/dev/shm tsis muaj dab tsi tab sis kev siv ntawm ib txwm sib koom nco lub tswv yim. Nws yog ib qho txiaj ntsig zoo ntawm kev hla cov ntaub ntawv ntawm cov kev pab cuam. Ib qho kev pab cuam yuav tsim ib feem nco, uas lwm cov txheej txheem (yog tias tso cai) tuaj yeem nkag mus. Qhov no yuav ua rau kom ceev cov khoom ntawm Linux.
SHM loj yog dab tsi?
Shm-loj parameter tso cai rau koj los qhia meej lub cim xeeb sib koom uas lub thawv tuaj yeem siv tau. Nws tso cai rau cov ntim ntim ntau lub cim xeeb kom khiav nrawm dua los ntawm kev muab kev nkag mus rau ntau lub cim xeeb. tmpfs parameter tso cai rau koj los txhim kho lub ntim ib ntus hauv kev nco.
Puas yog dev SHM siv qhov chaw disk?
Raws li kuv paub, /dev/shm kuj yog qhov chaw ntawm HDD yog li cov nyeem / sau nrawm yog tib yam. Kuv qhov teeb meem yog, kuv muaj 96GB cov ntaub ntawv thiab tsuas yog 64GB RAM (+ 64GB swap). Tom qab ntawd, ntau cov xov los ntawm cov txheej txheem tib yam yuav tsum tau nyeem cov chunks me me ntawm cov ntaub ntawv (li 1.5MB).
Yuav ua li cas nce SHM Linux?
Resize /dev/shm Filesystem Hauv Linux
- Kauj ruam 1: Qhib /etc/fstab nrog vi lossis ib qho ntawv nyeem uas koj xaiv. Kauj ruam 2: Nrhiav cov kab ntawm / dev / shm thiab siv qhov kev xaiv loj tmpfs los qhia koj qhov loj me.
- Kauj Ruam 3: Txhawm rau hloov pauv tau zoo tam sim ntawd, khiav cov lus txib mount no kom rov ua dua / dev / shm filesystem:
- Kauj Ruam 4: Tshawb xyuas.
Kuv yuav teeb SHM loj li cas?
Koj tuaj yeem hloov kho shm loj los ntawm dhau qhov kev xaiv tsis tau -shm-loj rau docker khiav hais kom ua. Lub neej ntawd yog 64MB. Yog tias koj siv docker-compose, koj tuaj yeem teeb tsa koj qhov kev pabcuam. shm_size tus nqi yog tias koj xav kom koj lub thawv siv qhov /dev/shm loj thaum khiav lossis koj_service.
SHM file system yog dab tsi?
shm / shmfs tseem hu ua tmpfs, uas yog ib lub npe rau ib ib ntus cov ntaub ntawv cia chaw ntawm ntau Unix-zoo li operating systems. Nws yog npaj kom tshwm sim raws li ib tug mounted ntaub ntawv system, tab sis ib tug uas siv virtual nco es tsis txhob ntawm ib tug pheej cia ntaus ntawv.
Puas yog dev SHM ruaj ntseg?
Ib qho teeb meem kev nyab xeeb loj nrog /dev/shm yog leej twg tuaj yeem upload thiab ua cov ntaub ntawv hauv /dev/shm zoo ib yam li /tmp muab faib. Ua raws li cov kauj ruam hauv qab no kom ruaj ntseg cov ntaub ntawv tmpfs. Kho kom raug /etc/fstab thiab hloov cov kab hauv qab no.
Koj ua li cas dev SHM?
Txhawm rau hloov lub configuration rau /dev/shm, ntxiv ib kab rau /etc/fstab as ua raws li. Ntawm no, qhov / dev / shm loj yog teeb tsa ua 8GB (kom paub tseeb tias koj muaj lub cim xeeb txaus nruab).
Dab tsi yog qhov txawv ntawm Ramfs thiab tmpfs?
Ramfs yuav loj hlob dynamically. Tab sis thaum nws mus saum tag nrho RAM loj, lub kaw lus yuav dai, vim RAM puv, thiab tsis tuaj yeem khaws cov ntaub ntawv ntxiv. Tmpfs yuav tsis loj hlob dynamically. Nws yuav tsis tso cai rau koj sau ntau tshaj qhov loj koj tau teev thaum mounting tmpfs.
Peb puas tuaj yeem nce dev SHM?
Ntxiv rau qhov kawg ntawm cov ntaub ntawv kab tsis muaj /dev/xwm tmpfs ua ntej,loj=4G 0 0, thiab hloov cov ntawv tom qab loj= . Piv txwv li yog tias koj xav tau 8G loj, pauv tau loj= 4g loj= 8g. Tawm koj cov ntawv nyeem, ces khiav (nrog sudo yog tias xav tau) $ mount /dev/hwm shm .
Dev SHM nyob qhov twg?
Los ntawm Wikipedia: Tsis ntev los no 2.6 Linux kernel tsim tau pib muab /dev/shm raws li kev sib koom nco hauv daim ntawv ntawm ramdisk, tshwj xeeb tshaj yog cov npe sau tau hauv ntiaj teb uas tau khaws cia hauv lub cim xeeb nrog cov kev txwv hauv /etc/default/tmpfs. /dev/shm kev them nyiaj yug yog xaiv kiag li nyob rau hauv cov ntaub ntawv kernel config.
Kuv yuav paub qhov luaj li cas ntawm kuv Tmpfs?
Los ntawm http://www.kernel.org/doc/Documentation/filesystems/tmpfs.txt: Ntxiv rau koj tuaj yeem tshawb xyuas qhov qhov tseeb RAM + sib pauv siv ntawm tmpfs piv txwv nrog df(1) thiab du(1). yog li 1136 KB tau siv. yog li 1416 KB tau siv.