It's been a week now that connections to my server are slow. I can transfer one file of 6 GB at 50 MB/s but with a folder of the same size with multiple files I go down to 4 MB/s. Also, browsing a folder with multiple files takes a lot more time for the files to show. The only thing I've noticed to change since that moment is one of my drives started blinking at a different pace, it's lit when all the others are not, like it's not in sequence.
I'm kind of new with server maintenance and haven't been part of the initial setup, so I may be missing things who would be obvious to most sys admins, sorry in advance. Any help is appreciated! Thank you!
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Code tags for code, please.
Last edited by Corona688; 05-22-2014 at 12:56 PM..
Hi,
Since last week our server become too slow when we try to run application on it. When we run top command, it show as below:
So it's nothing to do with heavy utilization, right? Can you give some opinion on what actually had happended?
Thank you very much... :b: (4 Replies)
I have data file with customer.dat, and this contains the customer names
>cat customer.dat
FirstName1 LastName1
FistName2 LastName1
FistName3 MiddleName3 LastName3
This file can contain areoun 100 customer names.
Regards, (1 Reply)
Hi,
I have an excel file that have a random count of columns/fields and what im trying to do is to only retrieve all the rows under 2 specific field headers.
I can use the usually command for awk which is awk 'print{ $1 $2}' > output.txt, but the location of the 2 specific field headers is... (9 Replies)
Hello,
I am using Redhat redhat 4 update 4 kernal 2.6. My server is some time suddenly running slow.
The averge cpu load goes up to 50 to 60. (There is only two CPU and usually, the averge load
is between 1 to 2.5) That time, i see, there are several sessions connected.
Normally, we have... (5 Replies)
I need to find all the files that have group Read or Write permission or files that have user write permission.
This is what I have so far:
find . -exec ls -l {} \; | awk '/-...rw..w./ {print $1 " " $3 " " $4 " " $9}'
It shows me all files where group read = true, group write = true... (5 Replies)
Hi,
We have smb client running on two of the linux boxes and smb server on another linux system. During a backup operation which uses smb, read of a file was allowed while write to the same file was going on.Also simultaneous writes to the same file were allowed.Following are the settings in the... (1 Reply)
Dear All,
I have a hard disk in solaris on which the write performanc is too slow.
The CPU , RAM memory are absolutely fine.
What might be reason.
Kindly explain.
Rj (9 Replies)
There is a big problem with the server (VPS based on OpenVZ, CentOS 5, 3GB RAM). The problem is the following. The first 15-20 minutes after starting the server is operating normally, the load average is less than or about 1.0, but then begins to increase sharply% wa, then hovers around 95-99%.... (2 Replies)
Discussion started by: draiphod
2 Replies
LEARN ABOUT PLAN9
cfs
CFS(4) Kernel Interfaces Manual CFS(4)NAME
cfs - cache file system
SYNOPSIS
cfs -s [-rd] [-f partition]
cfs -a netaddr [-rd] [-f partition] [mtpt]
DESCRIPTION
Cfs is a user-level file server that caches information about remote files onto a local disk. It is normally started by the kernel at boot
time, though users may start it manually. Cfs is interposed between the kernel and a network connection to a remote file server to improve
the efficiency of access across slow network connections such as modem lines. On each open of a file cfs checks the consistency of cached
information and discards any old information for that file.
Cfs mounts onto mtpt (default /) after connecting to the file server.
The options are:
s the connection to the remote file server is on file descriptors 0 and 1.
a netaddr
dial the destination netaddr to connect to a remote file server.
r reformat the cache disk partition.
d turn on debugging
f partition
use file partition as the cache disk partition.
All 9P messages except read, clone, and walk (see intro(5)) are passed through cfs unchanged to the remote server. A clone followed imme-
diately by a walk is converted into a clwalk. If possible, a read is satisfied by cached data. Otherwise, the file server is queried for
any missing data.
FILES
/dev/hd0cache
Default file used for storing cached data.
SOURCE
/sys/src/cmd/cfs
CFS(4)
05-22-2014
