What Can I Do To Improve Bandwidth / Uplink Speed Of Server

Oct 4, 2008

As per topic, what is the best method to do to the hardware to improve bandwidth / uplink speed of server?

I have a production server that is used for regular file serving.

P4 3.0Ghz
500GB + 160GB + 160GB hard disk
2Mbps Dedicated + 10Mbps shared.

However, the most I can pulled through the whole server is always between 1.5Mbps - 3Mbps, anyway to pull the speed up to around 10Mbps should there be availability of bandwidth for me to burst?

For any informations, the hard disk is SATA 2.

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Recently we ordered a few servers with soft raid1, but seems the soft raid doesn't perform well, copy a 1G file, it takes about 40 seconds.

also sometimes it takes very very long time, I haven't count it, at least a few minutes, just like the server is dead.

I have run this command.
dd if=/dev/zero of=test.bin bs=1000M count=1
1+0 records in
1+0 records out
1048576000 bytes (1.0 GB) copied, 1.14416 seconds, 916 MB/s

But obviously it takes more more than 1 second, why it shows only takes 1 second?

I'm using two ST31000528AS hard disks.

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I recently purchased a new Dedi server, and got 100 MBPS Uplink. Now, I'm uploading 16GB size of files into this server, and I have a suspicious feeling that this upload speed is not what they told me. For the very 1st day, I opened a ticket and they said that they upgraded it to 100 mbps. I saw this speed was faster immediately. On 2nd day, it went down to around same slow speed before. Since then, I kept opening a new ticket and they said it was done, or sometimes I am under DDos attack..? What? I don't even have the site up yet! How come there is DDos attack?

Anyway, today I was told that I'm getting billed for this 100 mbps uplink, because it's a new service. What a crazy thing going on here... I am so tired of this ticket game and just don't understand why they don't commit what they told me initially.

Can anyone please tell me how I can verify and prove that I am having this 100 MBPS Uplink speed? The only thing I can tell with my eyes is that I can see those FTP upload progress bar. When it's very fast to upload one file, I assume that I have right speed.

But is there any tool or command that I can execute on the server shell, and tell them what I get as a proof?

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I wonder whatLs more important on a shoutcast server, to get more bandwidth per month as possible, or a faster port connection?

I have test a 2 hours music stream at 128k bit rate and was only 5MB per listener !
This is not to host 24/7 radios. Its a project to host DJs /Live Bands at
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Also each event between 50-80 listeners, and not at same days or hours.

About the port connection, what this means? :

Is it shared and from 10 to 100mbps?

I am trying to find the best deal with dedi servers.
Have at this moment a unlimited bandwidth /100Mbps shared, but it seems the CPU is too low (AMD Sempron 3100), as I canLt seem to create more than 40 shoutcast accounts (and no client is streaming, just ON), and the server load goes up to 4.5 !!

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What is VT anyways? I only know that Xen requires it if you wish to host a Windows Virtual Machine on a Xen Linux Server.

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Also, I'm currently paying $1 for GB of transfer. How much does it usually costs?

Since my hosting company sets php_safe off, I'm considering changing it.Can you guys recommend me a hosting plan that has:

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Aug 16, 2007

I have a Cisco 4006 with a 4013 Supervisor and a 4232-L3 and 3 x 4148-RJ modules.

When downloading data from ServerA on the switch to ServerB on
the switch the download speed is limited to about 650KB/sec.

ServerA -> ServerB = 650KB/sec.

ServerB -> ServerA = 11MB/sec.

So the problem is in one direction.

Each server has its own VLAN and a /29 IP block and both servers are physically connected to the 4006's 4148-RJ modules.

This seems to affect servers at random.

This issue disappears if I change the /29 IP block on the server experiencing the slow downloads while still using the same VLANs and ports to a /29 not experiencing this issue.

When I change the /29 to one that is not affected the switch is capable of full wire speed which is approximately 11MB/sec sustained. When I change back to the old /29 the downloads are limited to about 650KB/sec max.

