#ESXTOP commands

[it-system-engineer]

ESXTOP Commands

Merhaba, bu yazımda sizlere popüler esxtop commands konusundan bahsedeceğim. esxtop VMware ESXi sunucularını izlemek için kullanılan güçlü bir komut satırı aracıdır. Gerçek zamanlı olarak sistem performansını gösterir ve CPU, bellek, disk I/O ve ağ I/O gibi çeşitli kaynakların kullanımı hakkında bilgi sağlar. esxtop kullanarak sistem hakkında derinlemesine bilgi alabilir ve potansiyel sorunları…

[virtualizationhowto]

ESXTOP commands: The Ultimate Guide

ESXTOP commands: The Ultimate Guide @vexpert #vmwarecommunities #100daysofhomelab #homelab #ESXTOPGuide #VMwarePerformanceMonitoring #ESXiHostOptimization #VirtualMachineTroubleshooting #CPUUtilization #MemoryManagement #ESXTOPCommands

When performance issues arise in your virtual machines running in VMware vSphere, understanding how to troubleshoot and optimize is crucial. One versatile tool at your disposal is ESXTOP, a command line interface that provides real-time data on the ESXi host and its virtual machines. Let��s take a look at ESXTOP commands you need to know. Table of contentsWhat is ESXTOP?ESXTOP commands for…

[eddydesh]

Guide to ESXTOP

ESXTOP is a powerful command-line tool in VMware ESXi that provides real-time monitoring and performance analysis of your virtual infrastructure. It offers insights into various aspects of your ESXi host and its virtual machines. The tool is available either on the ESXi host local Shell, esxtop or from remote systems, resxtop. ESXTOP Keys: ESXTOP is navigated using various keys. Here are the…

[navicosoftx]

Dazing tips on verification of Dedicated Web Hosting

In dedicated hosting, a server is dedicated to an individual looking to have an online presence in the form of a website. And the provided server is not shared or partitioned with other users in this hosting. But if it is undoubtedly not shared, you need verification of Dedicated Web Hosting Company.

 The website owner can house whatever and as much he wants on the website, i.e., content regarding the services and products in the form of infographics, images, and videos. This procedure requires all features like space, bandwidth, RAM, and processor, etc. in an adequate quantity, and dedicated servers offer all. 

 Why verification of Dedicated Web Hosting

 Why you need evidence for this examination. It's because dedicated web hosting is expensive than the other hosting. And if you have bought one, you have spent a significant revenue. Why not verify that the spent money is worth it?

 Moreover, as discussed above, the quantity of the features is sufficient. But if you are facing any problem regarding speed or space. Make sure to check if it is a technical issue, or your server is not dedicated. You might have got limited features of another hosting.

How to do the verification of a Dedicated Web Hosting?

 Other hosting types are relatively easier to find out and get affirmation. But verification of Dedicated Web Hosting is challenging. Nonetheless, some tips for testing the server are:

 ·         Examine the details of the server by connecting to the dedicated server via SSH. 

·         Use the dmidecode command to see the BIOS particulars that can tell about the virtual components if there is any.

·         Inspecting the disk can also provide information if there is any virtual component. (if yes, then it is not dedicated server)

·         Running esxtop, i.e., if the results are responded, then the server is not a dedicated server because such a server does not generate results for esxtop.

·         Also, the website's IP can be utilized to check if there is any other website that is hosting using this IP or not. If there exists any number, then it's not dedicated. This process is called reverse IP lookup.

  All you got to do is to make sure to sign up with a reliable company like Web Hosting Company first hand. So that you don't have to worried about the verification of dedicated web hosting. Even if you have conducted the confirmation of the server, you should get a satisfactory answer. However, if the reputation and credibility of the service provider are ambivalent, then corroboration is a must to do.

[tayfundeger]

New Post has been published on VMware Virtualization Blog

New Post has been published on https://www.tayfundeger.com/vcenter-server-ve-vimtop.html

vCenter Server ve vimtop

Merhaba,

vCenter Server ve vimtop isimli bu yazımda sizlere vCenter Server’in performansının nasıl inceleneceğini anlatacağım.

vCenter Server 7 ile birlikte Windows vCenter Server artık kullanılmıyor. Artık tamamen VMware’in geliştirmiş olduğu Photon OS işletim sistemine sahip Appliance ile kullanmaya devam ediyoruz. Önceden Windows üzerine kurulu vCenter Server’da perfmon veya task manager’da bulunan performance monitor üzerinden izleyebiliyorsunuz. Ancak vCenter Server 7 ile birlikte artık komple appliance kullanmaya başlayacağımız için bunun performance metric değerleri biraz daha farklı.

