Îøèáêà "page allocation failure" íà ïðîøèâêàõ RT-N16-1.9.2.7-rtn

**rss** · 10-10-2010, 20:05

Originally Posted by ryzhov_al

Ñïàñèáî çà ñîâåò. Íàñòðîéêè ïî óìîë÷àíèþ:

Code:

$ cat /proc/sys/vm/swappiness
60
$ cat /proc/sys/vm/min_free_kbytes
1442

Óâåëè÷èë min_free_kbytes äî 16384, ïðîâåðþ â ðàáîòå.

Îäíàêî äâà âîïðîñà âñ¸ ðàâíî îñòàëèñü.

Íàñêîëüêî ÿ äëÿ ñåáÿ âûÿñíèë, rtorrent èñïîëüçóåò memory mapping. Ïîëó÷àåòñÿ, ôàéëû íàïðÿìóþ îòîáðàæàþòñÿ â ïàìÿòü, à çà ââîä-âûâîä íà äèñê îòâå÷àþò èñêëþ÷èòåëüíî ôóíêöèè\àëãîðèòìû ÿäðà. Êàê áû íå ñòàðàëñÿ Linux VM, åñëè ñêîðîñòü ñêà÷èâàíèÿ çàìåòíî ïðåâûøàåò ñêîðîñòü çàïèñè íà äèñê, òî kswapd\pdflush ïðîñòî íå óñïåþò íè÷åãî âûãðóçèòü íà äèñê. Linux VM ìû ïàðàìåòðîì min_free_kbytes ïîäêðóòèëè, íî â ñëó÷àå, îïèñàííîì ïîñòîì âûøå çàñàäà âñ¸ ðàâíî âîçíèêíåò?

Ïî÷åìó îøèáêà page allocation failure ó ìåíÿ íèêîãäà íå âîçíèêàëà íà ÿäðàõ 2.4?

Ïðîñüáà ïîãîíÿòü ìàðøðóòèçàòîð íà òåñòàõ. Â àðõèâå îáû÷íûé STREAM íà 45 ÌÁ, à òàêæå ïðîñòûå ìíîãîïîòîêîâûå òåñòû äëÿ ñîçäàíèÿ íàãðóçêè ñî ñëó÷àéíûì äîñòóïîì. Ñîîòâåòñòâåííî íà 10, 100 è 128 ÌÁ. Ïîñëåäíèé ãàðàíòèðîâàííî âûçûâàåò ñâîïèíã íà RT-N16. Âñ¸ ñ èñõîäíèêàìè. Åñëè åñòü æåëàíèå, ìîæíî ïîïðîáîâàòü èçìåíèòü êîëè÷åñòâî ïîòîêîâ è îáúåì âûäåëÿåìîé ïàìÿòè.

PS: îñíîâíàÿ çàäà÷à - äîáèòüñÿ óñòîé÷èâîé îøèáêè áåç èñïîëüçîâàíèÿ òîððåíòîâ.

**sht0rm** · 31-10-2010, 09:32

À ÷òî äåëàòü åñòü âàëèòñÿ ñ îøèáêîé
"kernel: swapper: page allocation failure. order:3, mode:0x4020"
ÍÎ, ñàì ðîóòåð òîððåíòû íå ðàçäàåò.
Ïî ssh çàéòè íà íåãî ñìîã, ïî top ïàìÿòè ñâîáîäíî áûëî 108ìá.

Òîððåíòû ðàçäàþòñÿ çà ðîóòåðîì.
NAS Synology ds210j (Transmission 2.11) - 17 òîððåíòîâ (ìàêñèìóì 300 êîííåêòîâ ðàçðåøåíî, íå áîëåå 20 íà òîððåíò)

Íîóò Dell XPS m1330a (Transmission 2.12) - 156 òîððåíòîâ (àíàëîãè÷íî ìàêñèìóì 300 ïèðîâ ðàçðåøåíî è íå áîëåå 20 íà òîððåíò).

×òî áûëî ñäåëàíî:
îòêëþ÷èë UPnP íà ðîóòåðå.
Ïðîáðîñèë íà êàæäûé òîððåíò-êëèåíò 1 ïîðò. è åãî æå ïðîïèñàë â íàñòðîéêàõ êëèåíòà.

÷åðåç ïîëòîðà ÷àñà ñíîâà óïàë.
Ïðîøèâêè ïðîáîâàë ïî÷òè âñå. Ñáðàñûâàë â äåôîëò è íàñòðàèâàë çàíîâî.
â äàííûé ìîìåíò òåñòèðóþ 2308.

Ïðèëîæó syslog.