I have tried the following:

changing VLANs

changing ports on the 4006

replaced CAT5 patch cords

replaced NICs in affected servers

replaced motherboards in affected servers

had multiple people examine the configs

and a few other crazy ideas yet the problem persists.

This problem affects only a few servers on the switch however I have a similar problem on a larger group of servers as well.

Several servers are limited to 650KB/sec downloads from very fast servers outside the network on the public internet.

For example:

LocalServerA on the 4006 with a /29 is downloading from RemoteServerA on the internet and is getting about 650KB/sec.

RemoteServerA -> RemoteServerA = 650KB/sec

LocalServerB on the 4006 with another /29 is downloading from RemoteServerA on the internet and is getting 3-8MB/sec sustained.

RemoteServerA -> LocalServerB = 3-8MB/sec

If I change the /29 on LocalServerA to a /29 which is unaffected by this issue the speed problem disappears while still using the same hardware, VLANs and physical ports.

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What I've got running:

Apache2, PHP5, MySQL5, Dovecot, Postfix

One of the sites is a growing forum with a MASSIVE photo album. This is the site where I notice the most slowness.

Changing the server software is not an option - Only optimization.


Originally Posted by httpd.conf

ServerTokens OS
ServerRoot "/etc/httpd"
PidFile run/httpd.pid
Timeout 300
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 5
<IfModule prefork.c>
StartServers 8
MinSpareServers 8
MaxSpareServers 13
ServerLimit 256
MaxClients 256
MaxRequestsPerChild 50
<IfModule worker.c>
StartServers 2
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
Listen 80
LoadModule auth_basic_module modules/mod_auth_basic.so
LoadModule auth_digest_module modules/mod_auth_digest.so
LoadModule authn_file_module modules/mod_authn_file.so
LoadModule authn_alias_module modules/mod_authn_alias.so
LoadModule authn_anon_module modules/mod_authn_anon.so
LoadModule authn_dbm_module modules/mod_authn_dbm.so
LoadModule authn_default_module modules/mod_authn_default.so
LoadModule authz_host_module modules/mod_authz_host.so
LoadModule authz_user_module modules/mod_authz_user.so
LoadModule authz_owner_module modules/mod_authz_owner.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
LoadModule authz_dbm_module modules/mod_authz_dbm.so
LoadModule authz_default_module modules/mod_authz_default.so
LoadModule ldap_module modules/mod_ldap.so
LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
LoadModule include_module modules/mod_include.so
LoadModule log_config_module modules/mod_log_config.so
LoadModule logio_module modules/mod_logio.so
LoadModule env_module modules/mod_env.so
LoadModule ext_filter_module modules/mod_ext_filter.so
LoadModule mime_magic_module modules/mod_mime_magic.so
LoadModule expires_module modules/mod_expires.so
LoadModule deflate_module modules/mod_deflate.so
LoadModule headers_module modules/mod_headers.so
LoadModule usertrack_module modules/mod_usertrack.so
LoadModule setenvif_module modules/mod_setenvif.so
LoadModule mime_module modules/mod_mime.so
LoadModule dav_module modules/mod_dav.so
LoadModule status_module modules/mod_status.so
LoadModule autoindex_module modules/mod_autoindex.so
LoadModule info_module modules/mod_info.so
LoadModule dav_fs_module modules/mod_dav_fs.so
LoadModule vhost_alias_module modules/mod_vhost_alias.so
LoadModule negotiation_module modules/mod_negotiation.so
LoadModule dir_module modules/mod_dir.so
LoadModule actions_module modules/mod_actions.so
LoadModule speling_module modules/mod_speling.so
LoadModule userdir_module modules/mod_userdir.so
LoadModule alias_module modules/mod_alias.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
LoadModule cache_module modules/mod_cache.so
LoadModule suexec_module modules/mod_suexec.so
LoadModule disk_cache_module modules/mod_disk_cache.so
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Include conf.d/*.conf
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Originally Posted by my.cnf

# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).



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