Ben bu yazımda sizlere vCenter Server ‘in performans değerlerini anlatacağım. Aynı şekilde ESXi’in performans değerlerini merak ediyorsanız aşağıdaki makalemi inceleyebilirsiniz.

Using Esxtop

ESXi Server’i incelerken esxtop komutunu kullanıyoruz. vCenter Server’i incelerken de vimtop komutunu kullanıyoruz. Bunun için ilk olarak vCenter Server’a SSH ile bağlanıyoruz. vCenter Server’a SSH ile bağlandıktan sonra vimtop komutunu çalıştırıyoruz.

vCenter Server ve vimtop

vCenter Server ve vimtop

vimtop komutunu ilk olarak çalıştırdığınızda karşınıza yukarıdaki gibi bir ekran gelecektir. Burada varsayılan olarak veriler her saniye yenilenir. esxtop ‘da her 2 saniyede bir veriler yenilenirken burada anlık olarak yenilenir. Eğer siz burada yenilemeyi durdurmak isterseniz p butonuna basabilirsiniz. Yenileme anlık olarak yapıldığı için isterseniz bunu değiştirebilirsiniz. İsterseniz 5 saniye aralık ile yenilenmesini sağlayabilirsiniz. Bunun için s butonuna basıp 5 rakamını girip enter’a basabilirsiniz.

Yardım menüsünü görmek için “h” düğmesine basın. Yardım menüsü vimtop’tan sütunların nasıl ekleneceğini, kaldırılacağını ve yeniden sıralanacağını açıklayacaktır. Vimtop’tan çıkmak için “q” tuşuna basın.

CPU aktivitesi asla VCSA’nız için toplam yüzde 70’ten fazla olmamalıdır.

Varsayılan ekranda hem CPU hemde Memory detaylarını görebilirsiniz. Burada isterseniz sıralamayı değiştirebilirsiniz. En çok bellek kullanan işlemleri sıralamak için geçerli olan sıralama düzenini temizlemek için z butonuna basabilirsiniz. Örneğin burada yön tuşlarını kullanarak servisleri highlight edebilrisiniz. Ben mesela yukarıdaki ekranda Memory seçeneğini highlight ettim ve d butonuna basarak en yüksek memory kullanan servise göre sıraladım. d butonuna birkere daha bastığımızda bu sefer en düşük memory tüketen servisi en yukarıda tutar. Siz burada aşağı yukarı ok tuşları ile aşağı yukarı gidebilirsiniz. c butonuna bastığınızda ise karşınıza açılan panelden daha fazla verinin izlenmesini sağlayabilirsiniz. Ekleyebileceğiniz verileri aşağıda görebilirsiniz.

Column Name Description PID Process identifier CMD Command name used to start the process as it is seen by the under CMDLINE The full command line of this process, used during startup NAME User readable name of the process5.16 THREADS Number of native threads currently running in the process %CPU Current CPU usage in percent for this process MHZ Current CPU usage in MHz for this process CPU Total CPU time used by the process during last measurement cycle SYS CPU time spent by process in the system (kernel) routines USR CPU time spent by process in the user land %MEM Physical memory usage in percent for this process MEM Physical (resident) memory used by this process VIRT Total virtual memory size of this process (the complete working set including resident and swapped memory) SHR Size of the shared code – these are any shared objects (so or DLL) loaded by the process TEXT Code segment size of the process without any shared libraries DATA Data segment size of the process (for managed process, like JVM, this includes the managed code also) FD Total number of file descriptors opened by the process FILS Number of all file objects opened by the process (sum of files, directories and links) FILE Number of regular files currently opened by the process DIR Number of directories currently opened by the process LNK Number of symbolic links currently opened by the process DEVS Number of devices (char or block) opened by the process CHAR Number of descriptors opened to character devices BLCK Number of descriptors opened to block devices CHNS Number of all communication channels opened by the process (eithe sockets or FIFOs) SCKS Number of sockets (TCP, UDP, raw) currently opened by the process FIFO Pipes (named or not) opened by the process

k butonua bastığınızda vCenter Server üzerinde yer alan disklerin okuma yazma oranlarının detaylarını görebiliriniz. Burada yine yön veyukrı aşağı ok tuşlarını kullanarak diskleri highlight edebilirsiniz. d butonuna bastığınızda en fazla okuma yazma yapan diski en yukarıya alabilir veya en aşağıya alabilirsiniz.