**ryzhov_al** · 31-10-2010, 19:00

Originally Posted by rss

Ïðîñüáà ïîãîíÿòü ìàðøðóòèçàòîð íà òåñòàõ. Â àðõèâå îáû÷íûé STREAM íà 45 ÌÁ, à òàêæå ïðîñòûå ìíîãîïîòîêîâûå òåñòû äëÿ ñîçäàíèÿ íàãðóçêè ñî ñëó÷àéíûì äîñòóïîì. Ñîîòâåòñòâåííî íà 10, 100 è 128 ÌÁ. Ïîñëåäíèé ãàðàíòèðîâàííî âûçûâàåò ñâîïèíã íà RT-N16. Âñ¸ ñ èñõîäíèêàìè. Åñëè åñòü æåëàíèå, ìîæíî ïîïðîáîâàòü èçìåíèòü êîëè÷åñòâî ïîòîêîâ è îáúåì âûäåëÿåìîé ïàìÿòè.

PS: îñíîâíàÿ çàäà÷à - äîáèòüñÿ óñòîé÷èâîé îøèáêè áåç èñïîëüçîâàíèÿ òîððåíòîâ.

Ïîãîíÿë, â òîì ÷èñëå ñ òîððåíòàìè, íèêàêèõ îøèáîê ïðè óñòàíîâëåííîì ïàðàìåòðå vm.min_free_kbytes=10240 íåò. Èñïîëüçîâàë ñêðèïò:

Code:

$ cat /tmp/harddisk/tmp/mem_load.sh
#!/bin/sh
echo Time [HH:MM:SS], Free RAM [MB], Free Swap [MB] > /tmp/mem_heartbeat.csv
for seconds in `seq 1 180`;
 do
  echo `date +%H:%M:%S`, `cat /proc/meminfo | grep ^MemFree | gawk '{print $2}'`, `cat /proc/meminfo | grep ^SwapFree | gawk '{print $2}'` >> /tmp/mem_heartbeat.csv
  case "$seconds" in
   20) /tmp/harddisk/tmp/memtest10 & ;;
   40) killall memtest10 & ;;
   60) /tmp/harddisk/tmp/memtest100 & ;;
   80) killall memtest100 & ;;
   100) /tmp/harddisk/tmp/memtest & ;;
   120) killall memtest & ;;
  esac
  sleep 1s

$ nice -20 /tmp/harddisk/tmp/mem_load.sh

Ïîÿñíåíèÿ ê ãðàôèêó:

â 21:40:41 çàïóñê memtest10,
â 21:41:11 îñòàíîâêà memtest10,
â 21:41:33 çàïóñê memtest100,
â 21:42:40 îñòàíîâêà memtest100,
â 21:42:40 çàïóñê memtest,
â 21:43:28 îñòàíîâêà memtest.

**rss** · 31-10-2010, 19:20

Originally Posted by ryzhov_al

Ïîãîíÿë, â òîì ÷èñëå ñ òîððåíòàìè, íèêàêèõ îøèáîê ïðè óñòàíîâëåííîì ïàðàìåòðå vm.min_free_kbytes=10240 íåò.

Ñïàñèáî çà èíôîðìàöèþ. Òîëüêî äëÿ memtest ñî 128-þ ÌÁ ìîæåò áûòü ìàëîâàòî 50 ñåêóíä. À ñî çíà÷åíèåì vm.min_free_kbytes ïî-óìîë÷àíèþ âñ¸ ðàáîòàåò?

Åñëè ñáîåâ íå áóäåò, çíà÷èò íàäî äðóãîé òåñò ïîäáèðàòü.

**sht0rm** · 31-10-2010, 19:57

Òåñòèðîâàë ïîñëåäíþþ àñóñîâñêóþ ïðîøèâêó 1.0.1.9
Òîæå ñàìîå.
Ïðîøèëñÿ íà òîìàòî, è â åãî íàñòðîéêàõ ñìîòðþ ñêîëüêî ñîåäèíåíèé îí îòñëåæèâàåò, îêàçàëîñü òðàíñìèøí íà synology õðåíîâî îãðàíè÷èâàåò ñåáÿ â ïèðàõ, íà 18 òîððåíòàõ 1308 ñîåäèíåíèé.

**ryzhov_al** · 01-11-2010, 18:24

Originally Posted by rss

À ñî çíà÷åíèåì vm.min_free_kbytes ïî-óìîë÷àíèþ âñ¸ ðàáîòàåò?

Òîæå ðàáîòàåò.

Originally Posted by rss

Åñëè ñáîåâ íå áóäåò, çíà÷èò íàäî äðóãîé òåñò ïîäáèðàòü.

