troubleshooting slow disk writes on squeeze.
Hi,
I have a squeeze server
Linux rv1 2.6.32-5-amd64 #1 SMP Fri Oct 15 00:56:30 UTC 2010 x86_64 GNU/Linux
It has a lot of free RAM and the processors also don't have much work load
# free -m
total used free shared buffers cached
Mem: 3956 2778 1178 0 0 1448
-/+ buffers/cache: 1329 2627
Swap: 9538 0 9538
top - 17:41:14 up 6:35, 1 user, load average: 0.40, 0.91, 0.63
Tasks: 197 total, 1 running, 196 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 0.0%sy, 0.0%ni, 99.0%id, 0.7%wa, 0.0%hi, 0.3%si, 0.0%st
Cpu1 : 0.0%us, 0.0%sy, 0.3%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 0.3%us, 0.3%sy, 0.0%ni, 96.7%id, 2.3%wa, 0.3%hi, 0.0%si, 0.0%st
Cpu3 : 0.0%us, 0.3%sy, 0.3%ni, 96.3%id, 2.7%wa, 0.0%hi, 0.3%si, 0.0%st
Mem: 4051952k total, 2824744k used, 1227208k free, 528k buffers
Swap: 9767416k total, 28k used, 9767388k free, 1484668k cached
I have samba installed.
ii samba 2:3.5.5~dfsg-1
SMB/CIFS file, print, and login server for Unix
ii samba-common 2:3.5.5~dfsg-1
common files used by both the Samba server and client
ii samba-common-bin 2:3.5.5~dfsg-1
common files used by both the Samba server and client
and have a few shares.
Recently Saving/Copying files from Windows Clients to the Samba server
has become slow at times.
The system waits during these times for a long time even while
performing operations using ssh such as
#aptitude update
I ran test for the hard drives and they are fine
# smartctl -l selftest /dev/sda
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining
LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 1226 -
# smartctl -l selftest /dev/sdb
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining
LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 1191 -
What else can I do to trouble shoot this problem?
thanks :-)
--Siju
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