comcast speed test slow

be detected with ctrl+end). 5, the network transmission speed is slow, the local area network transmission speed is low. 6. Many inefficient functions such as countif, SUMIF and VLOOKUP are used in the worksheets. Conclusion: Because the file capacity is too large, and the external link data is numerous, every time the file is opened, Excel reads the file int

1, we first want to see the U Disk File system is Which? Turn on the computer-removable disk-right-click the property. 2, currently playing most u disk is FAT32 format, which is the majority of USB2.0 boat speed is slower reasons. We first use the file size to test the speed of its read and write, Lattice here is a roughly 400 trillion files, in order to let eve

A problem that bothers me for a long time is basically solved at 8:41 today.The data volume of the database is very large, the query speed is very slow, after indexing "=" search speed problem resolution, but in the search of the SQL statements are mostly used like, but like '%xxx% ' is not using the index, and as the "XXX%" is indexed, for advice once the teache

HP hp5200 printing speed is very slow, LaserJet 5200 with USB cable Connection printing file slow 1. Click the computer's "start"----Control Panel----printer and fax----Find the printer's icon, right-click the property, open the Properties dialog box, select the port, check the driver selected port: Figure 1 2. Mouse right click on my Computer, open

Original link: http://tieba.baidu.com/p/4737599703 "invasion and deletion"Always thought that it is the domain name resolution problem, but also do not feel like. Today in Baidu search "ubuntu16.04 Domain name resolution slow" when inadvertently saw thehttp://blog.csdn.net/ferrarifomaul/article/details/51544634 this blog link, the topic is "Ubuntu 16.04 LTS Connection Wireless Internet slow solution", just

most authoritative ultimate tutorial on Connecting Virtual Disks-ten years of experience with Internet cafes (completed in May 27 !)Http://bbs.icafe8.com/viewthread.php? Tid = 58821 If the speed is slow, you can troubleshoot in the following directions:1. Check whether the server's cache is too small. You can increase the cache size to test the cache size. If yo

How to speed up itunes? Question: itunes download application is very slow, what is the way to improve speed? Answer: Open the Pen group test ping value software--pinginfoview. Open the main screen click the "OK" button in the pop-up window Pick the IP address with the shortest response time

1.BIOS self-test After the completion of the IDE, the speed is very slow, almost 20 seconds (hook up two hard drives, BIOS configuration of the IDE automatic monitoring). 2.IDE after monitoring, clear screen, the next step is the Windows splash screen, here again for almost 20 seconds. In this way, it takes nearly 3 minutes for the system to boot up. I wonder,

U disk for our daily life is a very important thing, help us save important files, is also a good transmission work, when the need to transfer files, we can copy the file to a U disk, and then copy to another computer, so the U disk for our life is vital. But now sometimes we often encounter some small difficulties, that is, when copying files to a U disk, the speed of replication is very slow, especially w

R Slow has been criticized, recently done a larger dataset analysis, ran too slow, found that the crux is R Data frame index too slow:The following tests are:Gene_list = 1:100000= matrix (nrow = Length (gene_list), Ncol = 7= As.data.frame (Matrix (nrow = Length (gen e_list), Ncol = 7=return(1:7)# test eqtlsystem.time ( return (Try_func () )))# # User Sy

first class load. To verify this speculation, I put the newbuilder call into a loop, looking at the time of each loop, and the result is the same as the conjecture, except for the first scare, which is basically 0 at the millisecond level.With this validation, we continue to demonstrate that the builder's load is placed outside the entire test, and then tested in a class.forname way, which is more clear, the first Newbuilder only used about 5ms, the

FiddlerFree Software. The simulated network speed function is relatively simple (rules --> Performance --> simulate modem speed). You can select the setting and switch instantly. There are few options. fiddler only slows down the bandwidth and does not introduce packet loss (the subsequent network delay simulator adds the packet loss simulation ). In addition, the waterfall chart of the

Excerpt from: http://www.centoscn.com/CentosBug/osbug/2014/0614/3138.htmlI used CentOS, but found that the speed is almost impossible to access the Internet, even Baidu can not open, but win is fast. Later think of accidentally remember once saw a paragraph, said to close IPv6, test come, really effective, close to IPv6 open speed fast. Close method:1 vi/etc/modp

Web Speed-up: Avoid PHP session slow running One, what--concurrent access, blocking execution1.1 Do not use session File index.php: The contents of ajax.php, ajax2.php and ajax3.php are Every request to sleep 1S,JQ Ajax requests is asynchronous, which means that the three requests are essentially simultaneous, and ideally the browser waits for all 1s,3 interfaces to return.

First, optimize the computer with the optimization master, open Optimization master-System optimization-boot speed optimization-start dwell time, select "Direct Access".Second, dust, clean up the disk and defragment the disk.1, open the chassis dust, all the connections are plugged in firmly.2. In My Computer window, right-click the drive letter you want to clean-"properties"-"clean disk"-tick the file you want to delete-ok-yes.3. Clean up the registr

Symptom descriptionA certain Bureau adopts the MA5200 + 2403F networking mode. Due to the small amount of upstream optical resources, the 2403F cascade mode is adopted in the residential area, and the cascade mode adopts five category of twisted pair wires, you can use PPPOE to access the Internet. Some second-level switch users report that the Internet access speed is slow.Alarm informationThere are many CRC verification errors on the upstream port o

Workaround: 1. Use plug-in "Useso take over Google", the plugin is mainly used to replace Google fonts in WordPress service; 2.Using plug-ins: W3 total cache plugin; The plugin is very useful for setting up caching and controlling the database performance of websites to improve the speed of website loading.3. Using the plugin tinypng, the plugin is mainly used to compress pictures and compress the pictures in the website.In addition, some of the site'

Modifying the Registry improves the slow network speed caused by Tcp latency in Windows. TCP is a link-oriented communication protocol. Each sending and receiving action of both parties must be based on the normal communication link. Therefore, TCP provides the default ACK authentication mechanism. The ACK authentication method is related to the operating system. In TCP, data validation is often delayed. Wh

The machine is a dual system, respectively Windows XP and CentOS-5.3, the problem is that in Windows network speed is very fast, and then switch to Linux network speed becomes snail crawling as slow, endure for some days. I tried to reinstall the NIC Driver in Linux. The effect is zero and the problem persists. The root cause of the problem is that DNS resolution

= CephxFilestore_xattr_use_omap = TrueOsd_pool_default_size = 2Osd_pool_default_min_size = 1Osd_pool_default_pg_num = 128Osd_pool_default_pgp_num = 128Filestore_fd_cache_size = 204800Filestore_omap_header_cache_size = 204800Filestore_fiemap = TrueFilestore_wbthrottle_xfs_bytes_start_flusher = 500000000Filestore_wbthrottle_xfs_indoes_start_flusher = 500Filestore_wbthrottle_xfs_indoes_hard_limit = 500000Filestore_wbthrottle_xfs_ios_start_flusher = 50000Filestore_wbthrottle_xfs_bytes_hard_limit =