Îøèáêó ìîæíî âîñïðîèçâåñòè ëèøü ñ ìåäëåííûì USB-íîñèòåëåì - äåøåâîé ôëåøêîé:

Code:

$ dd if=/dev/discs/disca/part1  of=/dev/null count=512K
524288+0 records in
524288+0 records out
268435456 bytes (268 MB) copied, 34,892 s, 7,7 MB/s

$ dd if=/dev/zero  of=/tmp/harddisk/backup/nonsense.swp  count=512K
524288+0 records in
524288+0 records out
268435456 bytes (268 MB) copied, 116,384 s, 2,3 MB/s

Ñ îòíîñèòåëüíî áûñòðûì USB-HDD îøèáêó ïîâòîðèòü íå óäà¸òñÿ.
Ñêîðîñòü I/O âèí÷åñòåðà:

Code:

$ dd if=/dev/discs/disca/part1  of=/dev/null count=512K
524288+0 records in
524288+0 records out
268435456 bytes (268 MB) copied, 12,0739 s, 22,2 MB/s

$ dd if=/dev/zero  of=/tmp/harddisk/nonsense.swp  count=512K
524288+0 records in
524288+0 records out
268435456 bytes (268 MB) copied, 32,5379 s, 8,2 MB/s

Íàïðàøèâàåòñÿ ñëåäóþùèé âûâîä: ïðè èñïîëüçîâàíèè òîðìîçíîãî íîñèòåëÿ è äåôîëòíîãî (ìàëîãî!) çíà÷åíèÿ vm.min_free_kbytes ìîæåò âîçíèêíóòü ñèòóàöèÿ, êîãäà ÿäðî íå óñïåâàåò âûäåëÿòü òðåáóåìóþ ïðîöåññàì ïàìÿòü.

Upd 23.11.10. Ïîëüçîâàòåëè rtorrent, åñëè ó Âàñ íàçâàíàÿ îøèáêà âîçíèêàåò â ìîìåíò îáðàùåíèÿ ê âåá-èíòåðôåéñó rtorrent'à, òî íåîáõîäèìî âûïîëíèòü äåéñòâèÿ, îïèñàííûå çäåñü.

**Zhmak** · 09-02-2011, 12:40

Åñëè ðîóòåð ñ rTorrent äîëãîå âðåìÿ âèñèò íà ðàçäà÷å, òî âñÿêàÿ àêòèâíîñü ïðåêðàùàåòñÿ. Â âåá èíòåðôåéñå âñ¸ â ïîðÿäêå - ðàçäà÷è çåëåíûå.
Åñëè ïîäõâàòèòü screen, òî ó êàæäîé ðàçäà÷è íàïèñàíî Tracker: [Error]
Ïåðåçàïóñê êëèåíòà ïðîáëåìó ðåøàåò äî ñëåäóþùåãî ðàçà. Òðåêåðû ðàçíûå (ëîñòôèëüì, ðóòðåêåð, è äð.)

Êàê óáðàòü ïðîáëåìó?

**maxbanton** · 18-03-2011, 22:46

WL500gpv2, 1.9.2.7-rtn-r2808 + USB HDD WD 500Gb
Ñûïåò îøèáêè â syslog. Âûäåðæêó ïðèëàãàþ. Òàêàÿ æå ñèòóàöèÿ è â ðåâèçèè 2817.
Ïðîøèâêè áðàë òóò: ftp://core.dumped.ru/rt-n/*/wl/WL500...-rtn-r*.trx.gz

**theMIROn** · 18-03-2011, 23:53

Originally Posted by maxbanton

WL500gpv2, 1.9.2.7-rtn-r2808 + USB HDD WD 500Gb
Ñûïåò îøèáêè â syslog. Âûäåðæêó ïðèëàãàþ. Òàêàÿ æå ñèòóàöèÿ è â ðåâèçèè 2817.
Ïðîøèâêè áðàë òóò: ftp://core.dumped.ru/rt-n/*/wl/WL500...-rtn-r*.trx.gz

íàñòðîéòå àïïåòèòû rtorret-à â ïëàíå ïàìÿòè.
ðàçìåð âñåõ ôàéëîâ ëîãîâ êñòàòè êàêîé â ýòîò ìîìåíò?

**maxbanton** · 19-03-2011, 00:28

Originally Posted by theMIROn

íàñòðîéòå àïïåòèòû rtorret-à â ïëàíå ïàìÿòè.
ðàçìåð âñåõ ôàéëîâ ëîãîâ êñòàòè êàêîé â ýòîò ìîìåíò?

