Kuti mudziwe ngati I/O ikuyambitsa kuchedwetsa kwadongosolo mutha kugwiritsa ntchito malamulo angapo koma chophweka ndi unix command top . Kuchokera pamzere wa CPU (ma) mutha kuwona kuchuluka kwa CPU mu I/O Dikirani; Kukwera kwa chiwerengero m'pamenenso zinthu zambiri za CPU zikudikirira mwayi wa I/O.
What is considered high Iowait?
The best answer I can give you is ” iowait is too high when it’s affecting performance.” Your “50% of the CPU’s time is spent in iowait ” situation may be fine if you have lots of I/O and very little other work to do as long as the data is getting written out to disk “fast enough”.
Chifukwa chiyani Iowait ili mkulu wa Linux?
I/O dikirani ndikugwira ntchito kwa seva ya Linux
Momwemonso, iowait yapamwamba imatanthauza kuti CPU yanu ikuyembekezera zopempha, koma muyenera kufufuza zambiri kuti mutsimikizire gwero ndi zotsatira zake. Mwachitsanzo, kusungirako seva (SSD, NVMe, NFS, etc.) pafupifupi nthawi zonse kumakhala pang'onopang'ono kusiyana ndi machitidwe a CPU.
Kodi ndingadziwe bwanji ngati CPU yanga ikulepheretsa Linux?
Titha kupeza botolo pakuchita kwa seva ya linux pogwiritsa ntchito njira zotsatirazi..
- Tengani zotuluka za TOP & mem, vmstat malamulo mu notepad imodzi.
- Tengani sar kutulutsa kwa miyezi 3.
- yang'anani kusinthasintha kwa njira & kagwiritsidwe ntchito panthawi yokhazikitsa kapena kusintha.
- Ngati katunduyo ndi wachilendo kuyambira kusintha.
Kodi ndingakonze bwanji high Iowait?
Zina zitatu zomwe zimapangitsa kuti iowait ikhale yokwera kwambiri ndi: disk yoyipa, kukumbukira zolakwika ndi mavuto a netiweki. Ngati simukuwonabe chilichonse chofunikira, ndi nthawi yoti muyese dongosolo lanu. Ngati n'kotheka, tsitsani onse ogwiritsa ntchito m'bokosilo, zimitsani seva yapaintaneti, database ndi ntchito ina iliyonse. Lowani kudzera pamzere wolamula ndikuyimitsa XDM.
Kodi Iowait mu Linux ndi chiyani?
Peresenti ya nthawi yomwe ma CPU kapena ma CPU anali opanda ntchito pomwe makinawo anali ndi pempho lapadera la disk I/O. Choncho, % iowait amatanthauza kuti kuchokera ku CPU, palibe ntchito zomwe zingatheke, koma I / O imodzi inali mkati. iowait ndi mtundu wa nthawi yopanda pake pomwe palibe chomwe chingakonzedwe.
Kodi ndingadziwe bwanji zomwe zimayambitsa Iowait?
Kuti mudziwe ngati I/O ikuyambitsa kuchedwetsa kwadongosolo mutha kugwiritsa ntchito malamulo angapo koma chophweka ndi unix command top . Kuchokera pamzere wa CPU (ma) mutha kuwona kuchuluka kwa CPU mu I/O Dikirani; Kukwera kwa chiwerengero m'pamenenso zinthu zambiri za CPU zikudikirira mwayi wa I/O.
Kodi pakati pa Linux ndi chiyani?
Avereji ya katundu ndi kuchuluka kwa dongosolo pa seva ya Linux kwa nthawi yodziwika. Mwanjira ina, ndikufunika kwa CPU kwa seva komwe kumaphatikizapo kuchuluka kwa kuthamanga ndi ulusi wodikirira.
Kodi kugwiritsa ntchito lamulo lapamwamba pa Linux ndi chiyani?
top command imagwiritsidwa ntchito kuwonetsa njira za Linux. Imapereka chiwonetsero chanthawi yeniyeni chamayendedwe othamanga. Kawirikawiri, lamulo ili limasonyeza chidule cha dongosolo ndi mndandanda wa ndondomeko kapena ulusi womwe ukuyendetsedwa ndi Linux Kernel.
Kodi ndimapeza bwanji IOPS ku Linux?
Momwe mungayang'anire magwiridwe antchito a disk I/O mu Windows OS ndi Linux? Choyamba, lembani lamulo lapamwamba mu terminal kuti muwone zomwe zili pa seva yanu. Ngati kutulutsa sikukukhutiritsa, ndiye yang'anani mu mawonekedwe a wa kuti mudziwe momwe kuwerenga ndi kulemba IOPS pa hard disk.
Kodi bottleneck mu Linux ndi chiyani?
Kutsekeka kumatha kuchitika pamanetiweki ogwiritsira ntchito kapena nsalu yosungiramo zinthu kapena mkati mwa maseva momwe muli mikangano yochulukirapo pazinthu zamkati za seva, monga mphamvu ya CPU processing, kukumbukira, kapena I/O (zolowetsa/zotulutsa). Chotsatira chake, kuyenda kwa data kumachedwetsa mpaka kuthamanga kwa malo ochepetsetsa kwambiri panjira ya deta.
Kodi ndingadziwe bwanji kuti vuto langa la CPU ndi chiyani?
Mwamwayi, pali mayeso amodzi osavuta kuti muwone ngati mudzakhala ndi vuto la CPU: Yang'anirani kuchuluka kwa CPU ndi GPU mukusewera masewera. Ngati katundu wa CPU ndi wokwera kwambiri (pafupifupi 70 peresenti kapena kupitilira apo) komanso okwera kwambiri kuposa kuchuluka kwa khadi la kanema, ndiye kuti CPU ikuyambitsa vuto.
Kodi nthawi yodikira ya CPU mu Linux ndi chiyani?
Kwa CPU yopatsidwa, nthawi yodikirira ya I/O ndi nthawi yomwe CPUyo inali yopanda ntchito (mwachitsanzo, sinagwire ntchito iliyonse) ndipo panali ntchito imodzi yodziwika bwino ya disk I/O yomwe idafunsidwa ndi ntchito yomwe idakonzedwa pa CPUyo. pa nthawi yomwe idapanga kuti I/O pempho).
Kodi nthawi yodikira ya CPU ndi chiyani?
Kudikirira kwa CPU ndi nthawi yotakata komanso yopanda tanthauzo kwa nthawi yomwe ntchito imayenera kudikirira kuti ipeze zida za CPU. Mawuwa amagwiritsidwa ntchito mofala m'malo owoneka bwino, pomwe makina angapo owonera amapikisana ndi zida zama processor.
Kodi WA pa Linux top ndi chiyani?
ife - Nthawi yogwiritsidwa ntchito pamalo ogwiritsira ntchito. sy - Nthawi yogwiritsidwa ntchito mu kernel space. ni - Nthawi yogwiritsira ntchito njira zabwino za ogwiritsa ntchito (Zofunikira za Wogwiritsa ntchito) - Nthawi yogwiritsidwa ntchito zopanda pake. wa - Nthawi yodikirira kudikirira pa IO zotumphukira (mwachitsanzo.
Kodi WA mu top command output ndi chiyani?
%wa - iyi ndi iowait peresenti. Pamene ndondomeko kapena pulogalamu ikupempha deta, imayang'ana kachipangizo ka purosesa (pali 2 kapena XNUMX cache), kenako imatuluka ndikuyang'ana kukumbukira, ndipo pamapeto pake idzagunda disk.