">>  íåèçâåñòåí äîñåãà çà ìåí ïðîåêò, îñíîâàí ÂÚÐÕÓ htb (è ìàé cbq)
<em class="quotelev1">> ïîääðúæêàòà â ÿäðîòî. Âòîðî, êàòåãîðè÷íî òâúðäÿ, ÷å ñúîáùåíèÿòà â ëîãîâåòå
<em class="quotelev1">> îò òîçè âèä íå ñà ðåçóëòàò îò áúã â ÿäðîòî. Äà íå ãîâîðèì, ÷å ñòàâà âúïðîñ
<em class="quotelev1">> çà îïðàâåí áúã â shaperd, à íå â êîäà íà sch_htb. Ïðî÷åòè ïî-ïðåäíèÿ ìè
<em class="quotelev1">> ïîñò.

Íèêîëà, HTB âñå îùå íå å ÷àñò îò stock 2.4 kernel-a. Ñúäåéêè ïî òîâà êîåòî 
êàçâà è Àíòîí Òîäîðîâ çà âêëþ÷åíèÿ äåáúã è ìÿòàíåòî íà íÿêàêâè âúòðåøíè 
ñúñòîÿíèÿ íà ÿäòîðî â ëîã-à ñè ìèñëÿ ÷å áúäåùèÿ net/sched/sch_htb.c êîéòî 
òðåáå äà âëèçà â stock å îùå åêñïåðèìåíòàëåí è çà òîâà ñåäè îòâúí êàòî ïà÷. 
Íà ïðàêòèêà ÷îâåê ìîæå äà ïîçàêëþ÷è ñëåäíîòî: 
ãëåäàéêè íåáðåæíî sch_cbq.c èìà áàÿ locking äîðè ìàé è ïðè ïðèåìàíåòî íà 
íîâèòå ñòîéíîñòè ïðàùàíè êúì ÿäðîòî îò user space ñ óòèëêàòà tc (õâàëà íàáàòå 
Àëåêñåé, òóêà ;-)... Ìàé íà ÿäðîòî ïà÷íàòî ñ external htb patch ìó èäâà êðèâî 
àêî ìó íàáëúñêàø ïðåñåòâàéêè áåçñïèð èëè áåç ìåæäèííî èç÷àêâàíå ñ tc ðàçíèòå 
ìó ñòîéíîñòè. Ñëàãàéêè èçêóñòâåíî åäèí áåçêðàéíî ìàëúê sleep èíòåðâàë ÿâíî 
ïðåäîòâðàòÿâà òîâà îìàçâàíå íà kernel-data-òà, êîåòî èíà÷å ñàìîòî ïà÷íàòî 
ÿäðî áè òðÿáâàëî äà ñè èçâúðøâà lock-âàéêè äàäåíèòå dataïîëåòà â ñâîÿ 
kernel-data space (locking protects data not code ;-). Ìèñëÿ, ÷å èìà áàÿ 
ðåçîí â òåçè ñëîâà. Ìåæäó äðóãîòî ïîèçðàé ñè äà ïðåñåòâàø áåç èç÷àêâàù 
èíòåðâàë íÿêîëêî íîâè htb ñòîéíîñòè ñ tc ... ùå å èíòåðåñíî äà âèäè ðåçóëòàòà 
è ïðè òåá... Îñâåí òîâà èìà èåäíà çàâèñèìîñò è òÿ å àðõèòåêòóðíîçàâèñèìà, see 
NOTES íà man tc-htb:

Due to Unix timing constraints, the maximum ceil rate is not infinite and may 
in fact be  quite  low. On Intel, there are 100 timer events per second, the 
maximum rate is that rate at which 'burst' bytes are sent each timer tick.  
<em class="quotelev1">>From this, the mininum burst size for a specified rate can be  calculated. 
For i386, a 10mbit rate requires a 12 kilobyte burst as 100*12kb*8 equals 
10mbit.

Ïîèãðàé ñè è ñ òåçè ñòîéíîñòè, çàäàâàéêè íåêîðåêòíè çíà÷åíèÿ (ãëåäàì ÷å svetla 
ïîäàâà åäíàêâè ñòîéíîñòè çà òÿõ, íàïð. rate 100Mbit ceil 100Mbit) äà âèäèø 
äàëè htb patch kernel-a å error tolerant .... Èäåÿ íÿìàìïðîñòîå èíòåðåñíî äà 
òåñòèø êàê å ïîëîæåíèåòî ;-) 


-- 
printk("Greets, fr33zb1\n");
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