Code:

8       /opt/var/log/kern.log
4       /opt/var/log/rtorrentInit.log
56      /opt/var/log/syslog.log

ëîãè íà HDD, íàñòðîåí logrotate.

P.S.: Ïðîøèâàë r2808, îòêëþ÷èëè ñâåò. Ñâåò âêëþ÷àþò, ÿ ê ðîóòåðó - îí â rescue mode. Óòèëèòîé àñóñà âîññòàíîâèë r2817 - ïîë ÷àñà, ïîëåò íîìàëüíûé, îøèáêè â ëîã íå ñûïåò

P.S.S.: Êàêîãî ðàçìåðà îãðàíè÷åíèå ïàìÿòè äëÿ rtorrent ïîðåêîìåíäóåòå?

**mvo** · 11-07-2011, 08:18

RT-N16-1.9.2.7-rtn-r3121.trx, HDD 320GB, SWAP 256M, âî âðåìÿ ðàáîòû transmission â ëîãàõ ïîÿâëÿåòñÿ:

Code:

(warning|kern|kernel) swapper: page allocation failure. order:3, mode:0x4020

â /tmp/local/sbin/post-boot äîïèñàë: "echo 16384 > /proc/sys/vm/min_free_kbytes" -> flashfs save && flashfs commit && flashfs enable && reboot

Áåçðåçóëüòàòíî... Êàê ñ ýòèì áîðîòüñÿ?

**ryzhov_al** · 11-07-2011, 09:56

Originally Posted by mvo

â /tmp/local/sbin/post-boot äîïèñàë: "echo 16384 > /proc/sys/vm/min_free_kbytes" -> flashfs save && flashfs commit && flashfs enable && reboot

Áåçðåçóëüòàòíî...

Ñòðàííî, ïîòîìó ÷òî..

09:58:28 11-07-2011 (warning|kern|kernel) Mem-info:
...
09:58:28 11-07-2011 (warning|kern|kernel) Normal free:10908kB min:1440kB low:1800kB high:2160kB

Ïîïðîáóéòå íà çàãðóæåííîé ñèñòåìå âûïîëíèòü ñâîé tmp/local/sbin/post-boot. Íå áóäåò ëè ñîîáùåíèé îá îøèáêàõ?

È åù¸, â ëþáîì ñëó÷àå íåîáõîäèìî â transmission îãðàíè÷èòü ñêîðîñòü ñêà÷èâàíèÿ äî çíà÷åíèé ìåíüøèõ, ÷åì ñêîðîñòü çàïèñè íà USB-íîñèòåëü. Èíà÷å ïðè ëþáûõ íàñòðîéêàõ LinuxVM ìîæíî ñëîâèòü ëîêàëüíîãî ïèðà è ïîëó÷èòü îïèñàííóþ âàìè ñèòóàöèþ. Îáðàòèòå âíèìàíèå: SWAP â ìîìåíò âîçíèêíîâåíèÿ îøèáêè ïðàêòè÷åñêè íå ó÷àñòâóåò. Ìîæåò êàê ðàç ïîòîìó, ÷òî ó÷àñòâîâàòü íå óñïåâàåò

...
09:58:28 11-07-2011 (warning|kern|kernel) Free swap = 256740kB
09:58:28 11-07-2011 (warning|kern|kernel) Total swap = 257000kB

**mvo** · 12-07-2011, 12:53

Originally Posted by ryzhov_al

Ñòðàííî, ïîòîìó ÷òî..

Ïîïðîáóéòå íà çàãðóæåííîé ñèñòåìå âûïîëíèòü ñâîé tmp/local/sbin/post-boot. Íå áóäåò ëè ñîîáùåíèé îá îøèáêàõ?

Code:

[root@my sbin]$ post-boot
cannot access `/tmp\r': No such file or directory
: nonexistent directoryot: line 4: can't create /proc/sys/vm/min_free_kbytes

postboot:

Code:

#!/bin/sh
chmod 777 /tmp

echo 16384 > /proc/sys/vm/min_free_kbytes

**ryzhov_al** · 12-07-2011, 13:11

Âûâîä: êîíöû ñòðîê â ôàéëå /tmp/local/sbin/post-boot íå ñîîòâåòñòâóþò ñòàíäàðòàì unix. Ïðàâüòå.

**mvo** · 12-07-2011, 13:36

Originally Posted by ryzhov_al

Âûâîä: êîíöû ñòðîê â ôàéëå /tmp/local/sbin/post-boot íå ñîîòâåòñòâóþò ñòàíäàðòàì unix. Ïðàâüòå.

Ñïàñèáî, ñåé÷àñ íîðìàëüíî çàïóñêàåòñÿ. Íàäåþñü, äåëî áûëî â ýòîì

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