Isterseniz burada c butonuna basarak daha fazla parametreyi izleyebilirsiniz.

Column Name Description DISK/PART Storage disk identifier / Disk partition identifier IOS Number of I/O operations currently in progress on this partition (should go to zero) IOTIME Milliseconds spent doing I/O operations on this partition (increases or a nonzero number of I/O operations) LAT Partition access latency (in milliseconds) calculated using the total amount of time spend doing I/O divided by the total amount of I/O oprations, done during last measurement interval / Disk access latency (in milliseconds) calculated using the total amount of time spend doing I/O divided by the total amount of I/O operations, done during last measurement interval READS Number of reads issued to this partition and completed successfully during last measurement interval RDMRG Adjacent to each other reads on this partition, merged for efficiency / Adjacent to each other reads on this, merged for efficiency READ Number of reads per second issued to this partition / Number reads per second issued to this disk RDSCTRS Number of sectors read successfully from this partition during last measurement interval / Number of sectors read successfully from this disk during last measurement interval WRITES Number of writes issued to this partition and completed successfully during last measurement interval / Number of writes issued to this disk and completed successfully during last measurement interval WRMRG Adjacent to each other writes on this partition, merged for efficiency / Adjacent to each other writes on this disk, merged for efficiency WRITE Number of writes per second issued to this partition / Number of writes per second issued to this disk WRSCTRS Number of sectors wrote successfully to this partition during last measurement interval / Number of sectors wrote successfully to this disk during last measurement interval

o butonuna bastığınızda vCenter Server’in network kartlarını ve bunların detaylarını görebilirsiniz. Burada RXRATE ve TXRATE bölümünden inbound – outbound network trafiğinin detayını görebilirsiniz.

Yine bu ekranda da c butonuna bastığınızda farklı değerleri ekleyebilir ve izleyebilirsiniz.

Column Name Description TRGPT Total throughput of this interface (Rx + Tx) in kilobytes RATE The activity of this network interface in kBps RXED Amount of data (in kilobytes) received during last measurement interval RXRATE Rate of received data through this interface in kBps TXED Amount of data (in kilobytes) transmitted during last measurement interval TXRATE Rate of data transmission through this interface in kBps RXMCAST Number of multicast packets received on this interface during last measurement interval RXDROP Number of data rx-packets dropped during last measurement interval TXDROP Number of data packets dropped upon transmission during last measurement interval DROPPED Number of dropped packets through this network interface because of running out of buffers during last measurement cycle ERRS Total number of faults (Tx and Rx) on this interface rface RXERRS The sum of receive errors, rx-fifo errors and rx-frame errors TXERRS The sum of transmit errors, tx-fifo errors and carrier errors FIFOERRS FIFO overrun errors on this interface caused by host being busy to serve the NIC hardware CLLSNS Collisions detected on the transmission medium

Dikkat ettiyseniz vimtop’u esxtop makalesi kadar geniş anlatmadım çünkü bu bölümü aktif olarak kullanacağınızı düşünmüyorum. vCenter Server ile birlikte gelen Photon OS zaten çok performanslı çalışan bir işletim sistemi. Bundan dolayı işletim sistemi kaynaklı ciddi performans problemleri veya sorunlar yaşamazsınız. Ancak altyapınızdan kaynaklı bir darboğaz veya sıkıntı var ise ozaman yapacak bir şey maalesef bulunmuyor:)

vimtop ile vCenter Server üzerindeki performans verilerini izleyebilir bunları isterseniz yorumlayabilirsiniz. vCenter Server ve vimtop isimli makalemde anlatacaklarım bu kadar:)

Umarım faydalı olmuştur.

İyi çalışmalar.